#include using namespace std; #define fst(t) std::get<0>(t) #define snd(t) std::get<1>(t) #define thd(t) std::get<2>(t) using ll = long long; using P = std::tuple; const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1}; int main(){ std::cin.tie(nullptr); std::ios::sync_with_stdio(false); int N; std::cin >> N; std::cin.ignore(); for(int _=0;_=first;--i){ if(S[i] > '9'){ if(i == first){carry = true;} else{S[i-1] += 1;} S[i] -= 10; }else{ break; } } if(carry){std::cout << 1;} for(int i=first;i