noip前打板子 qwq
在某咕上打了一晚上的模板
感觉还好。。。
#include<bits/stdc++.h> #define LL long long using namespace std; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } int n; priority_queue<int> q; int main() { n = read(); while(n--) { int opt = read(); if(opt == 1)q.push(-read()); else if(opt == 2)printf("%d\n",-q.top()); else q.pop(); } }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define LL long long using namespace std; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } const int maxn = 15010; int n,m; int first[maxn],to[maxn],nx[maxn],val[maxn],cnt; int inq[maxn],dis[maxn],cq[maxn],vis[maxn]; int spfa(int s) { memset(inq,0,sizeof(inq)); memset(cq,0,sizeof(cq)); memset(dis,127,sizeof(dis)); queue<int> q; dis[s] = 0;q.push(s); cq[s] = 1; while(!q.empty()) { int now = q.front();q.pop(); inq[now] = 0; for(int i=first[now];i;i=nx[i]) { if(dis[to[i]] > dis[now] + val[i]) { dis[to[i]] = dis[now] + val[i]; cq[to[i]] = cq[now] + 1; if(cq[to[i]] > n)return 1; if(!inq[to[i]]) { inq[to[i]] = 1; q.push(to[i]); } } } }return 0; } int main() { //freopen("testdata.in","r",stdin); // freopen("testdata.ans","w",stdout); int T = read(); while(T--) { n = read(),m = read(); cnt = 0;memset(first,0,sizeof(first)); for(int i=1;i<=m;i++) { int u = read(),v = read(),w = read(); to[++cnt] = v,nx[cnt] = first[u],first[u] = cnt,val[cnt] = w; if(w >= 0)to[++cnt] = u,nx[cnt] = first[v],first[v] = cnt,val[cnt] = w; } if(spfa(1))cout<<"YE5\n"; else cout<<"N0\n"; } }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define LL long long using namespace std; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } const int maxn = 100010; int n,m; int f[maxn][23],lg[maxn]; int main() { n = read(),m = read(); lg[0] = -1; for(int i=1;i<=n;i++)f[i][0] = read(),lg[i] = lg[i >> 1] + 1; for(int j=1;j<=22;j++) for(int i=1;i+(1 << j) - 1 <= n;i++) f[i][j] = max(f[i][j - 1],f[i + (1 << (j - 1))][j - 1]); while(m--) { int l = read(),r = read(); printf("%d\n",max(f[l][lg[r - l + 1]],f[r - (1 << lg[r - l + 1]) + 1][lg[r - l + 1]])); } }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define int long long using namespace std; const int maxn = 500010,mod = 998244353,M = 499122177,G = 3; int n,L,num,R[maxn],a[maxn],b[maxn],c[maxn],d[maxn]; int poly[maxn],inv[maxn]; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } inline int ksm(int x,int t) { int res = 1; while(t) { if(t & 1) res = 1LL * res * x % mod; x = 1LL * x * x % mod; t >>= 1; } return res; } inline void NTT(int *a,int f,int n,int L) { for(int i=0;i<n;i++) R[i] = (R[i>>1] >> 1) | ((i & 1) << (L - 1)); for(int i=0;i<n;i++)if(i < R[i])swap(a[i],a[R[i]]); for(int i=1;i<n;i<<=1) { int wn = ksm(G,(mod - 1) / (i << 1)); if(f == -1)wn = ksm(wn,mod - 2); for(int j=0;j<n;j+=(i<<1)) { int w = 1; for(int k=0;k<i;k++,w=1LL * w * wn % mod) { int x = a[j + k], y = 1LL * w * a[j + k + i ] % mod; a[j + k] = ((x + y) % mod + mod) % mod; a[j + k + i] = ((x - y) % mod + mod) % mod; } } } if(f == -1) { int inv = ksm(n,mod - 2); for(int i=0;i<n;i++)a[i] = 1LL * a[i] * inv % mod; } } inline void inverse(int *a,int *b,int n,int L) { if(n == 1){b[0] = ksm(a[0],mod - 2);return;} inverse(a,b,n>>1,L-1); memcpy(c,a,n*sizeof(int));memset(c+n,0,n*sizeof(int)); NTT(c,1,n<<1,L+1);NTT(b,1,n<<1,L+1); for(int i=0;i<(n<<1);i++) b[i] = 1LL * b[i] * ((2 - 1LL * c[i] * b[i] % mod + mod) % mod) % mod; NTT(b,-1,n<<1,L+1);memset(b+n,0,n*sizeof(int)); } inline void sqrt(int *a,int *b,int n,int L) { if(n == 1){b[0] = 1;return;} sqrt(a,b,n>>1,L-1);memset(d,0,n*2*sizeof(int));inverse(b,d,n,L); memcpy(c,a,n*sizeof(int));memset(c+n,0,n*sizeof(int)); NTT(c,1,n<<1,L+1);NTT(b,1,n<<1,L+1);NTT(d,1,n<<1,L+1); for(int i=0;i<n<<1;i++) b[i] = (1LL * c[i] * d[i] % mod + b[i]) %mod * M % mod; NTT(b,-1,n<<1,L+1);memset(b+n,0,n*sizeof(int)); } signed main() { n = read(); for(int i=1;i<n;i++)poly[i] = read(); int m; for(m=n,n=1;n<=m;n<<=1) L++; for(int i=1;i<n;i++)poly[i] = mod - poly[i]; (poly[0] += 1) %= mod; inverse(poly,inv,n,L); for(int i=0;i<m;i++)printf("%lld ",inv[i]); }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define int long long using namespace std; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } const int maxn = 3e6 + 10; int n,p; int inv[maxn]; inline int inverse(int x) { int res = 1,t = p - 2; while(t) { if(t & 1)res = res * x % p; x = x * x % p; t = t >> 1; } return res; } signed main() { n = read(),p = read();puts("1");inv[1] = 1; for(int i=2;i<=n;i++) { printf("%d\n",(inv[i] = ((p - p / i) * inv[p % i]) % p)); //printf("%d\n",inverse(i)); } }
// luogu-judger-enable-o2 // luogu-judger-enable-o2 #include<bits/stdc++.h> #pragma GCC optimize("O3") #define LL long long using namespace std;namespace IO { const int iL = 1<<18; char _buf[iL],*S,*T; #define gc (S==T?(T=(S=_buf)+fread(_buf,1,iL,stdin),S==T?0:*S++):*S++) template<class _Tp> inline void gi(_Tp&x){ x=0;int f=1;char ch=gc;while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=gc;} while(ch>='0'&&ch<='9')x=x*10+(ch^48),ch=gc;x*=f; } char _o[25],*__o; template<class _Tp> inline void oi(_Tp x,char _y=0){ if(x==0){putchar('0');if(_y)putchar(_y);} else { if(x<0) putchar('-'), x=-x; __o = _o+24; if(_y) *--__o = _y; while(x) *--__o = x%10+48, x/=10; fwrite(__o,1,_o+24-__o,stdout); } } inline char getc(){char ch;while((ch=gc)!='A'&&ch!='C');return ch;} } ; const int maxn = 1e6 + 10; int n,k; char s[maxn]; namespace Suffix_Array { #define equ(x) (y[sa[i] + x] == y[sa[i - 1] + x]) int rnk[maxn],tmp[maxn],sa[maxn],hei[maxn]; int *x,*y; int wa[maxn],wb[maxn],wc[maxn]; void radix_sort(int m) { memset(wc+1,0,sizeof(int)*m); for(int i=1;i<=n;++i)++wc[x[y[i]]]; for(int i=1;i<=m;++i)wc[i] += wc[i - 1]; for(int i=n;i>=1;--i)sa[wc[x[y[i]]]--] = y[i]; } void makesa(char *s,int n,int m) { x = wa,y = wb; for(int i=1;i<=n;++i)x[i] = s[i],y[i] = i;radix_sort(m); for(int j=1,p=0;j<=n;j<<=1,m = p,p = 0) { for(int i=n-j+1;i<=n;++i)y[++p] = i; for(int i=1;i<=n;++i) if(sa[i] > j)y[++p] = sa[i] - j; radix_sort(m);swap(x,y);x[sa[p = 1]] = 1; for(int i=2;i<=n;++i)x[sa[i]] = equ(0) && equ(j) ? p : ++p; if(p == n)break; } } } using namespace Suffix_Array; int main() { fgets(s + 1,1 << 20,stdin); n = strlen(s + 1); makesa(s,n,122); for(int i=1;i<=n;++i)IO::oi(sa[i],' '); }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define int long long using namespace std; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } const int maxn = 100010; int n,m,mod; int a[maxn]; #define ls (x << 1) #define rs ((x << 1) | 1) int seg[maxn << 2],mutag[maxn << 2],adtag[maxn << 2]; inline void pushup(int x){seg[x] = (seg[ls] + seg[rs]) % mod;} inline void build(int x,int l,int r) { mutag[x] = 1,adtag[x] = 0; if(l == r) { seg[x] = a[l]; return; } int mid = (l + r) >> 1; build(ls,l,mid);build(rs,mid + 1,r); pushup(x); } inline void pushdown(int x,int l,int r) { if(mutag[x] != 1) { (mutag[ls] *= mutag[x]) %= mod;(mutag[rs] *= mutag[x]) %= mod; (adtag[ls] *= mutag[x]) %= mod;(adtag[rs] *= mutag[x]) %= mod; (seg[ls] *= mutag[x]) %= mod;(seg[rs] *= mutag[x]) %= mod; mutag[x] = 1; } if(adtag[x]) { int mid = (l + r) >> 1; (adtag[ls] += adtag[x]) %= mod;(adtag[rs] += adtag[x]) %= mod; (seg[ls] += (mid - l + 1) * adtag[x]) %= mod; (seg[rs] += (r - mid) * adtag[x]) %= mod; adtag[x] = 0; } } inline void modify(int x,int l,int r,int L,int R,int v,int type) { if(L <= l && r <= R) { if(type == 2) { (seg[x] += (r - l + 1) * v) %= mod; (adtag[x] += v) %= mod; } if(type == 1) { (seg[x] *= v) %= mod; (adtag[x] *= v) %= mod; (mutag[x] *= v) %= mod; } return; } int mid = (l + r) >> 1; pushdown(x,l,r); if(L <= mid)modify(ls,l,mid,L,R,v,type); if(R > mid)modify(rs,mid + 1,r,L,R,v,type); pushup(x); } inline int query(int x,int l,int r,int L,int R) { if(L <= l && r <= R)return seg[x]; int mid = (l + r) >> 1,ans = 0; pushdown(x,l,r); if(L <= mid)(ans += query(ls,l,mid,L,R)) %= mod; if(R > mid)(ans += query(rs,mid + 1,r,L,R)) %= mod; return ans; } signed main() { n = read(),m = read(),mod = read(); for(int i=1;i<=n;i++)a[i] = read(); build(1,1,n); while(m--) { int op = read(),l = read(),r = read(); if(op == 1)modify(1,1,n,l,r,read(),op); else if(op == 2)modify(1,1,n,l,r,read(),op); else printf("%lld\n",query(1,1,n,l,r)); } }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define int long long using namespace std; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } const int maxn = 100010; int n,m; int a[maxn]; struct Graph { int first[maxn],to[maxn << 1],nx[maxn << 1],cnt; inline void add(int u,int v) { to[++cnt] = v; nx[cnt] = first[u]; first[u] = cnt; } }G1,G2; int dfn[maxn],low[maxn],stk[maxn],top,vis[maxn],bl[maxn],scc,size[maxn],_tim; int ind[maxn],sum[maxn]; inline void Tarjan(int x) { dfn[x] = low[x] = ++_tim;stk[++top] = x;vis[x] = 1; for(int i=G1.first[x];i;i=G1.nx[i]) { int v = G1.to[i]; if(!dfn[v]) { Tarjan(v); low[x] = min(low[x],low[v]); } else if(vis[v])low[x] = min(low[x],dfn[v]); } if(dfn[x] == low[x]) { int now = 0;scc++; while(now != x) { now = stk[top--]; vis[now] = 0; bl[now] = scc; size[scc]++; sum[scc] += a[now]; } } } inline void rebuild() { for(int j=1;j<=n;j++) for(int i=G1.first[j];i;i=G1.nx[i]) if(bl[j] != bl[G1.to[i]]) { ind[bl[G1.to[i]]]++; G2.add(bl[j],bl[G1.to[i]]); } } int dp[maxn]; inline int dfs() { queue<int> q; for(int i=1;i<=scc;i++) if(ind[i] == 0) { q.push(i); dp[i] = sum[i]; } while(!q.empty()) { int now = q.front();q.pop(); for(int i=G2.first[now];i;i=G2.nx[i]) { int v = G2.to[i]; dp[v] = max(dp[v],dp[now] + sum[v]); ind[v]--; if(ind[v] == 0)q.push(v); } } int ans = 0; for(int i=1;i<=scc;i++)ans = max(ans,dp[i]); return ans; } signed main() { n = read(),m = read(); for(int i=1;i<=n;i++)a[i] = read(); for(int i=1;i<=m;i++) { int u = read(),v = read(); G1.add(u,v); } for(int i=1;i<=n;i++) if(!dfn[i])Tarjan(i); rebuild(); cout<<dfs(); }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define LL long long using namespace std; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } const int maxn = 100010; int n,m; int first[maxn],to[maxn << 1],nx[maxn << 1],cnt; inline void add(int u,int v) { to[++cnt] = v; nx[cnt] = first[u]; first[u] = cnt; } int dfn[maxn],low[maxn],_tim; int isc[maxn]; inline void Tarjan(int x,int fa) { dfn[x] = low[x] = ++_tim; int ch = 0; for(int i=first[x];i;i=nx[i]) { int v = to[i]; if(!dfn[v]) { Tarjan(v,x); low[x] = min(low[x],low[v]); if(low[v] >= dfn[x] && x != fa)isc[x] = 1; if(x == fa)++ch; } else low[x] = min(low[x],dfn[v]); } if(x == fa && ch >= 2)isc[x] = 1; } signed main() { n = read(),m = read(); for(int i=1;i<=m;i++) { int u = read(),v = read(); add(u,v);add(v,u); } for(int i=1;i<=n;i++) if(!dfn[i])Tarjan(i,i); int ToT = 0; for(int i=1;i<=n;i++)if(isc[i])ToT++; cout<<ToT<<endl; for(int i=1;i<=n;i++)if(isc[i])cout<<i<<" "; }
// luogu-judger-enable-o2 #include<bits/stdc++.h> #define int long long using namespace std; const int maxn = 500010,mod = 998244353,M = 499122177,G = 3; int n,L,num,R[maxn],a[maxn],b[maxn],c[maxn],d[maxn]; int poly[maxn],inv[maxn]; inline int read() { int x = 0,f = 1;char ch = getchar(); for(;!isdigit(ch);ch = getchar())if(ch == '-')f = -f; for(;isdigit(ch);ch = getchar())x = 10 * x + ch - '0'; return x * f; } inline int ksm(int x,int t) { int res = 1; while(t) { if(t & 1) res = 1LL * res * x % mod; x = 1LL * x * x % mod; t >>= 1; } return res; } inline void NTT(int *a,int f,int n,int L) { for(int i=0;i<n;i++) R[i] = (R[i>>1] >> 1) | ((i & 1) << (L - 1)); for(int i=0;i<n;i++)if(i < R[i])swap(a[i],a[R[i]]); for(int i=1;i<n;i<<=1) { int wn = ksm(G,(mod - 1) / (i << 1)); if(f == -1)wn = ksm(wn,mod - 2); for(int j=0;j<n;j+=(i<<1)) { int w = 1; for(int k=0;k<i;k++,w=1LL * w * wn % mod) { int x = a[j + k], y = 1LL * w * a[j + k + i ] % mod; a[j + k] = ((x + y) % mod + mod) % mod; a[j + k + i] = ((x - y) % mod + mod) % mod; } } } if(f == -1) { int inv = ksm(n,mod - 2); for(int i=0;i<n;i++)a[i] = 1LL * a[i] * inv % mod; } } inline void inverse(int *a,int *b,int n,int L) { if(n == 1){b[0] = ksm(a[0],mod - 2);return;} inverse(a,b,n>>1,L-1); memcpy(c,a,n*sizeof(int));memset(c+n,0,n*sizeof(int)); NTT(c,1,n<<1,L+1);NTT(b,1,n<<1,L+1); for(int i=0;i<(n<<1);i++) b[i] = 1LL * b[i] * ((2 - 1LL * c[i] * b[i] % mod + mod) % mod) % mod; NTT(b,-1,n<<1,L+1);memset(b+n,0,n*sizeof(int)); } inline void sqrt(int *a,int *b,int n,int L) { if(n == 1){b[0] = 1;return;} sqrt(a,b,n>>1,L-1);memset(d,0,n*2*sizeof(int));inverse(b,d,n,L); memcpy(c,a,n*sizeof(int));memset(c+n,0,n*sizeof(int)); NTT(c,1,n<<1,L+1);NTT(b,1,n<<1,L+1);NTT(d,1,n<<1,L+1); for(int i=0;i<n<<1;i++) b[i] = (1LL * c[i] * d[i] % mod + b[i]) %mod * M % mod; NTT(b,-1,n<<1,L+1);memset(b+n,0,n*sizeof(int)); } signed main() { n = read(); for(int i=0;i<n;i++)poly[i] = read(); int m; for(m=n,n=1;n<=m;n<<=1) L++; inverse(poly,inv,n,L); for(int i=0;i<m;i++)printf("%lld ",inv[i]); }
