1 files changed, 4 insertions, 1 deletions
diff --git a/2020/13/solve.c b/2020/13/solve.c
index dde2ed1..5cb45d1 100644
--- a/2020/13/solve.c
+++ b/2020/13/solve.c
@@ -1,7 +1,7 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
+#include <time.h>
 
 int part_one(char *data)
 {
@@ -78,8 +78,11 @@ int main(int argc, char *argv[])
 	char buf[SIZE] = { 0 };
 	fread(buf, SIZE, 1, fp);
 
+	clock_t tic = clock();
 	printf("%d\n", part_one(buf));
 	printf("%lu\n", part_two(buf));
+	clock_t toc = clock();
+	printf("TIME: %f seconds\n", (double)(toc - tic) / CLOCKS_PER_SEC);
 
 	fclose(fp);
 	return 0;