Codeforces Solution-A. Indian Summer-Solution in C, C++, Java, Python

5
birch yellow
maple red
birch yellow
maple yellow
maple green

4

3
oak yellow
oak yellow
oak yellow

1

#1 Code Example with C++ Programming

Code - C++ Programming

#include <cstdio>
#include <iostream>
#include <string>
#include <set>

int main(){


    int n; std::cin >> n;
    std::set<std::pair<std::string, std::string> > leaves;
    while(n--){
        std::string s1, s2; std::cin >> s1 >> s2;
        leaves.insert(std::pair<std::string, std::string>(s1, s2));
    }

    std::cout << leaves.size() << std::endl;

    return 0;
}

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