#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(a>='a' && a<='z') a-=32; else if(a>='A' && a<='Z') a+=32; }

#include<iostream> #include<bits/stdc++.h> using namespace std; int main(){ char a[10010]; cin>>a; for(int i=0;i<strlen(a);i+=1){ if(a[i]>='A'&&a[i]<='Z') a[i]=a[i]+32; else if(a[i]>='a'&&a[i]<='z') a[i]=a[i]-32; } cout<<a; }

#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(a>='a')cout<<char(a-32); else if(a>='A')cout<<char(a+32); else cout<<a; return 0; }

#include<bits/stdc++.h> using namespace std; int main() { char str1; cin>>str1; //int c=(int)str1; //cout<<c<<endl; if (str1>='a' && str1<= 'z'){ str1=str1-32; }else if(str1>='A' && str1<='z'){ str1=str1+32; } }

#include<iostream> using namespace std; char c; void x(char &c){ cin >> c; if(c >= 'a' && c <= 'z'){ c = c - 32 ; int main(){ x(c); return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(a>='a'&&a<='z'){ a-=32; }else if(a<='Z'&&a>='A'){ a+=32; } cout<<a; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(a>=97&&a<=122){ a-=32; cout<<a; }else if(a>=65&&a<=90){ a+=32; cout<<a; }else{ cout<<a; } return 0; }

#include<iostream> #include<cstring> #include<string> using namespace std; int main(){ char a,b; cin>>a; if(a>='a' && a<='z'){ b=a-32; cout<<b; }

#include<bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(a>='a' and 'z'>=a) { a=char(a-=32); cout<<a; return 0; } if(a>='A' and 'Z'>=a) { a=char(a+=32); cout<<a; return 0; } else{ cout<<a; } }