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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
typedef int board[5][5];
// Very beautiful and efficient!!
static int check_board(board input, int *numbers, int cnt)
{
board marked = { 0 };
for (int i = 0; i < cnt; i++) {
for (int y = 0; y < 5; y++) {
for (int x = 0; x < 5; x++) {
if (input[y][x] == numbers[i]) {
marked[y][x] = 1;
break;
}
}
}
}
for (int y = 0; y < 5; y++) {
int row = 0;
for (int x = 0; x < 5; x++) {
if (marked[y][x])
row++;
}
if (row == 5)
goto bingo;
}
for (int x = 0; x < 5; x++) {
int column = 0;
for (int y = 0; y < 5; y++) {
if (marked[y][x])
column++;
}
if (column == 5)
goto bingo;
}
return 0;
bingo:;
int res = 0;
for (int x = 0; x < 5; x++) {
for (int y = 0; y < 5; y++) {
if (!marked[y][x])
res += input[y][x];
}
}
return res;
}
static void solve(FILE *fp)
{
int numbers[256] = { 0 };
int cnt = 0;
char ch = 0;
while (fscanf(fp, "%d%c", &numbers[cnt], &ch) > 0 && ch == ',')
cnt++;
board boards[256];
memset(boards, 0xffff, sizeof(board) * 256);
int board_cnt = 0;
int x = 0, y = 0;
while (1) {
if (fscanf(fp, "%d%c", &boards[board_cnt][x][y], &ch) < 1)
break;
if (x++ == 4) {
y++;
x = 0;
}
if (y == 5) {
board_cnt++;
x = 0;
y = 0;
}
}
int won = 0;
for (int num = 0; num < cnt; num++) {
for (int i = 0; i < board_cnt; i++) {
if (boards[i][0][0] == 0x424242)
continue;
int bingo = 0;
if ((bingo = check_board(boards[i], numbers, num + 1))) {
boards[i][0][0] = 0x424242;
won++;
if (won == 1 || won == board_cnt)
printf("%d\n", bingo * numbers[num]);
if (won == board_cnt)
return;
}
}
}
}
int main(int argc, char *argv[])
{
(void)argc;
(void)argv;
FILE *fp = fopen("input", "r");
if (!fp)
exit(EXIT_FAILURE);
clock_t tic = clock();
solve(fp);
clock_t toc = clock();
printf("TIME: %f seconds\n", (double)(toc - tic) / CLOCKS_PER_SEC);
fclose(fp);
return 0;
}
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