Solved a couple of problems from codechef and codeforces

15 files changed, 85 insertions, 0 deletions

diff --git a/codechef/MagicalDoors/inp b/codechef/MagicalDoors/inp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/codechef/MagicalDoors/inp
diff --git a/codechef/MagicalDoors/main b/codechef/MagicalDoors/main
new file mode 100755
index 0000000..e31eb87
--- /dev/null
+++ b/codechef/MagicalDoors/main
diff --git a/codechef/MagicalDoors/main.cpp b/codechef/MagicalDoors/main.cpp
new file mode 100644
index 0000000..91b03a6
--- /dev/null
+++ b/codechef/MagicalDoors/main.cpp
@@ -0,0 +1,21 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+	int tt;
+	cin >> tt;
+	while(tt--){
+    string s;
+    cin >> s;
+    int ans = 0, x = 0;
+    for (auto ch : s) {
+      char c = '0' + (x ^ (ch - '0'));
+      ans += (c == '0');
+      x ^= (c == '0');
+    }
+    cout << ans << '\n';
+	}
+}
diff --git a/codechef/MagicalDoors/main_input0.txt b/codechef/MagicalDoors/main_input0.txt
new file mode 100644
index 0000000..438d07b
--- /dev/null
+++ b/codechef/MagicalDoors/main_input0.txt
@@ -0,0 +1,4 @@
+3
+111
+010
+10011
diff --git a/codechef/MagicalDoors/main_output0.txt b/codechef/MagicalDoors/main_output0.txt
new file mode 100644
index 0000000..420bd58
--- /dev/null
+++ b/codechef/MagicalDoors/main_output0.txt
@@ -0,0 +1,3 @@
+0
+3
+2
diff --git a/codechef/PawriMeme/inp b/codechef/PawriMeme/inp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/codechef/PawriMeme/inp
diff --git a/codechef/PawriMeme/main b/codechef/PawriMeme/main
new file mode 100755
index 0000000..0f2dcd5
--- /dev/null
+++ b/codechef/PawriMeme/main
diff --git a/codechef/PawriMeme/main.cpp b/codechef/PawriMeme/main.cpp
new file mode 100644
index 0000000..1e20964
--- /dev/null
+++ b/codechef/PawriMeme/main.cpp
@@ -0,0 +1,17 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+	int tt;
+	cin >> tt;
+	while(tt--){
+    string s;
+    cin >> s;
+    s = regex_replace(s, regex("party"), "pawri");
+    cout << s << endl;
+	}
+
+}
diff --git a/codechef/PawriMeme/main_input0.txt b/codechef/PawriMeme/main_input0.txt
new file mode 100644
index 0000000..1cc09ca
--- /dev/null
+++ b/codechef/PawriMeme/main_input0.txt
@@ -0,0 +1,4 @@
+3
+part
+partypartiparty
+yemaihuyemericarhaiauryahapartyhorahihai
diff --git a/codechef/PawriMeme/main_output0.txt b/codechef/PawriMeme/main_output0.txt
new file mode 100644
index 0000000..db22163
--- /dev/null
+++ b/codechef/PawriMeme/main_output0.txt
@@ -0,0 +1,3 @@
+part
+pawripartipawri
+yemaihuyemericarhaiauryahapawrihorahihai
diff --git a/codechef/chefAndTheWildcardMatching/inp b/codechef/chefAndTheWildcardMatching/inp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/codechef/chefAndTheWildcardMatching/inp
diff --git a/codechef/chefAndTheWildcardMatching/main b/codechef/chefAndTheWildcardMatching/main
new file mode 100755
index 0000000..cffe5c6
--- /dev/null
+++ b/codechef/chefAndTheWildcardMatching/main
diff --git a/codechef/chefAndTheWildcardMatching/main.cpp b/codechef/chefAndTheWildcardMatching/main.cpp
new file mode 100644
index 0000000..c00adb4
--- /dev/null
+++ b/codechef/chefAndTheWildcardMatching/main.cpp
@@ -0,0 +1,26 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+	int tt;
+	cin >> tt;
+	while(tt--){
+    string x;
+    string y;
+    cin >> x;
+    cin >> y;
+    bool ok = 1;
+    for(int i = 0; i < x.size(); i++) {
+      if(x[i] != '?' && y[i] != '?') {
+        if(x[i] != y[i]) {
+          ok = 0;
+        }
+      }
+    }
+    cout << (ok ? "Yes" : "No") << endl;
+    
+	}
+}
diff --git a/codechef/chefAndTheWildcardMatching/main_input0.txt b/codechef/chefAndTheWildcardMatching/main_input0.txt
new file mode 100644
index 0000000..c86c473
--- /dev/null
+++ b/codechef/chefAndTheWildcardMatching/main_input0.txt
@@ -0,0 +1,5 @@
+2
+s?or?
+sco??
+stor?
+sco??
diff --git a/codechef/chefAndTheWildcardMatching/main_output0.txt b/codechef/chefAndTheWildcardMatching/main_output0.txt
new file mode 100644
index 0000000..7ae3bc8
--- /dev/null
+++ b/codechef/chefAndTheWildcardMatching/main_output0.txt
@@ -0,0 +1,2 @@
+Yes
+No