Submission #3456234

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Source Code Expand

#include <stdio.h>
typedef long long ll;

int main(void) {
  ll a[4], i, n;
  for(i = 0; i < 4; ++i) scanf("%lld", &a[i]);
  for(i = 1; i < 4; ++i) if(a[i] > a[i - 1] * 2) a[i] = a[i - 1] * 2;
  scanf("%lld", &n);
  printf("%lld", n / 2 * a[3] + (n & 1) * a[2]);
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:6:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   for(i = 0; i < 4; ++i) scanf("%lld", &a[i]);
                                              ^
./Main.cpp:8:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &n);
                    ^

Judge Result