UVaOJ 414 - Machined Surfaces

#include <stdio.h>#include <string.h>int main(){char buf[30];memset(buf, '\0', sizeof(buf));int n = 0;while(~scanf("%d", &n) && n){fgets(buf, sizeof(buf), stdin);int sum = 0;int min = 65535;for(int i = 0; i < n; ++i){fgets(buf, sizeof(buf), stdin);//可以直接用不安全的gets(buf);int len = 0;char *tmp = buf;while(*tmp++ == 'X');--tmp;//就是这个地方忘记回退多走的一步指针，之前就没得到ACwhile(*tmp++ == ' '){++len;}if(len < min){min = len;}sum += len;len = 0;memset(buf, '\0', sizeof(buf));}printf("%d\n", sum - min * n);}return 0;}