제출 #150182

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
150182		GucciBelt (#200)	HicCup (FXCUP4_hiccup)	C++17	24 / 100	214 ms	5448 KiB

hiccup

#include "hiccup.h"
#include <bits/stdc++.h>

using namespace std;

const int N = 1e6+5;

int HicCup(string S) {
	stack<int> stk;
	for(int i = 0, pv = -1; i < S.size(); i++) {
		if(S[i] == 'H') stk.emplace(i), pv = -1;
		else if(S[i] == 'C') {
			if(stk.empty()) return -1;
			else stk.pop();
			pv = i;
		} else {
			if(pv != -1) pv = i;
			else return -1;
		}
	}
	if(!stk.empty()) return -1;
	int l = 0, r = S.size();
	while(l < r) {
		int mid = (l + r + 1) >> 1;
		queue<int> Q;
		bool chk = false;
		for(int i = 0; i < S.size(); i++) {
			if(S[i] == 'C') {
				chk = true;
				Q.emplace(0);
			} else if(S[i] == '!') {
				if(Q.empty() && !chk) return -1;
				else if(!Q.empty()) {
					int now = Q.front(); Q.pop();
					if(now + 1 < mid) Q.emplace(now + 1);
				}
			}
		}
		if(Q.empty()) l = mid;
		else r = mid - 1;
	}	
	return l;
}

컴파일 시 표준 에러 (stderr) 메시지

hiccup.cpp: In function 'int HicCup(std::__cxx11::string)':
hiccup.cpp:10:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0, pv = -1; i < S.size(); i++) {
                          ~~^~~~~~~~~~
hiccup.cpp:27:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < S.size(); i++) {
                  ~~^~~~~~~~~~

• Subtask 1: 24 / 24
• Subtask 2: 0 / 76