CF329A

Author: EndlessCheng

main/300-399/329A.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"bufio"
+	. "fmt"
+	"io"
+)
+
+// github.com/EndlessCheng/codeforces-go
+func CF329A(_r io.Reader, _w io.Writer) {
+	in := bufio.NewReader(_r)
+	out := bufio.NewWriter(_w)
+	defer out.Flush()
+
+	var n, cr, cc int
+	var s string
+	Fscan(in, &n)
+	r := make([]int, n)
+	c := make([]int, n)
+	for i := 0; i < n; i++ {
+		Fscan(in, &s)
+		for j, b := range s {
+			if b == '.' {
+				if r[j] == 0 {
+					r[j] = i + 1
+					cr++
+				}
+				if c[i] == 0 {
+					c[i] = j + 1
+					cc++
+				}
+			}
+		}
+	}
+	if cr == n {
+		for i, v := range r {
+			Fprintln(out, v, i+1)
+		}
+	} else if cc == n {
+		for i, v := range c {
+			Fprintln(out, i+1, v)
+		}
+	} else {
+		Fprint(out, -1)
+	}
+}
+
+//func main() { CF329A(os.Stdin, os.Stdout) }

main/300-399/329A_test.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"github.com/EndlessCheng/codeforces-go/main/testutil"
+	"testing"
+)
+
+// https://codeforces.com/problemset/problem/329/A
+// https://codeforces.com/problemset/status/329/problem/A
+func TestCF329A(t *testing.T) {
+	// just copy from website
+	rawText := `
+inputCopy
+3
+.E.
+E.E
+.E.
+outputCopy
+1 1
+2 2
+3 3
+inputCopy
+3
+EEE
+E..
+E.E
+outputCopy
+-1
+inputCopy
+5
+EE.EE
+E.EE.
+E...E
+.EE.E
+EE.EE
+outputCopy
+3 3
+1 3
+2 2
+4 4
+5 3`
+	testutil.AssertEqualCase(t, rawText, 0, CF329A)
+}