#include<iostream> using namespace std; int main() { double matrix[3][3],max; for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) cin >> matrix[i][j]; } max = matrix[0][0]; for (int i = 0; i < 3; i++) { if (matrix[i][i] > max) max = matrix[i][i]; if (matrix[i][2 - i] > max) max = matrix[i][2 - i]; } cout << max << endl; return 0; }