using namespace std;
#include <bits/stdc++.h>
#define BEGIN ios_base::sync_with_stdio(0);cin.tie(0);
#define END return EXIT_SUCCESS;
#define FOR(I,A,B) for(int (I)=(A);(I)<(B);++(I))
#define ALL(C) (C).begin(),(C).end()
int main(int argc,char**argv)
{
	BEGIN
    string S;cin>>S;
    for(char &C:S)C^=32;
    cout<<S<<endl;
	END
}