From 7c3f32fab3b1a9d628d6856e7a923eb3c3b1ce5f Mon Sep 17 00:00:00 2001 From: Omar Magdy Date: Sat, 25 Jun 2022 18:32:00 +0200 Subject: Solved a couple of problems from codechef and codeforces --- codechef/MagicalDoors/main.cpp | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 codechef/MagicalDoors/main.cpp (limited to 'codechef/MagicalDoors/main.cpp') 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 + +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'; + } +} -- cgit v1.2.3