50164. Dice

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>

#define max(a,b) ((a)>(b)?(a):(b))
#define min(a,b) ((a)<(b)?(a):(b))

int r, c;
int arr[1024][1024];

void ipt(){
    scanf("%d %d", &r, &c);
    for(int i = 0; i < r; i++){
        for(int j = 0; j < c; j++){
            scanf("%d", &arr[i][j]);
        }
    }
}

int count_valid_12(int x, int y){
    int cnt[7] = {0};
    if(arr[x + 1][y] + arr[x + 1][y + 2] != 7) return 0;
    if(arr[x + 1][y + 1] + arr[x + 1][y + 1 + 2] != 7) return 0;
    for(int i = 0; i < 4; i++) cnt[arr[x + 1][y + i]]++;
    for(int i = 1; i <= 6; i++) if(cnt[i] >= 2) return 0;


    int res_1 = -1, res_2 = -1;
    for(int i = 1; i <= 6; i++){
        if(cnt[i] == 0 && res_1 == -1) res_1 = i;
        else if(cnt[i] == 0) res_2 = i;
    }

    int up_1 = 0, down_1 = 0, up_2 = 0, down_2 = 0;
    for(int i = 0; i < 4; i++){
        if(arr[x][y + i] == res_1) up_1++;
        if(arr[x + 2][y + i] == res_1) down_1++;
        if(arr[x][y + i] == res_2) up_2++;
        if(arr[x + 2][y + i] == res_2) down_2++;
    }

    int ans = up_1 * down_2 + up_2 * down_1;
    // printf("ans is %d\n", ans);
    return ans;
}

void solve(){
    int cnt = 0;
    for(int i = 0; i < r - 2; i++){
        for(int j = 0; j < c - 3; j++){
            cnt += count_valid_12(i, j);
        }
    }
    printf("%d\n", cnt);
}

int main(){
    ipt();
    solve();
}