oj.uz

Submission #253322

# Submission time Handle Problem Language Result Execution time Memory
253322 2020-07-27T17:31:36 Z Lawliet Selling RNA Strands (JOI16_selling_rna) C++17
100 / 100
 665 ms 227584 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAXL = 5;
const int MAXN = 100010;
const int MAXS = 2000010;

char bases[] = "AGCU";

class Trie
{
	public:

		int conv(char c)
		{
			for(int i = 0 ; i < 4 ; i++)
				if( bases[i] == c ) return i;
		}

		void addString(string& s, int ind)
		{
			int cur = 0;

			for(int i = 0 ; i < (int)s.size() ; i++)
			{
				int c = conv( s[i] );

				if( tree[cur][c] == 0 )
					tree[cur][c] = ++cnt;

				cur = tree[cur][c];
				allInd[cur].push_back( ind );
			}
		}

		void getInterval(string& s, int& L, int& R)
		{
			L = R = 0;
			int cur = 0;

			for(int i = 0 ; i < (int)s.size() ; i++)
			{
				int c = conv( s[i] );

				if( tree[cur][c] == 0 )
					return;

				cur = tree[cur][c];
			}

			L = allInd[cur].front();
			R = allInd[cur].back();
		}

		int getQtdInterval(string& s, int L, int R)
		{
			int cur = 0;

			for(int i = 0 ; i < (int)s.size() ; i++)
			{
				int c = conv( s[i] );

				if( tree[cur][c] == 0 )
					return 0;

				cur = tree[cur][c];
			}

			auto itR = upper_bound( allInd[cur].begin() , allInd[cur].end() , R );
			auto itL = lower_bound( allInd[cur].begin() , allInd[cur].end() , L );

			return itR - itL;
		}

		Trie() : cnt(1) {}

	protected:

		int cnt;

		int tree[MAXS][MAXL];
		vector<int> allInd[MAXS];
};

int n, q;

string s[MAXN];

Trie prefixTrie, suffixTrie;

int main()
{
	cin >> n >> q;

	for(int i = 1 ; i <= n ; i++)
		cin >> s[i];

	sort( s + 1 , s + n + 1 );

	for(int i = 1 ; i <= n ; i++)
	{
		prefixTrie.addString( s[i] , i );

		reverse( s[i].begin() , s[i].end() );
		suffixTrie.addString( s[i] , i );
	}

	for(int i = 1 ; i <= q ; i++)
	{
		string prefix, suffix;
		cin >> prefix >> suffix;

		reverse( suffix.begin() , suffix.end() );

		int L, R;
		prefixTrie.getInterval( prefix , L , R );

		printf("%d\n",suffixTrie.getQtdInterval( suffix , L , R ));
	}
}

Compilation message

selling_rna.cpp: In member function 'int Trie::conv(char)':
selling_rna.cpp:19:3: warning: control reaches end of non-void function [-Wreturn-type]
   }
   ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 97416 KB Output is correct
2 Correct 63 ms 97400 KB Output is correct
3 Correct 59 ms 97420 KB Output is correct
4 Correct 55 ms 97400 KB Output is correct
5 Correct 57 ms 97400 KB Output is correct
6 Correct 54 ms 97400 KB Output is correct
7 Correct 54 ms 97400 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 487 ms 215824 KB Output is correct
2 Correct 504 ms 209860 KB Output is correct
3 Correct 534 ms 214008 KB Output is correct
4 Correct 472 ms 208744 KB Output is correct
5 Correct 412 ms 225732 KB Output is correct
6 Correct 423 ms 227584 KB Output is correct
7 Correct 385 ms 121848 KB Output is correct
8 Correct 576 ms 190712 KB Output is correct
9 Correct 535 ms 177528 KB Output is correct
10 Correct 398 ms 173660 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 223 ms 99252 KB Output is correct
2 Correct 173 ms 99192 KB Output is correct
3 Correct 188 ms 99064 KB Output is correct
4 Correct 168 ms 99064 KB Output is correct
5 Correct 159 ms 99064 KB Output is correct
6 Correct 187 ms 99192 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 97416 KB Output is correct
2 Correct 63 ms 97400 KB Output is correct
3 Correct 59 ms 97420 KB Output is correct
4 Correct 55 ms 97400 KB Output is correct
5 Correct 57 ms 97400 KB Output is correct
6 Correct 54 ms 97400 KB Output is correct
7 Correct 54 ms 97400 KB Output is correct
8 Correct 487 ms 215824 KB Output is correct
9 Correct 504 ms 209860 KB Output is correct
10 Correct 534 ms 214008 KB Output is correct
11 Correct 472 ms 208744 KB Output is correct
12 Correct 412 ms 225732 KB Output is correct
13 Correct 423 ms 227584 KB Output is correct
14 Correct 385 ms 121848 KB Output is correct
15 Correct 576 ms 190712 KB Output is correct
16 Correct 535 ms 177528 KB Output is correct
17 Correct 398 ms 173660 KB Output is correct
18 Correct 223 ms 99252 KB Output is correct
19 Correct 173 ms 99192 KB Output is correct
20 Correct 188 ms 99064 KB Output is correct
21 Correct 168 ms 99064 KB Output is correct
22 Correct 159 ms 99064 KB Output is correct
23 Correct 187 ms 99192 KB Output is correct
24 Correct 537 ms 196480 KB Output is correct
25 Correct 600 ms 196728 KB Output is correct
26 Correct 501 ms 195576 KB Output is correct
27 Correct 506 ms 195320 KB Output is correct
28 Correct 665 ms 132952 KB Output is correct
29 Correct 499 ms 110692 KB Output is correct