oj.uz

Submission #52919

# Submission time Handle Problem Language Result Execution time Memory
52919 2018-06-27T07:27:45 Z Petr(#1971) Match (CEOI16_match) C++11
37 / 100
 2000 ms 1376 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pp;
typedef pair<ll,ll> pll;
void read(int& x){ scanf("%d",&x); }
void read(ll& x){ scanf("%lld",&x); }
template<typename T,typename... Args>
void read(T& a,Args&... b){ read(a); read(b...); }
#define all(x) (x).begin(),(x).end()
#define pb push_back
#define eb emplace_back
#define x first
#define y second

int n;
char s[100010];
char ans[100010];

stack<char> stk;

bool solve(int l, int r){
	if(l>r) return 1;
	if(((r+l)&1) == 0) return 0;
	
	if(s[l] == s[r]){ ans[l]='('; ans[r]=')'; return solve(l+1, r-1); }
	
	while(stk.size()) stk.pop();
	for(int i=r; l<=i; --i){
		if(stk.empty() || stk.top() != s[i]) stk.push(s[i]);
		else {
			stk.pop();
			if(stk.empty() && l < i-1 && s[l] == s[i-1]){
				ans[l] = '('; ans[i-1] = ')';
				return solve(l+1, i-2) && solve(i, r);
			}
		}
	}
	return 0;
}
int main()
{
	scanf("%s", s+1);
	n = strlen(s+1);

	if(solve(1, n)){
		puts(ans + 1);
	} else puts("-1");

	return 0;
}

Compilation message

match.cpp: In function 'void read(int&)':
match.cpp:6:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 void read(int& x){ scanf("%d",&x); }
                    ~~~~~^~~~~~~~~
match.cpp: In function 'void read(ll&)':
match.cpp:7:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 void read(ll& x){ scanf("%lld",&x); }
                   ~~~~~^~~~~~~~~~~
match.cpp: In function 'int main()':
match.cpp:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", s+1);
  ~~~~~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 472 KB Output is correct
3 Correct 2 ms 524 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 472 KB Output is correct
3 Correct 2 ms 524 KB Output is correct
4 Correct 2 ms 524 KB Output is correct
5 Correct 2 ms 524 KB Output is correct
6 Correct 2 ms 572 KB Output is correct
7 Correct 2 ms 572 KB Output is correct

Subtask #3
0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 472 KB Output is correct
3 Correct 2 ms 524 KB Output is correct
4 Correct 2 ms 524 KB Output is correct
5 Correct 2 ms 524 KB Output is correct
6 Correct 2 ms 572 KB Output is correct
7 Correct 2 ms 572 KB Output is correct
8 Correct 3 ms 596 KB Output is correct
9 Correct 12 ms 596 KB Output is correct
10 Correct 6 ms 596 KB Output is correct
11 Correct 3 ms 612 KB Output is correct
12 Correct 94 ms 772 KB Output is correct
13 Correct 45 ms 912 KB Output is correct
14 Correct 668 ms 1176 KB Output is correct
15 Correct 4 ms 1176 KB Output is correct
16 Correct 4 ms 1176 KB Output is correct
17 Correct 77 ms 1176 KB Output is correct
18 Correct 10 ms 1176 KB Output is correct
19 Correct 1082 ms 1356 KB Output is correct
20 Correct 436 ms 1356 KB Output is correct
21 Execution timed out 2059 ms 1376 KB Time limit exceeded