From a3b244cb98c455c2c88ee17b8424fa6fa8cf805d Mon Sep 17 00:00:00 2001
From: InigoGutierrez <inigogf.95@gmail.com>
Date: Wed, 25 Dec 2019 20:18:48 +0100
Subject: Resuelto 345 en c++: Sudokus correctos.

---
 c/345_sudokusCorrectos.cpp | 77 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 c/345_sudokusCorrectos.cpp

diff --git a/c/345_sudokusCorrectos.cpp b/c/345_sudokusCorrectos.cpp
new file mode 100644
index 0000000..37b078c
--- /dev/null
+++ b/c/345_sudokusCorrectos.cpp
@@ -0,0 +1,77 @@
+#include <iostream>
+
+int sudoku[9][9];
+int casos;
+int row, col;
+int checker[9];
+
+void cleanChecker() {
+	int i;
+	for (i = 0; i < 9; i++) {
+		checker[i] = 0;
+	}
+}
+
+int touchChecker(int row, int col) {
+	if (checker[sudoku[row][col]-1])
+		return 1;
+	checker[sudoku[row][col]-1] = 1;
+	return 0;
+}
+
+// Devuelve 1 si encuentra error, 0 si no
+int region(int startRow, int startCol) {
+	int row, col;
+	cleanChecker();
+	for (row = startRow; row < startRow + 3; row++) {
+		for (col = startCol; col < startCol + 3; col++) {
+			if (touchChecker(row, col))
+				return 1;
+		}
+	}
+	return 0;
+}
+
+std::string computeCase() {
+		// Leer caso
+		for (row = 0; row < 9; row++) {
+			for (col = 0; col < 9; col++) {
+				std::cin >> sudoku[row][col];
+			}
+		}
+
+		// Computar caso
+		// Filas
+		for (row = 0; row < 9; row++) {
+			cleanChecker();
+			for (col = 0; col < 9; col++) {
+				if (touchChecker(row, col)) {
+					return "NO";
+				}
+			}
+		}
+		// Columnas
+		for (col = 0; col < 9; col++) {
+			cleanChecker();
+			for (row = 0; row < 9; row++) {
+				if (touchChecker(row, col)) {
+					return "NO";
+				}
+			}
+		}
+		// Celdas 3x3
+		for (row = 0; row < 9; row+=3) {
+			for (col = 0; col < 9; col+=3) {
+				if (region(row, col)) {
+					return "NO";
+				}
+			}
+		}
+		return "SI";
+}
+
+int main(void) {
+	for (std::cin >> casos; casos > 0; casos--) {
+		std::cout << computeCase() << std::endl;
+	}
+}
-- 
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