A.cpp

a.cpp

@@ -0,0 +1,94 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+#define int long long int
+#define ll long long
+#define quickie ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define rep(i, a, b) for(int i=a; i<b; i++)
+#define rep1(i, a, b) for(int i=a; i<=b; i++)
+#define pb push_back
+#define mp make_pair
+#define fi first
+#define se second
+#define SZ(x) ((int)(x).size())
+#define db double
+#define mi map<int, int>
+#define vi vector<int>
+#define mod 1000000007
+#define INF 1e17
+#define test int t; cin >> t;
+#define all(a) a.begin(),a.end()
+#define pi 3.141592653589
+#define fact(n) rep(i, 1, n+1)ft.pb((ft[i-1]*i)%mod) ;
+int power(int x, int y) ;
+int gcd(int a, int b) ;
+vi ft = {1} ;
+int modInv(int i) {return power(i,mod-2);}
+int ncr(int n,int r) {return (n>=r?(ft[n]*modInv(ft[r]))%mod*modInv(ft[n-r])%mod:0);}
+
+int power(int x, int y) {
+    int res = 1; x %= mod ;
+    while (y > 0) {
+        if (y & 1)
+            res = (res*x)%mod ;
+        y = y>>1;
+        x = (x*x)%mod ;
+    }
+    return res%mod;
+}   
+
+int gcd(int a,int b) {
+    if(a==0) return b;
+    return gcd(b%a,a);
+}
+
+// #include <ext/pb_ds/assoc_container.hpp>
+// #include <ext/pb_ds/tree_policy.hpp>
+// using namespace __gnu_pbds;
+// template<typename T>
+// using ordered_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
+// template<typename T>
+// using ordered_multiset = tree<T,null_type,less_equal<T>,rb_tree_tag,tree_order_statistics_node_update>;
+// (*****FOR USING ORDERED SET CHANGE INT*******)
+
+// struct chash {
+//     const int RANDOM = (long long)(make_unique<char>().get()) ^ chrono::high_resolution_clock::now().time_since_epoch().count();
+//     static unsigned long long hash_f(unsigned long long x) {
+//         x += 0x9e3779b97f4a7c15;
+//         x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
+//         x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
+//         return x ^ (x >> 31);
+//     }
+//     static unsigned hash_combine(unsigned a, unsigned b) { return a * 31 + b; }
+//     int operator()(int x) const { return hash_f(x)^RANDOM; }
+// };
+
+signed main() {
+    quickie
+    test
+    while(t--) {
+        int n ;
+        cin >> n ;
+        set<string> ans ;
+        string temp = "" ;
+        for(int i=0; i<n; i++) {
+            temp += "()" ;
+        }
+        string tt = temp ;
+        ans.insert(temp) ;
+        for(int i=2; i<2*n-1; i++) {
+            temp = "(" ;
+            int left = (i-1)/2 ;
+            for(int j=0; j<left; j++) {
+                temp += "()" ;
+            }
+            if(i%2 == 0) temp += "(" ;
+            temp += ")" ;
+            for(int j=i+1; j<2*n; j++) {
+                temp += tt[j] ;
+            }
+            ans.insert(temp) ;
+        }
+        for(auto i : ans) cout << i << "\n" ;
+    }
+}