摘要:
//c//https://github.com/ssdutyuyang199401/hduacm/blob/master/1002.c#include<stdio.h>#include<string.h>int shu(char a){return (a-'0');}int main(){char 阅读全文
摘要:
//c#include "stdio.h"int main() {int a = 0, sum = 0;while (scanf("%d", & a) != EOF) {if ((a << 31) >> 31 == 0) {sum = a / 2;sum *= a + 1;printf("%d\n\ 阅读全文