zoj 1402 Magnificent Meatballs

#include <stdio.h>#include <stdlib.h>int main(void){    int pos[31],i,n,sum,flag,temp;    while( scanf("%d",&n)!=EOF && n )    {        sum = 0; flag = 1; temp = 0;        for(i=1; i<=n; i++)        { scanf("%d",&pos[i]); sum += pos[i];        }        if( sum%2 != 0 )        { printf("No equal partitioning.n"); continue;        }        sum /= 2;        for(i=1; i<=n; i++)        { temp += pos[i]; if( temp == sum )     break; if( temp > sum ) {     flag = 0;     break; }        }        if(!flag) printf("No equal partitioning.n");        else printf("Sam stops at position %d and Ella stops at position %d.n",i,i+1);    }return 0;}