0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-12-25 16:32:02 +00:00
OI-codes/Codeforces/1678/B1/B1.cpp

40 lines
649 B
C++

#include <iostream>
#include <string>
using std::cin;
using std::cout;
const char endl = '\n';
int t, n;
std::string s;
int main() {
std::ios::sync_with_stdio(false);
cin >> t;
while (t--) {
int ans = 0;
cin >> n >> s;
for (int i = 1, t = 1; i < s.size(); i++) {
if (s[i] != s[i - 1]) {
if (t & 1) {
s[i] = s[i - 1];
ans++;
t++;
} else {
t = 1;
}
} else {
t++;
}
}
cout << ans << endl;
}
return 0;
}