bc+2,3,5倍数看末尾和各位数和+毕竟这个数据为10^30

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#include<stdio.h>#include<stdlib.h>#include<iostream>#include<cstring>#include<string>#include<string.h>#include<algorithm>#include<math.h>using namespace std;int main(){    string s1;    int len=0,sum=0,i=0;    while(cin>>s1){        len=s1.length();        sum=0;        for(i=0;i<len;i++){          sum+=s1[i]-0;        }        if(s1[len-1]=='0'||s1[len-1]=='2'||s1[len-1]=='4'||s1[len-1]=='6'||s1[len-1]=='8'||s1[len-1]=='5'||sum%3==0)            printf("YES\n");        else            printf("NO\n");    }}