codeforce好地方啊 Bear and Elections *
居然可以看测试数据,哪里没过一目了然,哈哈哈
1 #include<cstdio> 2 #include<iostream> 3 #include<algorithm> 4 #include<cstring> 5 #include<cmath> 6 #include<queue> 7 #include<map> 8 using namespace std; 9 #define MOD 1000000007 10 const int INF=0x3f3f3f3f; 11 const double eps=1e-5; 12 typedef long long ll; 13 #define cl(a) memset(a,0,sizeof(a)) 14 #define ts printf("*****\n"); 15 const int MAXN=1005; 16 int n,m,tt; 17 struct Node 18 { 19 int id,x; 20 void in(int i) 21 { 22 scanf("%d",&x); 23 id=i; 24 } 25 friend bool operator<(Node a,Node b) 26 { 27 if(a.x==b.x) return a.id<b.id; 28 else return a.x<b.x; 29 } 30 }node[MAXN]; 31 int main() 32 { 33 int i,j,k,ca=1; 34 #ifndef ONLINE_JUDGE 35 freopen("1.in","r",stdin); 36 #endif 37 while(scanf("%d",&n)!=EOF) 38 { 39 priority_queue<Node> q; 40 for(i=0;i<n;i++) 41 { 42 node[i].in(i); 43 q.push(node[i]); 44 } 45 int tot=0; 46 while(1) 47 { 48 Node now=q.top(); 49 q.pop(); 50 if(node[0].x+tot>now.x||now.id==0) 51 { 52 break; 53 } 54 now.x-=1; 55 tot++; 56 q.push(now); 57 } 58 printf("%d\n",tot); 59 } 60 }