你好

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int x,y;
	cin>>x>>y;
	int z=3-x-y;
	if (x==y)
	{
		cout<<x;	
	}
	else
	{
		cout<<z;
	}

	return 0; 
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int a,b;
	cin>>a>>b;
	int c=3-a-b;
	if (a==b) cout<<a;
	else cout<<c;
	return 0; 
}

不会就不要看题解

#include <bits/stdc++.h> using namespace std; int main() { int x,y; cin>>x>>y; int z=3-x-y; if (x==y) { cout<<x; } else { cout<<z; }

return 0; 

}

#include<bits/stdc++.h> using namespace std; int main() { int x,y; cin>>x>>y; int z=3-x-y; if (x==y) { cout<<x; } else { cout<<z; } return 0; }