'commit'

TangDou/AcWing/SegmentTree/tangdou.cpp

@@ -0,0 +1,21 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+int n, m;
+void dfs(int u, string s,int pre ){
+    if(u==m+1){
+        cout << s << endl;
+        return;
+    }
+    for (int i = pre+1; i <=n ; i++){
+        if(s=="")
+            dfs(u + 1, to_string(i), i);
+        else
+            dfs(u + 1, s + " " + to_string(i), i);
+    }
+}
+ int main() {
+    cin >> n >> m;
+    dfs(1, "", 0);
+    return 0;
+}