#include <iostream>
#include <algorithm>
#include <vector>
int main() {
std::vector <std::string> strings = {"c", "c++", "go", "java", "python"};
std::cout << std::is_sorted( strings.begin(), strings.end(),
[](std::string a, std::string b){ return (a < b); });
}
/*
run:
1
*/