#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#define endl "\n"
typedef long long ll;
template<class T, class T2> inline ostream &operator <<(ostream &out, const pair<T, T2> &x) { out << x.first << " " << x.second; return out;}
template<class T, class T2> inline istream &operator >>(istream &in, pair<T, T2> &x) { in >> x.first >> x.second; return in;}
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e9 + 7;
#define debug(...) cout << "Line: " << __LINE__ << endl; \
printDebug(", "#__VA_ARGS__, __VA_ARGS__)
template <typename T>
void printDebug(const char* name, T&& arg1) { cout << (name + 2) << " = " << arg1 << endl; }
template <typename T, typename... T2>
void printDebug(const char* names, T&& arg1, T2&&... args) {
const char* end = strchr(names + 1, ',');
cout.write(names + 2, end - names - 2) << " = " << arg1 << endl;
printDebug(end, args...);
}
const int MAX_L = 1e5 + 10;
string s;
void solve1() {
int t;
cin >> t;
while(t --) {
cin >> s;
string ans = "";
vector<int> blue;
int balance = 0;
bool good = true;
for(int i = 0; i < s.size(); i ++) {
auto it = s[i];
if(it == '(') {
balance ++;
ans += 'B';
blue.push_back(i);
} else {
if(balance == 0) {
if(blue.empty()) {
good = false;
break;
} else {
ans[blue.back()] = 'G';
ans += 'R';
blue.pop_back();
}
} else {
balance --;
ans += 'B';
}
}
}
if(!good) {
cout << "impossible" << endl;
continue;
}
vector<int> blueHelper = {};
reverse(blue.begin(), blue.end());
for(int i = 0; i < s.size() && balance; i ++ ) {
if(!blue.empty() && blue.back() == i) {
blueHelper.push_back(i);
blue.pop_back();
} else if(s[i] == ')' && ans[i] == 'R') {
if(!blueHelper.empty()) {
balance --;
ans[i] = 'G';
blueHelper.pop_back();
}
} else if(s[i] == ')' && ans[i] == 'B') {
if(!blueHelper.empty()) {
balance --;
ans[blueHelper.back()] = 'R';
ans[i] = 'G';
blueHelper.pop_back();
}
}
}
if(balance == 0) {
cout << ans << endl;
} else {
cout << "impossible" << endl;
}
}
}
signed main() {
// ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
int t;
cin >> t;
if(t == 1) {
solve1();
}
return 0;
}
Compilation message
parentrises.cpp: In function 'void solve1()':
parentrises.cpp:36:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
36 | for(int i = 0; i < s.size(); i ++) {
| ~~^~~~~~~~~~
parentrises.cpp:65:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
65 | for(int i = 0; i < s.size() && balance; i ++ ) {
| ~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Unexpected end of file - int32 expected |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Unexpected end of file - int32 expected |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Unexpected end of file - int32 expected |
