简单题。

#include<iostream>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<cstdio>
using namespace std; int a,b,tot,cnt;
int u[];
char ans[]; int main()
{
while(~scanf("%d%d",&a,&b))
{
a=a+b;
if(a==)
{
printf("0\n");
continue;
}
int tmp=abs(a);
tot=,cnt=;
while(tmp) u[tot++]=tmp%,tmp=tmp/; for(int i=; i<tot; i++)
{
ans[cnt++]=u[i]+'';
if((i+)%==&&tot-i!=) ans[cnt++]=',';
}
if(a<) ans[cnt++]='-';
for(int i=cnt-; i>=; i--) printf("%c",ans[i]);
printf("\n");
}
return ;
}

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