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// least occurence variabale print #include <bits/stdc++.h> using namespace std; int main() { string s = "aaabcc"; unordered_map<char, int> mp; for(auto x: s){ mp[x]++; } int mini = INT_MAX; for(auto x: mp){ mini = min(mini , x.second); } for(auto x: mp){ if(mini == x.second){ cout<<"LEAST OCCURRED IS "<<x.first; } } return 0; }