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| author | Bond_009 <bond.009@outlook.com> | 2022-12-01 22:30:22 +0100 |
|---|---|---|
| committer | Bond_009 <bond.009@outlook.com> | 2022-12-01 22:30:22 +0100 |
| commit | baf4910870a6e8999802b9a4a22eabd4142a34e3 (patch) | |
| tree | 2d11443dc21e53bd0d99d015cf789937d6d95862 /13/part1.c | |
| parent | 49d0c908f24b2c193c9deed1716fe36061ba26a1 (diff) | |
Move all Advent of Codes into one repo
Diffstat (limited to '13/part1.c')
| -rw-r--r-- | 13/part1.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/13/part1.c b/13/part1.c deleted file mode 100644 index b62d007..0000000 --- a/13/part1.c +++ /dev/null @@ -1,48 +0,0 @@ -#include <stdio.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> - -#define BUFFER_SIZE 256 -#define MAX_INPUT_LEN 128 - -int solve(const char *filename) -{ - FILE *file = fopen(filename, "r"); - - char buffer[BUFFER_SIZE] = { 0 }; - fgets(buffer, BUFFER_SIZE, file); - int depart = atoi(buffer); - fgets(buffer, BUFFER_SIZE, file); - int bus_ids[MAX_INPUT_LEN] = { 0 }; - bus_ids[0] = atoi(buffer); - int i = 1; - char *p = buffer; - while ((p = strchr(p, ','))) { - // x is never the last value, just keep looping we find a valid input - while (*++p == 'x') { - p += 1; - } - - bus_ids[i++] = atoi(p); - } - - int bus_id = 0; - int wait = INT32_MAX; - for (int j = 0; j < i; j++) { - int id = bus_ids[j]; - int tmprem = id - (depart % id); - if (tmprem < wait) { - bus_id = id; - wait = tmprem; - } - } - - fclose(file); - return bus_id * wait; -} - -int main(int argc, char *argv[]) -{ - printf("%i\n", solve(argv[argc - 1])); -} |
