oj.uz

Submission #209582

# Submission time Handle Problem Language Result Execution time Memory
209582 2020-03-14T17:39:06 Z Lawliet Boat (APIO16_boat) C++14
31 / 100
 1238 ms 524292 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long int lli;

const int MAXN = 510;
const int MAXV = 1000000000;
const int MOD = 1000000007;

class SparseSegmentTree
{
	public:

		void create()
		{
			e.push_back( 0 );
			d.push_back( 0 );
			sum.push_back( 0 );
		}

		int getLeft(int node)
		{
			if( e[node] == 0 )
			{
				e[node] = ++cntNode;
				create();
			}

			return e[node];
		}

		int getRight(int node)
		{
			if( d[node] == 0 )
			{
				d[node] = ++cntNode;
				create();
			}

			return d[node];
		}

		void update(int node, int l, int r, int i, int v)
		{
			if( i < l || r < i ) return;

			if( l == r )
			{
				sum[node] += v;
				sum[node] %= MOD;

				return;
			}

			int m = ( l + r )/2;

			if( i <= m ) update( getLeft(node) , l , m , i , v );
			else update( getRight(node) , m + 1 , r , i , v );

			sum[node] = sum[ e[node] ] + sum[ d[node] ];
			sum[node] %= MOD;
		}

		int query(int node, int l, int r, int i, int j)
		{
			if( node == 0 ) return 0;
			if( j < l || r < i ) return 0;
			if( i <= l && r <= j ) return sum[node];

			int m = ( l + r )/2;

			int sumLeft = query( e[node] , l , m , i , j );
			int sumRight = query( d[node] , m + 1 , r , i , j );

			return ( sumLeft + sumRight )%MOD;
		}

		SparseSegmentTree() : cntNode(1) { create(); create(); }

	private:

		int cntNode;

		vector< int > e, d;
		vector< int > sum;
};

int n;

SparseSegmentTree SEG;

int main()
{
	scanf("%d",&n);

	SEG.update( 1 , 0 , MAXV , 0 , 1 );

	for(int i = 1 ; i <= n ; i++)
	{
		int l, r;
		scanf("%d %d",&l,&r);

		vector< int > aux;

		for(int j = l ; j <= r ; j++)
			aux.push_back( SEG.query( 1 , 0 , MAXV , 0 , j - 1 ) );

		for(int j = 0 ; j < aux.size() ; j++)
			SEG.update( 1 , 0 , MAXV , j + l , aux[j] );
	}

	printf("%d\n",SEG.query( 1 , 0 , MAXV , 1 , MAXV ));
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:108:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0 ; j < aux.size() ; j++)
                   ~~^~~~~~~~~~~~
boat.cpp:94:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
boat.cpp:101:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&l,&r);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 508 KB Output is correct
7 Correct 7 ms 504 KB Output is correct
8 Correct 6 ms 504 KB Output is correct
9 Correct 6 ms 504 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 7 ms 504 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 504 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 6 ms 380 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 6 ms 380 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 508 KB Output is correct
7 Correct 7 ms 504 KB Output is correct
8 Correct 6 ms 504 KB Output is correct
9 Correct 6 ms 504 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 7 ms 504 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 504 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 6 ms 380 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 6 ms 380 KB Output is correct
21 Correct 541 ms 504 KB Output is correct
22 Correct 540 ms 504 KB Output is correct
23 Correct 493 ms 632 KB Output is correct
24 Correct 559 ms 624 KB Output is correct
25 Correct 584 ms 632 KB Output is correct
26 Correct 603 ms 504 KB Output is correct
27 Correct 587 ms 500 KB Output is correct
28 Correct 598 ms 496 KB Output is correct
29 Correct 652 ms 376 KB Output is correct
30 Correct 534 ms 23792 KB Output is correct
31 Correct 525 ms 23560 KB Output is correct
32 Correct 550 ms 24072 KB Output is correct
33 Correct 520 ms 23172 KB Output is correct
34 Correct 522 ms 23560 KB Output is correct
35 Correct 492 ms 22380 KB Output is correct
36 Correct 525 ms 23040 KB Output is correct
37 Correct 538 ms 23304 KB Output is correct
38 Correct 493 ms 22540 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 1238 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 508 KB Output is correct
7 Correct 7 ms 504 KB Output is correct
8 Correct 6 ms 504 KB Output is correct
9 Correct 6 ms 504 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 6 ms 504 KB Output is correct
12 Correct 7 ms 504 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 504 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 6 ms 380 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 6 ms 380 KB Output is correct
21 Correct 541 ms 504 KB Output is correct
22 Correct 540 ms 504 KB Output is correct
23 Correct 493 ms 632 KB Output is correct
24 Correct 559 ms 624 KB Output is correct
25 Correct 584 ms 632 KB Output is correct
26 Correct 603 ms 504 KB Output is correct
27 Correct 587 ms 500 KB Output is correct
28 Correct 598 ms 496 KB Output is correct
29 Correct 652 ms 376 KB Output is correct
30 Correct 534 ms 23792 KB Output is correct
31 Correct 525 ms 23560 KB Output is correct
32 Correct 550 ms 24072 KB Output is correct
33 Correct 520 ms 23172 KB Output is correct
34 Correct 522 ms 23560 KB Output is correct
35 Correct 492 ms 22380 KB Output is correct
36 Correct 525 ms 23040 KB Output is correct
37 Correct 538 ms 23304 KB Output is correct
38 Correct 493 ms 22540 KB Output is correct
39 Runtime error 1238 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
40 Halted 0 ms 0 KB -