#include <iostream>
#include <set>

int main() {
    size_t volCnt;
    std::set<std::pair<int, int>> volCoord;

    std::cin >> volCnt;

    for (size_t i = 0u; i < volCnt; ++i) {
        int x, y;
        std::cin >> x >> y;
    }

    srand(time(NULL));
    std::cout << (rand() % 60) << std::endl;
}