Submission #1939894

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cmath>
#include<algorithm>
#include<string>
#include<cstring>
#include<cstdlib>
#include<utility>
#include<map>
#include<vector>
#include<stack>
#include<queue>
#define loop(i,a,b) for(int i=a;i<b;i++)
#define rep(i,a) loop(i,0,a)
#define pi acos(-1)
#define pb push_back
#define int long long
using namespace std;
typedef pair<int,int> p;
typedef long long ll;

signed main(){
	int n,m;
	cin>>n>>m;
	int ans=0;
	if(2*n<m){
		ans=n;
		m-=2*n;
		ans+=m/4;
	}else{
		ans=m/2;
	}
	cout<<ans<<endl;
	return 0;
}

Submission Info

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