1 files changed, 25 insertions, 0 deletions

diff --git a/inf/zotks/1.c b/inf/zotks/1.c
new file mode 100644
index 0000000..0fcd69e
--- /dev/null
+++ b/inf/zotks/1.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <signal.h>
+int main (void) {
+	char buf[256];
+	unsigned long long prev = 0;
+	unsigned long long d;
+	unsigned long long numl = 0;
+	unsigned long long a1;
+	while (1) {
+		fgets(buf, 256, stdin);
+		if (ferror(stdin) || feof(stdin))
+			break;
+		numl++;
+		unsigned long long cur = strtoull(buf, NULL, 10);
+		if (numl == 1)
+			a1 = cur;
+		if (numl == 2)
+			d = cur-prev;
+		prev = cur;
+	}
+	printf("%llu\n", (prev-a1)/d+1-numl);
+	return 0;
+}