蓝桥杯2022CB

暴力偏分，呜呜呜，题目好难~

1|0A

int main()
{
	
	string s = "2022";int r = 0;
	for(auto x:s)
	{
		r = r*9+x-'0';
	}
	cout<<r;
	
	return 0;
}

2|0B

#include<bits/stdc++.h>
using namespace std;
#define ll long long
int s[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
int main()
{
	int res = 0;
	for(int i = 1;i<13;i++)
	{
		string r = to_string(i);
		string rt = to_string(s[i]);
		if(i<10)) r = "0"+r;
		if(rt.size()<2) rt = "0"+rt;
		r+=rt;
		if((s[1]-s[0]==1&&s[2]-s[1]==1)||(s[2]-s[1]==1&&s[3]-s[2]==1))
		res++;
	}
	cout<<res;
}

3|0C

#include<bits/stdc++.h>
using namespace std;
#define ll long long
ll a,b,n;
int main()
{
	cin>>a>>b>>n;
	ll day = 0;
	ll sev = 5*a+2*b;
	day += (n/sev)*7;
	n%=sev;
	if(n>5*a)
	{
		n-=5*a;day+=5;
		while(n>0)
		{
			n-=b;
			day++;
		} 
	}
	else {
		while(n>0)
		{
			n-=a;
			day++;
		}
	}
	cout<<day;
	return 0;
}

4|0D

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1100,p = 1e9+7;
ll a[N],b[N];
int n,m;
int main()
{
	cin>>n;
	for(int i = 1;i<=n;++i)
	{
		int x = max(2*n-2*i-1,2*i-3)+1;
		cout<<x<<endl;
	}
	return 0;
}

5|0E

	cout<<"94";

6|0F

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1100,p = 1e9+7;
ll a[N][N];
ll f[N][N];
int n,m;
ll k;

bool ck(int a,int b,int c,int d)
{
	return f[c][d] - f[a][d]-f[c][b]+f[a][b]<=k;
}

int main()
{
	cin>>n>>m>>k;
	for(int i = 1;i<= n; ++i)
	for(int j = 1;j<= m; ++j) cin>>a[i][j];
	
	for(int i = 1;i<= n; ++i)
	for(int j = 1;j<= m; ++j)
	{
		f[i][j]=f[i-1][j]+f[i][j-1]-f[i-1][j-1]+a[i][j];
	}
	ll res = 0;
	for(int i = 0;i<= n; ++i)
	for(int j = 0;j<= m; ++j)
		for(int o = i+1;o <= n;o++)
		for(int l = j+1;l<=m; ++l)
		if(ck(i,j,o,l))
		res = res+1%p;
	cout<<res;
	return 0;
}

7|0G

#include<iostream>
using namespace std;
 
const int N = 1e7+10, MOD = 1000000007;
int f[N];
int main()
{
	f[1] = 1;
	f[2] = 2;
	f[3] = 5;
	int n;
	cin >> n;
	for(int i = 4; i <= n; i ++)
	{
		f[i] = (2*f[i-1]+f[i-3])%MOD;
	}
	cout << f[n];
	return 0;
}

8|0H

//错误代码
#include<bits/stdc++.h>
using namespace std;
const int N = 1e5+9;
int n,m;
int f[N];

int find(int x)
{
	if(x != f[x]) return x=find(f[x]);
	else return x;
}

struct poi
{
	double x,y,z;
}p[N];

bool ck(int i,int j)
{
	double z = max(p[i].z,p[j].z); z*=z;
	double s = abs(p[i].x-p[j].x)*abs(p[i].x-p[j].x)+abs(p[i].y-p[j].y)+abs(p[i].y-p[j].y);
	return s<=z;
}

int main()
{
	ios::sync_with_stdio(false),cin.tie(0);
	cin>>n>>m;
	for(int i = 1;i<m+n+2;i++) f[i] = i;

	for(int i = 0;i<n;i++)
	{
		double a,b,c; cin>>a>>b>>c;
		p[i] = {a,b,c};
		for(int j = 0;j<i;++j)
		{
			if(ck(i,j))
			f[i] = find(f[j]);
		}
	}
	//for(int i = 0;i<n;++i) cout<<f[i]<<' ';
	set<int> s;
	for(int i = 0;i<m;i++)
	{
		double a,b,c; cin>>a>>b>>c;
		p[n+i] = {a,b,c};
		for(int j = 0;j<n;++j)
		if(ck(j,n+i)&&!s.count(find(f[j])))

			s.insert(find(f[j]));
	}
	int res = 0;
	for(int j = 0;j<n;++j)
	if(s.count(f[j]))
	res++;
	cout<<res;
	return 0;
}

9|0I

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1100,p = 1e9+7;
int m,n;
unordered_set<string> st;
void dfs(int a,int b,string s,ll lv)
{
	if(lv<0||s.size()>n+m) return ;
	if(s.size() == n+m&&s[n+m-1]=='0'&&lv ==0)
	{
		if(!st.count(s))
		st.insert(s);
		return ;
	}
	if(a>0)
	dfs(a-1,b,s+'1',lv*2);
	if(b>0)
	dfs(a,b-1,s+'0',lv-1);
}

int main()
{
	cin>>n>>m;
	dfs(n,m,"",(ll)2);
	cout<<st.size();
	return 0;
}

10|0J

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 2e5+9,p = 1e9+7;
ll a[N];
int n,m;


int main()
{
	cin>>n;ll s = 0;
	for(int i = 1;i<=n;i++) scanf("%d",&a[i]),s+=a[i];
	int k = 0;
	while(s!=n)
	{
		int x = max_element(a+1,a+1+n)-a;//cout<<x<<' ';
		int t = a[x];
		a[x] = sqrt(a[x]/2+1);
		s -= t-a[x];
		for(int i = x+1;i<=n;i++)
		{
			if(a[i]==t) a[i]=a[x],s-=t-a[x];
			else break;
		}
		k++;
	}
	cout<<k;

	return 0;
}

__EOF__

本文作者：InsiApple
本文链接：https://www.cnblogs.com/InsiApple/p/16122375.html
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