oj.uz

Submission #62013

# Submission time Handle Problem Language Result Execution time Memory
62013 2018-07-27T08:52:08 Z gs14004 parentrises (BOI18_parentrises) C++17
0 / 100
 4 ms 508 KB 
#include<bits/stdc++.h>
using namespace std;
using pi = pair<int, int>;
using lint = long long;
const int MAXN = 1000050;
 
bool Do(string s, string cert){
	int c0 = 0, c1 = 0;
	for(int i=0; i<s.size(); i++){
		if(s[i] == '('){
			if(cert[i] != 'B') c0++;
			if(cert[i] != 'R') c1++;
		}
		else{
			if(cert[i] != 'B') c0--;
			if(cert[i] != 'R') c1--;
			if(c0 < 0 || c1 < 0) return 0;
		}
	}
	if(c0 == 0 && c1 == 0) return 1;
	return 0;
}
string solve(string s){
	queue<int> que;
	string chk;
	int cnt = 0;
	chk.resize(s.size());
	for(int i=0; i<s.size(); i++){
		if(s[i] == '('){
			que.push(i);
			cnt++;
			chk[i] = '?';
		}
		else{
			if(cnt > 0){
				chk[i] = '!';
				cnt--;
			}
			else{
				if(que.empty()) return "impossible";
				int x = que.front();
				que.pop();
				chk[x] = 'G';
				chk[i] = '!';
			}
		}
	}
	cnt = 0;
	for(int i=0; i<s.size(); i++){
		if(s[i] == '('){
			if(chk[i] == 'G') cnt += 2;
			else{
				cnt++;
				if(cnt & 1) chk[i] = 'R';
				else chk[i] = 'B';
			}
		}
		else{
			if(cnt & 1) chk[i] = 'R';
			else chk[i] = 'B';
			cnt--;
		}
	}
  assert(cnt >= 0);
	for(int i=(int)s.size()-1; i>=0; i--){
		if(s[i] == ')' && cnt){
			chk[i] = 'G';
			cnt--;
		}
	}
	if(cnt > 0) return "impossible";
	return chk;
}
 
int f(int x){ return x; }
int main(){
	char buf[MAXN];
	int p, t; cin >> p;
	if(p == 1){
		scanf("%d",&t);
		while(t--){
			scanf("%s",buf);
			string ans = buf;
			printf("%s\n", solve(buf).c_str());
		}
	}
	else{
		scanf("%d",&t);
		while(t--){
			int n; cin >> n;
			cout << f(n) << endl;
		}
	}
}

Compilation message

parentrises.cpp: In function 'bool Do(std::__cxx11::string, std::__cxx11::string)':
parentrises.cpp:9:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<s.size(); i++){
               ~^~~~~~~~~
parentrises.cpp: In function 'std::__cxx11::string solve(std::__cxx11::string)':
parentrises.cpp:28:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<s.size(); i++){
               ~^~~~~~~~~
parentrises.cpp:49:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<s.size(); i++){
               ~^~~~~~~~~
parentrises.cpp: In function 'int main()':
parentrises.cpp:80:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&t);
   ~~~~~^~~~~~~~~
parentrises.cpp:82:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%s",buf);
    ~~~~~^~~~~~~~~~
parentrises.cpp:88:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&t);
   ~~~~~^~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 248 KB Output is correct
2 Incorrect 4 ms 508 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 508 KB Output is correct
2 Incorrect 2 ms 508 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 508 KB Output is correct
2 Incorrect 2 ms 508 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 508 KB Output is correct
2 Incorrect 2 ms 508 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 508 KB Output isn't correct

Subtask #6
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 508 KB Output isn't correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 508 KB Output isn't correct