Submission #1114444

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cassert>
#include<cstring>
#include<climits>
#include<sstream>
#include<deque>
#include<vector>
#include<algorithm>
#include<set>
#include<map>
#include<bitset>

#define REP(i,s,n) for(int i=s;i<n;++i)
#define rep(i,n) REP(i,0,n)

using namespace std;

typedef long long ll;

int main() {
  ll a,b;
  cin >> a >> b;
  ll c = min(a,(ll)(b/2LL));
  a -= c;
  b -= c * 2LL;
  c += (ll)(b/4LL);
  cout << c << endl;
  return 0;
}

Submission Info

Judge Result