Submission #613034

#	Time	Username	Problem	Language	Result	Execution time	Memory
613034		czhang2718	HicCup (FXCUP4_hiccup)	C++17	Compilation error	0 ms	0 KiB

hiccup

#include "hiccup.h"
using namespace std;
#include "bits/stdc++.h"

int HicCup(std::string S) {
	int n = S.size();

	auto check=[&](int x){
		stack<char> s;
		int cur=0;
		for(int i=0; i<n; i++){
			if(s[i]=='!'){
				cur++;
				if(cur==x){
					if(s.size()<2) return 0;
					char c=s.top(); s.pop();
					char h=s.top(); s.pop();
					if(c!='C' && h!='H') return 0;
				}
				cur=0;
			}
			if(s[i]=='C'){
				if(cur) return 0;
				s.push('C');
			}
			if(s[i]=='H'){
				if(cur) return 0;
				s.push('H');
			}
		}
		while(!s.empty()){
			char c=s.top(); s.pop();
			if(c!='!') return 0;
		}
		return 1;
	};

	int x=0;
	for(int i=19; i>=0; i--){
		if(x+(1<<i)<n && check(x+(1<<i))) x+=(1<<i);
	}
	if(!check(x)) return -1;
	return x;
}

Compilation message (stderr)

hiccup.cpp: In lambda function:
hiccup.cpp:12:8: error: no match for 'operator[]' (operand types are 'std::stack<char>' and 'int')
   12 |    if(s[i]=='!'){
      |        ^
hiccup.cpp:22:8: error: no match for 'operator[]' (operand types are 'std::stack<char>' and 'int')
   22 |    if(s[i]=='C'){
      |        ^
hiccup.cpp:26:8: error: no match for 'operator[]' (operand types are 'std::stack<char>' and 'int')
   26 |    if(s[i]=='H'){
      |        ^