Submission #65299491

Source Code Expand

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#include <stdio.h>
#include <inttypes.h>
int N;
int64_t A[212345];
int main(void) {
  int i;
  int64_t sum = 0, ave, delta, ans = 0;
  if (scanf("%d", &N) != 1) return 1;
  for (i = 0; i < N; i++) {
    if (scanf("%" SCNd64, &A[i]) != 1) return 1;
    sum += A[i];
  }
  if (sum % N != 0) {
    puts("-1");
    return 0;
  }
  ave = sum / N;
  for (i = 1; i < N; i++) {
    delta = A[i - 1] - ave;
 
 
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#include <stdio.h>
#include <inttypes.h>

int N;
int64_t A[212345];

int main(void) {
	int i;
	int64_t sum = 0, ave, delta, ans = 0;
	if (scanf("%d", &N) != 1) return 1;
	for (i = 0; i < N; i++) {
		if (scanf("%" SCNd64, &A[i]) != 1) return 1;
		sum += A[i];
	}
	if (sum % N != 0) {
		puts("-1");
		return 0;
	}
	ave = sum / N;
	for (i = 1; i < N; i++) {
		delta = A[i - 1] - ave;
		if (delta < 0) {
			puts("-1");
			return 0;
		}
		ans += delta;
		A[i] += delta;
	}
	printf("%" PRId64 "\n", ans);
	return 0;
}

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