语法练习

#include <iostream>

using namespace std;
int m, n;

int main(int argc, char** argv) {
  cin >> m >> n;
  for (int y = 0; y < m; ++y) {
    for (int x = 0; x < n; ++x) {
      if (x == n - 1) cout << "PUM";
      else cout << y * n + x + 1 << ' ';
    }
    cout << endl;
  }

  return 0;
}