Submission #861962

#	Time	Username	Problem	Language	Result	Execution time	Memory
861962		maks007	parentrises (BOI18_parentrises)	C++14	22 / 100	1066 ms	11252 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;
		for(int i = 0; i < n; i ++) {
			if(str[i] == ')') {
				if(st.size() == 0) {
					nope.push_back(i);
					continue;
				}
				cnt[i] ++;
				st.pop();
			}else {
				st.push(i);
				cnt[i] ++;
			}
		}
		while(st.size() != 0) nope.push_back(st.top()), st.pop();
		for(auto i : nope) {
			if(str[i] == '(') {
				for(int j = i + 1; j < str.size(); j ++) {
					if(str[j] == ')' && cnt[j] <= 1) {
						cnt[j] ++;
						cnt[i] = 5;
						break;
					}
				}
				if(cnt[i] == 5) continue;
				cout << "impossible\n";
				goto end;
			}else {
				for(int j = 0; j < i; j ++) {
					if(str[j] == '(' && cnt[j] <= 1) {
						cnt[j] ++;
						cnt[i] = 5;
						break;  
					}
				}
				if(cnt[i] == 5) continue;
				cout << "impossible\n";
				goto end;
			}
		}
		for(auto i : cnt) {
			if(i == 2) cout << "G";
			else if(i == 1) cout << "R";
			else cout << "B";
			assert(i > 0);
		}
		cout << "\n";
		continue;
		end:;
	}
	return 0;
}

Compilation message (stderr)

parentrises.cpp: In function 'int main()':
parentrises.cpp:41:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for(int j = i + 1; j < str.size(); j ++) {
      |                        ~~^~~~~~~~~~~~

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