UVALive - 4868 暴力

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
int huiwen(char s[]){
int len = strlen(s);
int min = len / 2;
int flag = 1;
for(int i=0;i<min;i++){
if(s[i]!=s[len-1-i]){
flag = 0;
}
}
return flag;
}
int main(){
char s[10];
while(scanf("%s",&s) && strcmp("0",s) != 0){
long long num = 0;
if(!huiwen(s)){
int len = strlen(s);
while(true){
for(int i = len-1; i >= 0; i--){
if(s[i]!='9'){
s[i] = s[i] + 1;
break;
}else{
s[i] = '0';
}
}
num++;
if(huiwen(s)){
break;
}
}
}
printf("%lld\n",num);
}
}