#include <bits/stdc++.h>   bool chCount[26];   int main() {     int n, m;     std::cin >> n >> m;     int max = -1;     for (; n >= 1; --n) {       int min = 1000000000 + 10;       for (int i = 0; i < m; ++i) {         int x;         std::cin >> x;         min = std::min(x, min);       }       max = std::max(min, max);     }     std::cout << max;   }   