C++ :
#include<bits/stdc++.h> using namespace std; int da,xi; string s; int main() { cin>>s; for(int i=0;i<s.size();i++) { if(s[i]>='A' && s[i]<='Z') da++; if(s[i]>='a' && s[i]<='z') xi++; } cout<<min(da,xi); return 0; }
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