蒟蒻求助

#include<bits/stdc++.h>
using namespace std;
int jinzhi(int x,int b){
    int sum=0,value=1;
    while(x!=0){
        if(x%10>=b){
            return 9999999999;
        }
        sum+=((x%10)*value);
        value*=b;
        x=x/10;
    }
    return sum;
}
int main(){
    int a,b,c;
    cin>>a>>b>>c;
    for(int i=2;i<=16;i++){
        if(jinzhi(a,i)*jinzhi(b,i)==jinzhi(c,i)){
            cout<<i<<endl;
            return 0;
        }
    } 
    cout<<0;
    return 0;
}