#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <math.h>

#define ROW_LENGTH 120

// array of card multipliers?
// for multiplier: next hit multipliers ++
int main ()
{
	FILE *input;
	input = fopen("./input", "r");
	int offset = 0;
	char c;
	int score = 0;
	int cardId = 0;
	int cardMultipliers[250] = {0};

	char row[ROW_LENGTH];

	// for each card (row in file) (numbers start after :)
	while (fgets(row, ROW_LENGTH, input) != NULL) {
		cardMultipliers[cardId]++;
		int winningNumbers[10] = {0};
		int hits = 0;
		printf("%s\n", row);
		// offset = (strchr(row, '|') - &row[0]) - 2; 
		offset = (strchr(row, ':') - &row[0] + 1); 
		
		int foundNumbers = 0;
		for (int i = 0; row[offset + i] != '|'; i++) {
			if (isdigit(row[offset + i])) {
				while (isdigit(c = row[offset + i])) {
					winningNumbers[foundNumbers] = winningNumbers[foundNumbers] * 10 + (c - '0');
					i++;
				} 
				i--;
				printf("number %d: %d\n", foundNumbers, winningNumbers[foundNumbers]);
				foundNumbers++;
			}
		}

		offset = (strchr(row, '|') - &row[0] + 1); 
		for (int i = 0; row[offset + i] != '\n'; i++) {
			if (isdigit(row[offset + i])) {
				int num = 0;
				while (isdigit(c = row[offset + i])) {
					num = num * 10 + (c - '0');
					i++;
				} 
				for (int i = 0; i < 10; i++) {
					if (num == winningNumbers[i]) hits++;
				}
				i--;
			}
		}
		printf("hits = %d\n", hits);
		for (int i = 0; i < cardMultipliers[cardId]; i++) {
			for (int n = 1; n <= hits; n++) {
				cardMultipliers[cardId + n]++;
			}
		}
		cardId++;
	}

	for (int i = 0; i < 250; i++) score += cardMultipliers[i];
	printf("total cards: %d\n", score);
}