codeForces_1A_A_Theatre_Square

OneCodeMonkey · OneCodeMonkey · commit 3479995e0271 · 2019-12-18T14:36:47.000+08:00
diff --git a/codeForces/codeForces_1A_A_Theatre_Square.cpp b/codeForces/codeForces_1A_A_Theatre_Square.cpp
@@ -0,0 +1,35 @@
+/**
+ * 思路：矩形用小正方形填充，只需行和列取整就行了。
+ * 注意陷阱，不要用 int32，否则结果打印不了最大 10^18 这样的大数
+ * AC：
+ * Time:31 ms	Memory:0 KB
+ *
+ */
+#include<stdio.h>
+#include<map>
+#include<utility>
+
+using namespace std;
+
+int main()
+{
+	int n, m, a;
+	long long row = 0, col = 0, ans = 0;
+	scanf("%d%d%d", &n, &m, &a);
+	if (n % a == 0) {
+		col = n / a;
+	}
+	else {
+		col = n / a + 1;
+	}
+	if (m % a == 0) {
+		row = m / a;
+	}
+	else {
+		row = m / a + 1;
+	}
+
+	ans = row * col;
+	printf("%lld", ans);
+	return 0;
+}
