Submission #1460243

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Source Code Expand

#include <bits/stdc++.h>
#define REP(i,n) for(int i=0;i<(int)(n);i++)
#define ALL(x) (x).begin(),(x).end()
#define LL long long

using namespace std;

int main(){

    LL N,M;
    cin>>M>>N;
    LL ans;
    if(M>=N/2)ans=N/2;
    else{
        ans=M;
        N-=2*M;
        ans+=N/4;
    }
    cout<<ans<<endl;
    return 0;
}

Submission Info

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