#include using namespace std; int main() { int N; cin >> N; assert(1 <= N && N <= 200000); int sum = 0; vectorS(N); for(int i = 0; i < N; i++) { cin >> S[i]; sum += S[i].size(); assert(1 <= S[i].size() && S[i].size() <= 200000); } assert(1 <= sum && sum <= 200000); }