제출 #150710

#제출 시각아이디문제언어결과실행 시간메모리
150710GucciBelt (#200)HicCup (FXCUP4_hiccup)C++17
100 / 100
85 ms8192 KiB
#include "hiccup.h" #define pii pair<int, int> #define x first #define y second #include <bits/stdc++.h> using namespace std; const int N = 1e6+5; int n, lvl[N]; string str; bool checkFunction(int mid) { int cnt = 0; stack<pii> stk; for(int i = 0; i < n; ++i) { if(str[i] == 'C') { cnt--; if(!stk.empty() && stk.top().y > cnt) return false; stk.emplace(0, cnt); } if(str[i] == '!') { if(stk.empty()) continue; pii now = stk.top(); stk.pop(); if(++now.x == mid) continue; stk.emplace(now); } if(str[i] == 'H') { cnt++; } } return stk.empty(); } int HicCup(string S) { str = S; n = S.size(); int cnt = 0, pv = -1; for(int i = 0; i < n; ++i) { if(S[i] == 'H') cnt++, pv = -1; if(S[i] == 'C') { lvl[i] = cnt; if(!~--cnt) return -1; else pv = i; } if(S[i] == '!') { if(pv == -1) return -1; else lvl[i] = lvl[pv]; } } if(cnt) return -1; int l = 0, r = S.size(); while(l < r) { int mid = (l + r + 1) >> 1; if(checkFunction(mid)) l = mid; else r = mid-1; } return l; }
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