Submission #845971

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Source Code Expand

#include <algorithm>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <map>
#include <iostream>
#include <set>
#include <utility>
#include <vector>

using namespace std;

int main(){
  int N;
  scanf("%d", &N);
  vector<long long int> A(N+1, 0);
  for (int i = 1; i <= N; i++){
    scanf("%lld", &(A[i]));
  }
  long long int result = 0;
  for (int i = 1; i < N; i++){
    if (A[i] > 0){
      if (A[i+1] >= A[i]){
        result += A[i];
        A[i+1] -= A[i];
        A[i] -= A[i];
      }else if (A[i+1] < A[i]){
        result += A[i+1];
        A[i] -= A[i+1];
        A[i+1] -= A[i+1];
      }
    }
  }
  for (int i = 1; i <= N; i++){
    result += A[i]/2;
  }
  cout << result << endl;
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:15:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &N);
                  ^
./Main.cpp:18:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &(A[i]));
                           ^

Judge Result