题解

#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c;
    cin >> a >> b >> c;
    if(a>0){
        cout << a << endl;
    } 
    if(b>0){
        cout << b << endl;
    }
    if(c>0){
        cout << c << endl;
    }
    return 0;
}