jason9288
diff --git a/‎Source/ch01/100.cpp b/‎Source/ch01/100.cpp
diff --git a/‎Source/ch01/15649.cpp
Lines changed: 38 additions & 0 deletions b/‎Source/ch01/15649.cpp
Lines changed: 38 additions & 0 deletions
@@ -0,0 +1,38 @@
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+int N, M;
+vector<int> vec;
+
+void f() {
+	if(vec.size() == M) {
+		for(int i : vec) cout << i << " ";
+		cout << "\n";
+		return;
+	}
+	for(int i = 0; i < N; i++) {
+		bool isOK = true;
+		for(int j : vec) {
+			if(j == i) {
+				isOK = false;
+				break;
+			}
+		}
+		if(isOK) {
+			vec.push_back(i);
+			f();
+			vec.pop_back();
+		}
+	}
+}
+
+int main() {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL); cout.tie(NULL);
+
+	cin >> N >> M;
+	f();
+	return 0;
+}