小学算术

#include<cstdio>#include<iostream>using namespace std;int main(){int a,b;int c,ans;while(scanf("%d%d",&a,&b)==2){if(!a && !b)return ;ans=0;c=0;for(int i=9;i>=0;i--){c=(a%10+b%10+c)>9?1:0;ans+=c;a/=10;b/=10;}printf("%d\n",ans);}}