sb3 2 bac2020 t19

#include <stdio.h>
#include <stdbool.h>
#define NMAX 22
int n, m, k, a[NMAX][NMAX];

int main() {
    scanf("%i %i %i", &m, &n, &k);
    for (int i = 1; i <= m; i++) {
        for (int j = 1; j <= n; j++) {
            scanf("%i", &a[i][j]);
        }
    }
    for (int i = 1; i <= m; i++) {
        if (i != k) {
            bool ok = true;
            for (int j = 1; j <= n; j++) {
                ok &= a[i][j] != a[k][j];
            }
            if (ok) {
                puts("DA");
                return 0;
            }
        }
    }
    puts("NU");
    return 0;
}