题解 | #又一版 A+B#

#include <cstdio>
#include <iostream>
#include <string>
#include <cstring>
#include <algorithm>

using namespace std;

string ConvertT2M(long long x, int m){
	string ans;
	if(!x){
		ans.push_back('0');
	}else{
		while(x){
			ans.push_back(x%m+'0');
			x/=m;
		}
	}
	reverse(ans.begin(),ans.end());
	return ans;
}

int main(){
	int m;
	long long x, y;
	while(scanf("%d",&m) != EOF){
		if(!m){
			return 0;
		}
		scanf("%lld%lld",&x,&y);
		printf("%s\n",ConvertT2M(x+y, m).c_str());
	}
	return 0;
}