11

#include<string>
#include<cstring>
#include<stdio.h>
#include<vector>
#include <sstream>
#include<iostream>


int main(int argc, char const *argv[]){
    std::vector<int> nums {10, 15, 3, 7};
    int k = 17;
    for (int i = 0; i < nums.size(); ++i)
    {
        for (int j = 0; j < nums.size(); ++j)
        {
            if (nums[i] + nums[j] == k)
            {
                std::cout << "true";
                return 0;
            }
        }
    }
    std::cout << "false";
    return 0;
}