oj.uz

Submission #932487

# Submission time Handle Problem Language Result Execution time Memory
932487 2024-02-23T13:43:20 Z pcc parentrises (BOI18_parentrises) C++14
50 / 100
 33 ms 9224 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>


void solve(){
	string s;
	cin>>s;
	vector<int> v[2];
	for(int i = 0;i<s.size();i++){
		v[s[i] == ')'].push_back(i);
	}
	string ans = s;
	reverse(v[1].begin(),v[1].end());
	bool flag = true;
	if(v[0].size()>v[1].size()){
		int pr = v[0].size()-v[1].size(),pl = 0;
		if(pr>v[1].size()){
			cout<<"impossible\n";
			return;
		}
		while(pr<v[1].size()&&pl<v[0].size()&&v[1][pr]>v[0][pl])pl++,pr++;
		for(int i = 0;i<pr;i++)ans[v[1][i]] = 'G';
		for(int i = 0;i<pl;i++)ans[v[0][i]] = 'G';
	}
	else{
		int pl = v[1].size()-v[0].size(),pr = 0;
		if(pl>v[0].size()){
			cout<<"impossible\n";
			return;
		}
		while(pl<v[0].size()&&pr<v[1].size()&&v[1][pr]>v[0][pl])pl++,pr++;
		for(int i = 0;i<pr;i++)ans[v[1][i]] = 'G';
		for(int i = 0;i<pl;i++)ans[v[0][i]] = 'G';
	}
	pii cnt = {0,0};
	for(int i = 0;i<ans.size();i++){
		if(s[i] == '('){
			if(ans[i] == 'G')cnt.fs++,cnt.sc++;
			else{
				if(cnt.fs>cnt.sc)cnt.sc++,ans[i] = 'B';
				else cnt.fs++,ans[i] = 'R';
			}
		}
		else{
			if(ans[i] == 'G')cnt.fs--,cnt.sc--;
			else{
				if(cnt.fs>cnt.sc)cnt.fs--,ans[i] = 'R';
				else cnt.sc--,ans[i] = 'B';
			}
		}
		if(cnt.fs<0||cnt.sc<0){
			flag = false;
		}
	}
	if(cnt.fs||cnt.sc)flag = false;
	cout<<(flag?ans:"impossible")<<'\n';
	return;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int t;cin>>t>>t;
	while(t--)solve();
}
/*
()()()
*/

Compilation message

parentrises.cpp: In function 'void solve()':
parentrises.cpp:16:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for(int i = 0;i<s.size();i++){
      |                ~^~~~~~~~~
parentrises.cpp:24:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |   if(pr>v[1].size()){
      |      ~~^~~~~~~~~~~~
parentrises.cpp:28:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   while(pr<v[1].size()&&pl<v[0].size()&&v[1][pr]>v[0][pl])pl++,pr++;
      |         ~~^~~~~~~~~~~~
parentrises.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   while(pr<v[1].size()&&pl<v[0].size()&&v[1][pr]>v[0][pl])pl++,pr++;
      |                         ~~^~~~~~~~~~~~
parentrises.cpp:34:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |   if(pl>v[0].size()){
      |      ~~^~~~~~~~~~~~
parentrises.cpp:38:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |   while(pl<v[0].size()&&pr<v[1].size()&&v[1][pr]>v[0][pl])pl++,pr++;
      |         ~~^~~~~~~~~~~~
parentrises.cpp:38:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |   while(pl<v[0].size()&&pr<v[1].size()&&v[1][pr]>v[0][pl])pl++,pr++;
      |                         ~~^~~~~~~~~~~~
parentrises.cpp:43:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |  for(int i = 0;i<ans.size();i++){
      |                ~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 604 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 576 KB Output is correct
17 Correct 2 ms 1332 KB Output is correct
18 Correct 2 ms 604 KB Output is correct
19 Correct 2 ms 1116 KB Output is correct
20 Correct 2 ms 1240 KB Output is correct
21 Correct 33 ms 2124 KB Output is correct
22 Correct 16 ms 9224 KB Output is correct
23 Correct 13 ms 2932 KB Output is correct
24 Correct 15 ms 5024 KB Output is correct
25 Correct 16 ms 9188 KB Output is correct

Subtask #5
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Expected integer, but "impossible" found
2 Halted 0 ms 0 KB -

Subtask #6
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Expected integer, but "impossible" found
2 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Expected integer, but "impossible" found
2 Halted 0 ms 0 KB -