Solved some problem from codechef and codeforces

23 files changed, 153 insertions, 0 deletions

diff --git a/codechef/AirHockey/inp b/codechef/AirHockey/inp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/codechef/AirHockey/inp
diff --git a/codechef/AirHockey/main b/codechef/AirHockey/main
new file mode 100755
index 0000000..9e054fb
--- /dev/null
+++ b/codechef/AirHockey/main
diff --git a/codechef/AirHockey/main.cpp b/codechef/AirHockey/main.cpp
new file mode 100644
index 0000000..ba9a839
--- /dev/null
+++ b/codechef/AirHockey/main.cpp
@@ -0,0 +1,15 @@
+#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 a, b;
+    cin >> a >> b;
+    cout << min(7 - a, 7 - b) << endl;
+	}
+}
diff --git a/codechef/AirHockey/main_input0.txt b/codechef/AirHockey/main_input0.txt
new file mode 100644
index 0000000..acb0144
--- /dev/null
+++ b/codechef/AirHockey/main_input0.txt
@@ -0,0 +1,5 @@
+4
+0 0
+2 5
+5 2
+4 3
diff --git a/codechef/AirHockey/main_output0.txt b/codechef/AirHockey/main_output0.txt
new file mode 100644
index 0000000..83d3aa6
--- /dev/null
+++ b/codechef/AirHockey/main_output0.txt
@@ -0,0 +1,4 @@
+7
+2
+2
+3
diff --git a/codechef/BiryaniClasses/inp b/codechef/BiryaniClasses/inp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/codechef/BiryaniClasses/inp
diff --git a/codechef/BiryaniClasses/main b/codechef/BiryaniClasses/main
new file mode 100755
index 0000000..418459e
--- /dev/null
+++ b/codechef/BiryaniClasses/main
diff --git a/codechef/BiryaniClasses/main.cpp b/codechef/BiryaniClasses/main.cpp
new file mode 100644
index 0000000..ce518eb
--- /dev/null
+++ b/codechef/BiryaniClasses/main.cpp
@@ -0,0 +1,15 @@
+#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 x, y;
+    cin >> x >> y;
+    cout << x * y << endl;
+	}
+}
diff --git a/codechef/BiryaniClasses/main_input0.txt b/codechef/BiryaniClasses/main_input0.txt
new file mode 100644
index 0000000..ffae63d
--- /dev/null
+++ b/codechef/BiryaniClasses/main_input0.txt
@@ -0,0 +1,5 @@
+4
+1 10
+1 15
+2 10
+2 15
diff --git a/codechef/BiryaniClasses/main_output0.txt b/codechef/BiryaniClasses/main_output0.txt
new file mode 100644
index 0000000..1c3576b
--- /dev/null
+++ b/codechef/BiryaniClasses/main_output0.txt
@@ -0,0 +1,4 @@
+10
+15
+20
+30
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
diff --git a/codechef/jogging/inp b/codechef/jogging/inp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/codechef/jogging/inp
diff --git a/codechef/jogging/main b/codechef/jogging/main
new file mode 100755
index 0000000..6d83dfd
--- /dev/null
+++ b/codechef/jogging/main
diff --git a/codechef/jogging/main.cpp b/codechef/jogging/main.cpp
new file mode 100644
index 0000000..e28bc48
--- /dev/null
+++ b/codechef/jogging/main.cpp
@@ -0,0 +1,31 @@
+#include<bits/stdc++.h>
+
+
+using namespace std;
+
+#define MOD 1000000007
+
+long long power(long long b, int p) {
+  long long res = 1;
+  while(p) {
+    if(p % 2) res = (res * b) % MOD;
+    b = (b * b) % MOD;
+    p /= 2;
+  }
+  return res;
+}
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+	int tt;
+	cin >> tt;
+	while(tt--){
+    int n;
+    int x;
+    cin >> n >> x;
+    long long y = power(2 ,n - 1);
+    long long ans = (x * y) % MOD;
+    cout << ans << endl;
+	}
+}
diff --git a/codechef/jogging/main.py b/codechef/jogging/main.py
new file mode 100644
index 0000000..d6982e8
--- /dev/null
+++ b/codechef/jogging/main.py
@@ -0,0 +1,11 @@
+t = int(input())
+
+for i in range(t):
+    n, x = input().split()
+    n = int(n)
+    x = int(x)
+    if n != 1:
+        print(((x * 2) ** (n - 1)) % 1000000007)
+    else:
+        print(x)
+    
diff --git a/codechef/jogging/main_input0.txt b/codechef/jogging/main_input0.txt
new file mode 100644
index 0000000..03d2aa8
--- /dev/null
+++ b/codechef/jogging/main_input0.txt
@@ -0,0 +1,4 @@
+3
+1 2
+2 1
+12548 1
diff --git a/codechef/jogging/main_output0.txt b/codechef/jogging/main_output0.txt
new file mode 100644
index 0000000..cefdfa2
--- /dev/null
+++ b/codechef/jogging/main_output0.txt
@@ -0,0 +1,3 @@
+2
+2
+588809226