oj.uz

답안 #616108

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
616108 2022-07-31T21:42:01 Z elpro123 괄호 문자열 (CEOI16_match) C++14
37 / 100
 46 ms 440 KB 
#include <bits/stdc++.h>
using namespace std;
 
const int MAXN = 2004;
 
int N;
string s;
char ans[MAXN];
 
bool check(stack<char> st, int x){
    //mira si entra en el caso de ser una cadena vacia
	for(int i = x; i<N; i++){
        //cout<<s[i]<<" "<<st.top()<<"\n";
		if(!st.empty() && s[i] == st.top()){//hay un par de iguales ()
            st.pop();
        }else{//no hay un par, hay otro elemento distinto
            st.push(s[i]);
        }
        //cout<<st.empty()<<"\n";
    }
	return st.empty();
}
 
int main() {
	cin>>s;
    N=s.length();
	stack<char> st;
	for(int i = 0; i < N; i++) {
		st.push(s[i]);
		if(check(st, i + 1)){//se habre con (
            ans[i] = '(';
        }else{//hay otro distinto
			ans[i] = ')';
			st.pop();
            //si nos quedamos sin elementos y no se completaron los pares, -1
            //o no se puede formar un par con los elementos sobrantes, -1
			if(st.empty() || st.top() != s[i]){
				cout<<"-1\n";
				return 0;
			}
			st.pop();//procedemos a verificar otro par
		}
        //cout<<st.top()<<"\n";
	}
    
	if(st.empty()){ 
        for(int i = 0; i < N; i++){
           cout << ans[i];
        }
    }else{ 
        cout<<"-1\n";
    }

	return 0;

}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct

Subtask #2
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 2 ms 300 KB Output is correct
6 Correct 4 ms 308 KB Output is correct
7 Correct 7 ms 212 KB Output is correct

Subtask #3
0 / 63.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 2 ms 300 KB Output is correct
6 Correct 4 ms 308 KB Output is correct
7 Correct 7 ms 212 KB Output is correct
8 Runtime error 46 ms 440 KB Execution killed with signal 6
9 Halted 0 ms 0 KB -