#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N; string S,T; void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>S; int ret=0; FORR(c,S) { if(T.empty()) { T+=c; } else if(T.back()==c) { continue; } else if(T.size()>=2&&T[T.size()-2]==c) { ret++; T.pop_back(); } else { T+=c; } } FORR(c,T) if(c!=T[0]) ret++; ret++; cout<