Question

giúp vs

Answer 1

#include <bits/stdc++.h>

using namespace std;

int n;

int main()

{

cin>>n;

if (n==1) cout<<"31";

if (n==2) cout<<"28 hoac 29";

if (n==3) cout<<"31";

if (n==4) cout<<"30";

if (n==5) cout<<"31";

if (n==6) cout<<"30";

if (n==7) cout<<"31";

if (n==8) cout<<"31";

if (n==9) cout<<"30";

if (n==10) cout<<"31";

if (n==11) cout<<"30";

if (n==12) cout<<"31";

return 0;

}