Submission #806821

---

Source Code Expand

#include <bits/stdc++.h>

using namespace std;

const int MAXN = (int) 1e5;
int a[MAXN];

int main() {
  int n;
  scanf("%d", &n);
  for (int i = 0; i < 2 * n; i++) {
    scanf("%d", &a[i]);
  }
  sort(a, a + 2 * n);
  int ans = 0;
  for (int i = 0; i < 2 * n; i += 2) {
    ans += a[i];
  }
  printf("%d\n", ans);
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:10:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:12:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &a[i]);
                       ^

Judge Result