Submission #1405720

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Source Code Expand

#include <iostream>

int main() {
  unsigned long long N, M;
  std::cin >> N >> M;
  if (N * 2 >= M) {
    std::cout << M / 2 << std::endl;
  } else {
    std::cout << N + (M - N * 2) / 4 << std::endl;
  }
  return 0;
}

Submission Info

Judge Result