Solved some problem from codechef and codeforces

7 files changed, 56 insertions, 0 deletions

diff --git a/codechef/DenseBracketSequence/inp b/codechef/DenseBracketSequence/inp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/codechef/DenseBracketSequence/inp
diff --git a/codechef/DenseBracketSequence/main b/codechef/DenseBracketSequence/main
new file mode 100755
index 0000000..4682a3d
--- /dev/null
+++ b/codechef/DenseBracketSequence/main
diff --git a/codechef/DenseBracketSequence/main.cpp b/codechef/DenseBracketSequence/main.cpp
new file mode 100644
index 0000000..6785a12
--- /dev/null
+++ b/codechef/DenseBracketSequence/main.cpp
@@ -0,0 +1,33 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+  ios_base::sync_with_stdio(false);
+  cin.tie(NULL);
+  int tt;
+  cin >> tt;
+  while (tt--) {
+    int n;
+    cin >> n;
+    string s;
+    cin >> s;
+    int count = 0;
+    stack<char> st;
+    st.push(s[0]);
+    for(int i = 1; i < n; i++) {
+      if(s[i] == '(') {
+        st.push('(');
+      }
+      if(s[i] == ')') {
+        if(st.top() == '(' && !st.empty()){
+          st.pop();
+          count++;
+        }
+      }
+    }
+    cout << count << endl;
+  }
+}
+
+
diff --git a/codechef/DenseBracketSequence/main_input0.txt b/codechef/DenseBracketSequence/main_input0.txt
new file mode 100644
index 0000000..c93dd40
--- /dev/null
+++ b/codechef/DenseBracketSequence/main_input0.txt
@@ -0,0 +1,9 @@
+4
+8
+()(())()
+6
+((()))
+10
+()()()()()
+8
+((()))()
diff --git a/codechef/DenseBracketSequence/main_input1.txt b/codechef/DenseBracketSequence/main_input1.txt
new file mode 100644
index 0000000..017efbb
--- /dev/null
+++ b/codechef/DenseBracketSequence/main_input1.txt
@@ -0,0 +1,7 @@
+3
+5
+(()))
+5
+()())
+7
+((())))
\ No newline at end of file
diff --git a/codechef/DenseBracketSequence/main_output0.txt b/codechef/DenseBracketSequence/main_output0.txt
new file mode 100644
index 0000000..c49baff
--- /dev/null
+++ b/codechef/DenseBracketSequence/main_output0.txt
@@ -0,0 +1,4 @@
+2
+0
+4
+2
diff --git a/codechef/DenseBracketSequence/main_output1.txt b/codechef/DenseBracketSequence/main_output1.txt
new file mode 100644
index 0000000..ae7dd0b
--- /dev/null
+++ b/codechef/DenseBracketSequence/main_output1.txt
@@ -0,0 +1,3 @@
+1
+1
+1
\ No newline at end of file