HOJ 1370 Candy

来源：互联网发布：mac怎么升级到10.12 编辑：程序博客网时间：2024/06/05 09:52

http://acm.hit.edu.cn/hoj/problem/view?id=1370

不能平分就输出-1

N很大数组开大一点

#include <stdio.h>#include <math.h>int block[16384];double average(int block[], int size);bool isint(double x);int main(){    int i, n, sum;    double avg;    while (scanf("%d", &n) != EOF)    {        if (n == -1)            break;        sum = 0;        for (i = 1; i <= n; i++)            scanf("%d", &block[i]);        avg = average(block, n);        if (isint(avg))        {            for (i = 1; i <= n; i++)            {                if (block[i] > avg)                    sum += block[i]-avg;            }            printf("%d\n", sum);        }        else            printf("-1\n");    }}double average(int block[], int size){    double s = 0;    int i;    for (i = 1; i <= size; i++)        s += block[i];    return s/size;}bool isint(double x){    const double eps = 10e-12;    double z;    z = fmod(x, (int)x);    if (z < eps)        return 1;    return 0;}