CF25A

Author: EndlessCheng

main/1-99/25A.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	. "fmt"
+	"io"
+)
+
+// github.com/EndlessCheng/codeforces-go
+func CF25A(in io.Reader, out io.Writer) {
+	var n, c, tar int
+	Fscan(in, &n)
+	a := make([]int, n)
+	for i := range a {
+		Fscan(in, &a[i])
+		a[i] &= 1
+	}
+	for _, v := range a[:3] {
+		c += v
+	}
+	if c < 2 {
+		tar = 1
+	}
+	for i, v := range a {
+		if v == tar {
+			Fprint(out, i+1)
+		}
+	}
+}
+
+//func main() { CF25A(os.Stdin, os.Stdout) }

main/1-99/25A_test.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"github.com/EndlessCheng/codeforces-go/main/testutil"
+	"testing"
+)
+
+// https://codeforces.com/problemset/problem/25/A
+// https://codeforces.com/problemset/status/25/problem/A
+func TestCF25A(t *testing.T) {
+	// just copy from website
+	rawText := `
+inputCopy
+5
+2 4 7 8 10
+outputCopy
+3
+inputCopy
+4
+1 2 1 1
+outputCopy
+2`
+	testutil.AssertEqualCase(t, rawText, 0, CF25A)
+}