oj.uz

Submission #51383

# Submission time Handle Problem Language Result Execution time Memory
51383 2018-06-17T18:48:26 Z spencercompton Match (CEOI16_match) C++17
37 / 100
 1780 ms 16516 KB 
#include <bits/stdc++.h>
using namespace std;
string str;
int dp[2001][2001];
bool go(int s, int e){
	if(s>e){
		return true;
	}
	if(dp[s][e]!=-1){
		return dp[s][e]==1;
	}
	bool ret = false;
	for(int i = s+1; i<=e && !ret; i++){
		ret |= (str[s]==str[i]) && go(s+1,i-1)&&go(i+1,e);
	}
	if(ret){
		dp[s][e] = 1;
	}
	else{
		dp[s][e] = 0;
	}
	return ret;
}
string ans  = "";
void build(int s, int e){
	if(s>e){
		return;
	}
	for(int i = e; i>=s+1; i--){
		if(str[s]==str[i] && go(s+1,i-1) && go(i+1,e)){
			ans += "(";
			build(s+1,i-1);
			ans += ")";
			build(i+1,e);
			return;
		}
	}
	ans += "ERROR";
}
int main(){
	cin >> str;
	assert(str.length()<=2000);
	for(int a = 0; a<2001; a++){
		for(int b = 0; b<2001; b++){
			dp[a][b] = -1;
		}
	}
	if(go(0,str.length()-1)){
		build(0,str.length()-1);
		cout << ans<< endl;
	}
	else{
		cout << -1 << endl;
	}
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 15992 KB Output is correct
2 Correct 14 ms 16000 KB Output is correct
3 Correct 13 ms 16032 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 15992 KB Output is correct
2 Correct 14 ms 16000 KB Output is correct
3 Correct 13 ms 16032 KB Output is correct
4 Correct 116 ms 16164 KB Output is correct
5 Correct 20 ms 16228 KB Output is correct
6 Correct 848 ms 16312 KB Output is correct
7 Correct 1780 ms 16516 KB Output is correct

Subtask #3
0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 15992 KB Output is correct
2 Correct 14 ms 16000 KB Output is correct
3 Correct 13 ms 16032 KB Output is correct
4 Correct 116 ms 16164 KB Output is correct
5 Correct 20 ms 16228 KB Output is correct
6 Correct 848 ms 16312 KB Output is correct
7 Correct 1780 ms 16516 KB Output is correct
8 Runtime error 5 ms 16516 KB Execution killed with signal 11 (could be triggered by violating memory limits)
9 Halted 0 ms 0 KB -