补题补题补题~~~~really big numbers

不是啥难题，直接上代码吧。

B - Really Big Numbers
 CodeForces - 817C
 
#i  #include<stdio.h>

#include<string.h>#include<math.h>#include<stdlib.h>int  BigNumbers(long long n){int sum = 0;while(n>0){sum += n%10;n /= 10;}return sum;}int main(){long long N,S;scanf("%lld %lld",&N,&S);for(long long i=S+1 ; i<=N ; i++){if(i - BigNumbers(i)>=S){printf("%lld",N-i+1);return 0;}else if(i == S+162){printf("%lld",N-i+1);return 0;}}printf("0");return 0;}