mia/aoc2021
2
1
Fork 0
Code Releases Activity

Day 1/C: Improve, return both results

Browse source
This commit is contained in:
Mia Herkt 2021-12-15 03:16:25 +01:00
parent e753594336
commit 2d7350d2c1
Signed by: mia
GPG key ID: 72E154B8622EC191
2 changed files with 19 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
01/input.h
View file

File diff suppressed because one or more lines are too long

29
01/solution.c
View file

@ -1,19 +1,28 @@
#include <stdio.h> #include <stdio.h>
#include <stdint.h>
#include "input.h" enum {winsize=3};
int main(void) { int main(void) {
uint16_t answer = 0; int num[winsize], res[4]={0}, new, i, j;
uint32_t prev = 0;
for (uint16_t *p = input+3; p < (&input)[1]; p++) {
uint32_t new = *(p-2) + *(p-1) + *p;
if (new > prev) for (i=0;scanf("%d",&num[i%winsize])==1;i++) {
answer++; if (i) {
if (num[i%winsize] > res[1])
res[0]++;
prev = new; res[1] = num[i%winsize];
if (i>2) {
for (j=0,new=0;j<winsize;j++)
new += num[j];
if (new > res[3])
res[2]++;
res[3] = new;
}
}
} }
printf("Answer: %d\n", answer); printf("Silver: %d\nGold: %d\n", res[0], res[2]);
} }