一定正确的答案

#include <iostream>
using namespace std;
int main(){
    int a;
    cin>>a;
    char b;
    cin>>b;
    for(int i=1;i<=1000;i++){
        if(a>=i)a-=i;
        else{
            cout<<a;
            break;
        }
        for(int j=1;j<=i;j++){
            cout<<"*";
        }
        cout<<endl;
    }
}