add aoc 2022

1 files changed, 30 insertions, 0 deletions

diff --git a/advent-of-code/2022/02/1.c b/advent-of-code/2022/02/1.c
new file mode 100644
index 0000000..a699612
--- /dev/null
+++ b/advent-of-code/2022/02/1.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define BUFSZ 1024
+
+char buf[BUFSZ];
+int valuetbl[3] = {1, 2, 3};
+int wintbl[3][3] = {
+    {3, 6, 0},
+    {0, 3, 6},
+    {6, 0, 3}
+};
+
+
+int score(char a, char b) {
+    return valuetbl[b - 'X'] + wintbl[a - 'A'][b - 'X'];
+}
+
+int main() {
+    FILE *fp = fopen("input", "r");
+    if (fp == NULL) return -1;
+    int scr = 0;
+    while (fgets(buf, BUFSZ, fp)) {
+        if (strlen(buf) <= 1) continue;
+        scr += score(buf[0], buf[2]);
+    }
+    printf("%d\n", scr);
+    return 0;
+}