Submission #861964

#	Time	Username	Problem	Language	Result	Execution time	Memory
861964		maks007	parentrises (BOI18_parentrises)	C++14	11 / 100	1 ms	604 KiB

parentrises

#include "bits/stdc++.h"

using namespace std;

#define int long long

pair <int,int> mn(pair <int,int> a, pair <int,int> b) {
	if(max(a.first, a.second) < max(b.first, b.second) ) return a;
	return b;
}

signed main () {
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int T;
	cin >> T;
	int q;
	cin >> q;
	while(q --) {
		string str;
		cin >> str;
		int n = str.size();
		stack <int> st;
		vector <int> cnt(n, 0), nope;
		set <int> close, open;
		for(int i = 0; i < n; i ++) {
			if(str[i] == ')') {
				if(st.size() == 0) {
					if(open.size()) {
						cnt[i] = 5; 
						cnt[*open.begin()] ++;
						open.erase(open.begin());
						continue;
					}
					cout << "impossible\n";
					goto end;
				}
				cnt[i] ++;
				st.pop();
				close.insert(i);
			}else {
				st.push(i);
				cnt[i] ++;
				open.insert(i);
			}
		}
		while(st.size()) {
			nope.push_back(st.top());
			st.pop();
		}
		sort(nope.rbegin(), nope.rend());
		for(auto i : nope) {
			if(close.size() == 0) {
				cout << "impossible\n";
				goto end;
			}
			if(i > *--close.end()) {
				cout << "impossibe\n";
				goto end;
			}
			cnt[i] = 5;
			cnt[*--close.end()] ++;
			close.erase(--close.end());
		}
		for(auto i : cnt) {
			if(i == 2) cout << "G";
			else if(i == 1) cout << "R";
			else cout << "B";
		}
		cout << "\n";
		continue;
		end:;
	}
	return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 11 / 11
• Subtask 3: 0 / 6
• Subtask 4: 0 / 28
• Subtask 5: 0 / 6
• Subtask 6: 0 / 16
• Subtask 7: 0 / 28