'commit'

TangDou/LuoGuBook/P1928_1.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+string expand() {
+    int d;
+    char x;
+    string s;
+    while (cin >> x) {
+        if (x == '[') {
+            cin >> d;
+            string t = expand();
+            while (d--) s += t;
+        } else if (x == ']')
+            return s;
+        else s += x;
+    }
+    return s;
+}
+
+
+int main() {
+    cout << expand();
+    return 0;
+}