Submission #1697827

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Source Code Expand

// glory be to the sky
#include<cstdio>
#include<bits/stdc++.h> 
#define pb push_back
using namespace std;
	
typedef long long ll; 


int main(){

	ios::sync_with_stdio(false);
	cin.tie(0);
	ll N, M;
	cin >> N >> M;
	if (N >= M) cout << M / 2 << endl;
	else {
		ll ans = min(N, M / 2);
		N -= ans, M -= (ans * 2);
		// cout << "DEB" << " " << ans << endl;
		if (M >= 0) ans += M / 4;
		cout << ans << endl;
	} 
	return 0;	
}

Submission Info

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