CF11A

main/1-99/11A.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"bufio"
+	. "fmt"
+	"io"
+)
+
+// https://space.bilibili.com/206214
+func cf11A(_r io.Reader, out io.Writer) {
+	in := bufio.NewReader(_r)
+	var n, d, pre, v, ans int
+	for Fscan(in, &n, &d, &pre); n > 1; n-- {
+		Fscan(in, &v)
+		if v <= pre {
+			k := (pre-v)/d + 1
+			ans += k
+			v += k * d
+		}
+		pre = v
+	}
+	Fprint(out, ans)
+}
+
+//func main() { cf11A(os.Stdin, os.Stdout) }

main/1-99/11A_test.go

@@ -0,0 +1,20 @@
+// Generated by copypasta/template/generator_test.go
+package main
+
+import (
+	"github.com/EndlessCheng/codeforces-go/main/testutil"
+	"testing"
+)
+
+// http://codeforces.com/problemset/problem/11/A
+// https://codeforces.com/problemset/status/11/problem/A
+func Test_cf11A(t *testing.T) {
+	testCases := [][2]string{
+		{
+			`4 2
+1 3 3 2`,
+			`3`,
+		},
+	}
+	testutil.AssertEqualStringCase(t, testCases, 0, cf11A)
+}