01.c


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#include <stdlib.h>
#include <stdio.h>
#include "input.h"

#define INPUT "input/01.txt"

void part1(struct input_int* input) {
	// compute depth variations
	int result = 0;
	for(size_t i = 1; i < input->line_count; i++) {
		if(input->lines[i] > input->lines[i-1])
			result++;
	}
	printf("%d\n", result);
}

void part2(struct input_int* input) {
	// compute depth variations
	int result = 0;
	int windowSum = input->lines[0] + input->lines[1] + input->lines[2];
	for(size_t i = 1; i < input->line_count - 2; i++) {
		int newWindowSum = input->lines[i] + input->lines[i+1] + input->lines[i+2];
		if(newWindowSum > windowSum)
			result++;

		windowSum = newWindowSum;
	}
	printf("%d\n", result);
}

int main() {
	// read input
	struct input_int input;
	input_int_read(&input, INPUT);

	// do stuff
	part1(&input);
	part2(&input);

	// cleanup & exit
	input_int_free(&input);
	return 0;
}