답안 #69303 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
69303	2018-08-20T11:45:56 Z	FedericoS	Boat (APIO16_boat)	C++14	31 / 100	1718 ms	77956 KB

boat

#pragma GCC optimize("Ofast")
#include <iostream>
#include <unordered_map>
#include <map>
#include <vector>
#include <algorithm>
using namespace std;
typedef long long int ll;
typedef pair<ll,ll> pll;
 
ll M=1000000007;
int N;
ll X[505],Y[505];
vector<ll> DP[505];
ll ans;
ll R[4000006];
unordered_map<ll,ll> L;
vector<ll> V;
 
ll query(ll k, ll l, ll r, ll a, ll b){

	if(b<l or r<a) return 0;
	if(a<=l and r<=b) return R[k];
 
	ll m=(l+r)/2;
	return (query(2*k,l,m,a,b)+query(2*k+1,m+1,r,a,b))%M;
 
}
 
void insert(ll k, ll l, ll r, ll a, ll b){
 
	if(l==r) R[k]=(R[k]+b)%M;
	else{
 
		ll m=(l+r)/2;
		if(a<=m)
			insert(2*k,l,m,a,b);
		else
			insert(2*k+1,m+1,r,a,b);
		R[k]=(R[2*k]+R[2*k+1])%M;
 
	}
 
}
 
ll somma(ll a){
	return query(1,0,1e6+1,a,1e6);
}
 
void aggiungi(ll a, ll b){
	insert(1,0,1e6+1,a,b);
}
 
int main(){
 
	cin>>N;
	for(int i=0;i<N;i++)
		cin>>X[i]>>Y[i];

	for(int i=0;i<N;i++)
		DP[i].resize(Y[i]-X[i]+4);

	for(int i=0;i<N;i++)
		for(ll j=X[i];j<Y[i]+3;j++)
			V.push_back(j);

	sort(V.begin(),V.end());

	ll p=0;
	for(int i=0;i<V.size();i++)
		if(i==0 or V[i]!=V[i-1])
			L[V[i]]=p++;

	for(int i=0;i<N;i++){
		X[i]=L[X[i]];
		Y[i]=L[Y[i]];
	}

 
	for(int i=N-1;i>=0;i--)
		for(ll j=X[i],k=0;j<=Y[i];j++,k++){
			DP[i][k]=(somma(j+1)+1)%M;
			aggiungi(j,DP[i][k]);
			ans=(ans+DP[i][k])%M;
			//cout<<i<<" "<<j<<" "<<DP[{i,j}]<<endl;
		}
 
	//for(int i=0;i<10;i++)cout<<i<<" "<<S[i]<<endl;
 
	cout<<ans;
 
}
/*
3
1 1
2 2
3 3
*/

/*
8
10000 30000
20000 40000
30000 50000
40000 60000
50000 70000
60000 80000
70000 90000
80000 100000
*/

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:70:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<V.size();i++)
              ~^~~~~~~~~

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	504 KB	Output is correct
2	Correct	4 ms	616 KB	Output is correct
3	Correct	5 ms	672 KB	Output is correct
4	Correct	5 ms	852 KB	Output is correct
5	Correct	3 ms	852 KB	Output is correct
6	Correct	4 ms	852 KB	Output is correct
7	Correct	5 ms	852 KB	Output is correct
8	Correct	5 ms	852 KB	Output is correct
9	Correct	4 ms	852 KB	Output is correct
10	Correct	5 ms	852 KB	Output is correct
11	Correct	4 ms	852 KB	Output is correct
12	Correct	4 ms	852 KB	Output is correct
13	Correct	4 ms	852 KB	Output is correct
14	Correct	5 ms	852 KB	Output is correct
15	Correct	5 ms	852 KB	Output is correct
16	Correct	4 ms	852 KB	Output is correct
17	Correct	4 ms	852 KB	Output is correct
18	Correct	4 ms	852 KB	Output is correct
19	Correct	5 ms	852 KB	Output is correct
20	Correct	5 ms	852 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	504 KB	Output is correct
2	Correct	4 ms	616 KB	Output is correct
3	Correct	5 ms	672 KB	Output is correct
4	Correct	5 ms	852 KB	Output is correct
5	Correct	3 ms	852 KB	Output is correct
6	Correct	4 ms	852 KB	Output is correct
7	Correct	5 ms	852 KB	Output is correct
8	Correct	5 ms	852 KB	Output is correct
9	Correct	4 ms	852 KB	Output is correct
10	Correct	5 ms	852 KB	Output is correct
11	Correct	4 ms	852 KB	Output is correct
12	Correct	4 ms	852 KB	Output is correct
13	Correct	4 ms	852 KB	Output is correct
14	Correct	5 ms	852 KB	Output is correct
15	Correct	5 ms	852 KB	Output is correct
16	Correct	4 ms	852 KB	Output is correct
17	Correct	4 ms	852 KB	Output is correct
18	Correct	4 ms	852 KB	Output is correct
19	Correct	5 ms	852 KB	Output is correct
20	Correct	5 ms	852 KB	Output is correct
21	Correct	1255 ms	15828 KB	Output is correct
22	Correct	1267 ms	15828 KB	Output is correct
23	Correct	1225 ms	15828 KB	Output is correct
24	Correct	1287 ms	15952 KB	Output is correct
25	Correct	1367 ms	16208 KB	Output is correct
26	Correct	1427 ms	16412 KB	Output is correct
27	Correct	1496 ms	16592 KB	Output is correct
28	Correct	1477 ms	16592 KB	Output is correct
29	Correct	1425 ms	16692 KB	Output is correct
30	Correct	1682 ms	77860 KB	Output is correct
31	Correct	1634 ms	77860 KB	Output is correct
32	Correct	1550 ms	77956 KB	Output is correct
33	Correct	1547 ms	77956 KB	Output is correct
34	Correct	1620 ms	77956 KB	Output is correct
35	Correct	1556 ms	77956 KB	Output is correct
36	Correct	1587 ms	77956 KB	Output is correct
37	Correct	1718 ms	77956 KB	Output is correct
38	Correct	1490 ms	77956 KB	Output is correct

Subtask #3
0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Runtime error	8 ms	77956 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #4
0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	504 KB	Output is correct
2	Correct	4 ms	616 KB	Output is correct
3	Correct	5 ms	672 KB	Output is correct
4	Correct	5 ms	852 KB	Output is correct
5	Correct	3 ms	852 KB	Output is correct
6	Correct	4 ms	852 KB	Output is correct
7	Correct	5 ms	852 KB	Output is correct
8	Correct	5 ms	852 KB	Output is correct
9	Correct	4 ms	852 KB	Output is correct
10	Correct	5 ms	852 KB	Output is correct
11	Correct	4 ms	852 KB	Output is correct
12	Correct	4 ms	852 KB	Output is correct
13	Correct	4 ms	852 KB	Output is correct
14	Correct	5 ms	852 KB	Output is correct
15	Correct	5 ms	852 KB	Output is correct
16	Correct	4 ms	852 KB	Output is correct
17	Correct	4 ms	852 KB	Output is correct
18	Correct	4 ms	852 KB	Output is correct
19	Correct	5 ms	852 KB	Output is correct
20	Correct	5 ms	852 KB	Output is correct
21	Correct	1255 ms	15828 KB	Output is correct
22	Correct	1267 ms	15828 KB	Output is correct
23	Correct	1225 ms	15828 KB	Output is correct
24	Correct	1287 ms	15952 KB	Output is correct
25	Correct	1367 ms	16208 KB	Output is correct
26	Correct	1427 ms	16412 KB	Output is correct
27	Correct	1496 ms	16592 KB	Output is correct
28	Correct	1477 ms	16592 KB	Output is correct
29	Correct	1425 ms	16692 KB	Output is correct
30	Correct	1682 ms	77860 KB	Output is correct
31	Correct	1634 ms	77860 KB	Output is correct
32	Correct	1550 ms	77956 KB	Output is correct
33	Correct	1547 ms	77956 KB	Output is correct
34	Correct	1620 ms	77956 KB	Output is correct
35	Correct	1556 ms	77956 KB	Output is correct
36	Correct	1587 ms	77956 KB	Output is correct
37	Correct	1718 ms	77956 KB	Output is correct
38	Correct	1490 ms	77956 KB	Output is correct
39	Runtime error	8 ms	77956 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
40	Halted	0 ms	0 KB	-

답안 #69303

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 22.0 / 22.0

Subtask #3 0 / 27.0

Subtask #4 0 / 42.0

Subtask #1
9.0 / 9.0

Subtask #2
22.0 / 22.0

Subtask #3
0 / 27.0

Subtask #4
0 / 42.0