题解

#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
cin >> n;
int a[100];
for(int i=1;i<=n;i++){
cin >> a[i];
if(a[i]%10<5){
cout << a[i]-a[i]%10;
cout << endl;
}
if(a[i]%10>=5){
cout << a[i]+(10-a[i]%10);
cout << endl;
}
}
return 0;
}