색종이 만들기 더블릿

#include <stdio.h>
 
int arr[1000][1000] = { 0 };
int white = 0, pink = 0;
 
void cut(int y, int x, int len) {
    int num = arr[y][x],flag=0;
    for (int i = y; i < y + len; i++) {
        for (int j = x; j < x + len; j++) {
            if (arr[i][j] != num) {
                flag = 1;
                break;
            }            
        }
        if (flag == 1)
            break;
    }
    if (num == 1 && flag == 0) {
        pink++;
        return;
    }
    else if (num == 0 && flag == 0) {
        white++;
        return;
    }
    else {
        cut(y, x, len / 2);
        cut(y, x+ len / 2, len / 2);
        cut(y+ len / 2, x, len / 2);
        cut(y+len / 2, x+ len / 2, len / 2);
    }
}
 
int main() {
    int n;
    scanf("%d", &n);
 
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            scanf("%d", &arr[i][j]);
        }
    }
    cut(1, 1, n);
 
    printf("%d\n%d", white, pink);
}