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CF_131_A.cpp
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62 lines (62 loc) · 1.32 KB
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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
cin.tie(0);cin.sync_with_stdio(0);
cout.tie(0);cout.sync_with_stdio(0);
int t = 1;
while (t--)
{
string str;
cin>>str;
int flag=0;
int uppercase_count=0;
for(int i=0; i<str.size(); i++)
{
if(i==0)
{
if(str[i]>='a' && str[i]<='z')
{
flag=1;
}
}
if(str[i]>='A' && str[i]<='Z')
{
uppercase_count++;
}
}
if(flag==1)
{
if(uppercase_count==str.size()-1)
{
str[0]=str[0]-32;
for(int i=1; i<str.size(); i++)
{
str[i]=str[i]+32;
}
cout<<str<<endl;
}
else
{
cout<<str<<endl;
}
}
else
{
if(str.size()==uppercase_count)
{
for(int i=0; i<str.size(); i++)
{
str[i]=str[i]+32;
}
cout<<str<<endl;
}
else
{
cout<<str<<endl;
}
}
}
return 0;
}