답안 #302585

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
302585	2020-09-18T20:30:04 Z	CSQ31	Boat (APIO16_boat)	C++14	100 / 100	537 ms	4608 KB

boat

#pragma GCC optimize("Ofast") 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define sz(a) (int)(a.size())
#define all(a) a.begin(),a.end()
#define lb lower_bound
#define ub upper_bound
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
#define MOD (ll)(1e9+7)
#define INF (ll)(1e18)
#define debug(...) fprintf(stderr, __VA_ARGS__),fflush(stderr)
#define time__(d) for(long blockTime = 0; (blockTime == 0 ? (blockTime=clock()) != 0 : false);\
debug("%s time : %.4fs\n", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))
typedef long long int ll;
typedef long double ld;
typedef pair<ll,ll> PII;
typedef pair<int,int> pii;
typedef vector<vector<int>> vii;
typedef vector<vector<ll>> VII;
ll gcd(ll a,ll b){if(!b)return a;else return gcd(b,a%b);}
ll A[550];
ll B[550];
ll len[1050];
ll inv[551];
ll dp[550][1050];
int main()
{
   inv[1] = 1;
   for (int i=2;i<550;i++) inv[i] = (ll)inv[MOD % i] * (MOD - MOD/i) % MOD;
   int n;
   cin>>n;
   vector<ll>coords;
   for(int i=1;i<=n;i++){
	   cin>>A[i];coords.pb(A[i]);
	   cin>>B[i];coords.pb(B[i]+1);
   }
   sort(all(coords));
   coords.resize(unique(all(coords))-coords.begin());
   for(int i=1;i<=n;i++){
	   A[i] = ub(all(coords),A[i])-coords.begin();
	   B[i] = ub(all(coords),B[i])-coords.begin();
   }
   for(int i=1;i<sz(coords);i++)len[i] = coords[i] - coords[i-1];   
   for(int i=0;i<sz(coords);i++)dp[0][i] = 1;
   for(int i=1;i<=n;i++){ 
	   for(int j=A[i];j<=B[i];j++){
		   dp[i][j] = (dp[i-1][j-1]*len[j])%MOD;
		   ll choose = len[j]-1;
		   ll cnt = 1;
		   for(int k=i-1;k>0;k--){
			   if(A[k] <= j && j <= B[k]){
				   cnt++;
				   choose = (choose*(len[j]+cnt-2))%MOD;
				   choose = (choose*inv[cnt])%MOD;
				   if(!choose)break;
				   dp[i][j]=(dp[i][j]+dp[k-1][j-1]*choose)%MOD;
			   }
			   
		   }
	   }
	   dp[i][0] = 1;
		   for(int j=1;j<sz(coords);j++){
			   dp[i][j]=(dp[i][j]+dp[i-1][j]+dp[i][j-1]-dp[i-1][j-1]+MOD)%MOD;
		   }	   
   }
   cout<<(dp[n][sz(coords)-1]+MOD-1)%MOD<<'\n';
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	4480 KB	Output is correct
2	Correct	7 ms	4480 KB	Output is correct
3	Correct	7 ms	4480 KB	Output is correct
4	Correct	7 ms	4480 KB	Output is correct
5	Correct	7 ms	4480 KB	Output is correct
6	Correct	7 ms	4480 KB	Output is correct
7	Correct	7 ms	4480 KB	Output is correct
8	Correct	7 ms	4480 KB	Output is correct
9	Correct	7 ms	4480 KB	Output is correct
10	Correct	7 ms	4480 KB	Output is correct
11	Correct	7 ms	4480 KB	Output is correct
12	Correct	7 ms	4480 KB	Output is correct
13	Correct	7 ms	4480 KB	Output is correct
14	Correct	7 ms	4480 KB	Output is correct
15	Correct	7 ms	4480 KB	Output is correct
16	Correct	3 ms	3072 KB	Output is correct
17	Correct	4 ms	3072 KB	Output is correct
18	Correct	3 ms	3072 KB	Output is correct
19	Correct	4 ms	3072 KB	Output is correct
20	Correct	3 ms	3072 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	4480 KB	Output is correct
2	Correct	7 ms	4480 KB	Output is correct
3	Correct	7 ms	4480 KB	Output is correct
4	Correct	7 ms	4480 KB	Output is correct
5	Correct	7 ms	4480 KB	Output is correct
6	Correct	7 ms	4480 KB	Output is correct
7	Correct	7 ms	4480 KB	Output is correct
8	Correct	7 ms	4480 KB	Output is correct
9	Correct	7 ms	4480 KB	Output is correct
10	Correct	7 ms	4480 KB	Output is correct
11	Correct	7 ms	4480 KB	Output is correct
12	Correct	7 ms	4480 KB	Output is correct
13	Correct	7 ms	4480 KB	Output is correct
14	Correct	7 ms	4480 KB	Output is correct
15	Correct	7 ms	4480 KB	Output is correct
16	Correct	3 ms	3072 KB	Output is correct
17	Correct	4 ms	3072 KB	Output is correct
18	Correct	3 ms	3072 KB	Output is correct
19	Correct	4 ms	3072 KB	Output is correct
20	Correct	3 ms	3072 KB	Output is correct
21	Correct	180 ms	4464 KB	Output is correct
22	Correct	168 ms	4432 KB	Output is correct
23	Correct	153 ms	4600 KB	Output is correct
24	Correct	175 ms	4420 KB	Output is correct
25	Correct	174 ms	4472 KB	Output is correct
26	Correct	364 ms	4472 KB	Output is correct
27	Correct	362 ms	4472 KB	Output is correct
28	Correct	381 ms	4472 KB	Output is correct
29	Correct	380 ms	4528 KB	Output is correct
30	Correct	7 ms	4608 KB	Output is correct
31	Correct	7 ms	4480 KB	Output is correct
32	Correct	7 ms	4480 KB	Output is correct
33	Correct	7 ms	4480 KB	Output is correct
34	Correct	8 ms	4480 KB	Output is correct
35	Correct	7 ms	4480 KB	Output is correct
36	Correct	8 ms	4480 KB	Output is correct
37	Correct	8 ms	4480 KB	Output is correct
38	Correct	8 ms	4480 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	896 KB	Output is correct
2	Correct	2 ms	896 KB	Output is correct
3	Correct	3 ms	896 KB	Output is correct
4	Correct	3 ms	1024 KB	Output is correct
5	Correct	3 ms	896 KB	Output is correct
6	Correct	5 ms	896 KB	Output is correct
7	Correct	5 ms	896 KB	Output is correct
8	Correct	5 ms	896 KB	Output is correct
9	Correct	5 ms	896 KB	Output is correct
10	Correct	5 ms	896 KB	Output is correct
11	Correct	3 ms	896 KB	Output is correct
12	Correct	3 ms	896 KB	Output is correct
13	Correct	3 ms	896 KB	Output is correct
14	Correct	3 ms	896 KB	Output is correct
15	Correct	3 ms	896 KB	Output is correct
16	Correct	2 ms	896 KB	Output is correct
17	Correct	2 ms	896 KB	Output is correct
18	Correct	2 ms	896 KB	Output is correct
19	Correct	2 ms	896 KB	Output is correct
20	Correct	3 ms	896 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	4480 KB	Output is correct
2	Correct	7 ms	4480 KB	Output is correct
3	Correct	7 ms	4480 KB	Output is correct
4	Correct	7 ms	4480 KB	Output is correct
5	Correct	7 ms	4480 KB	Output is correct
6	Correct	7 ms	4480 KB	Output is correct
7	Correct	7 ms	4480 KB	Output is correct
8	Correct	7 ms	4480 KB	Output is correct
9	Correct	7 ms	4480 KB	Output is correct
10	Correct	7 ms	4480 KB	Output is correct
11	Correct	7 ms	4480 KB	Output is correct
12	Correct	7 ms	4480 KB	Output is correct
13	Correct	7 ms	4480 KB	Output is correct
14	Correct	7 ms	4480 KB	Output is correct
15	Correct	7 ms	4480 KB	Output is correct
16	Correct	3 ms	3072 KB	Output is correct
17	Correct	4 ms	3072 KB	Output is correct
18	Correct	3 ms	3072 KB	Output is correct
19	Correct	4 ms	3072 KB	Output is correct
20	Correct	3 ms	3072 KB	Output is correct
21	Correct	180 ms	4464 KB	Output is correct
22	Correct	168 ms	4432 KB	Output is correct
23	Correct	153 ms	4600 KB	Output is correct
24	Correct	175 ms	4420 KB	Output is correct
25	Correct	174 ms	4472 KB	Output is correct
26	Correct	364 ms	4472 KB	Output is correct
27	Correct	362 ms	4472 KB	Output is correct
28	Correct	381 ms	4472 KB	Output is correct
29	Correct	380 ms	4528 KB	Output is correct
30	Correct	7 ms	4608 KB	Output is correct
31	Correct	7 ms	4480 KB	Output is correct
32	Correct	7 ms	4480 KB	Output is correct
33	Correct	7 ms	4480 KB	Output is correct
34	Correct	8 ms	4480 KB	Output is correct
35	Correct	7 ms	4480 KB	Output is correct
36	Correct	8 ms	4480 KB	Output is correct
37	Correct	8 ms	4480 KB	Output is correct
38	Correct	8 ms	4480 KB	Output is correct
39	Correct	3 ms	896 KB	Output is correct
40	Correct	2 ms	896 KB	Output is correct
41	Correct	3 ms	896 KB	Output is correct
42	Correct	3 ms	1024 KB	Output is correct
43	Correct	3 ms	896 KB	Output is correct
44	Correct	5 ms	896 KB	Output is correct
45	Correct	5 ms	896 KB	Output is correct
46	Correct	5 ms	896 KB	Output is correct
47	Correct	5 ms	896 KB	Output is correct
48	Correct	5 ms	896 KB	Output is correct
49	Correct	3 ms	896 KB	Output is correct
50	Correct	3 ms	896 KB	Output is correct
51	Correct	3 ms	896 KB	Output is correct
52	Correct	3 ms	896 KB	Output is correct
53	Correct	3 ms	896 KB	Output is correct
54	Correct	2 ms	896 KB	Output is correct
55	Correct	2 ms	896 KB	Output is correct
56	Correct	2 ms	896 KB	Output is correct
57	Correct	2 ms	896 KB	Output is correct
58	Correct	3 ms	896 KB	Output is correct
59	Correct	234 ms	4600 KB	Output is correct
60	Correct	213 ms	4472 KB	Output is correct
61	Correct	200 ms	4476 KB	Output is correct
62	Correct	237 ms	4600 KB	Output is correct
63	Correct	221 ms	4472 KB	Output is correct
64	Correct	535 ms	4560 KB	Output is correct
65	Correct	537 ms	4600 KB	Output is correct
66	Correct	530 ms	4472 KB	Output is correct
67	Correct	533 ms	4600 KB	Output is correct
68	Correct	536 ms	4600 KB	Output is correct
69	Correct	202 ms	4472 KB	Output is correct
70	Correct	207 ms	4480 KB	Output is correct
71	Correct	203 ms	4600 KB	Output is correct
72	Correct	214 ms	4472 KB	Output is correct
73	Correct	219 ms	4472 KB	Output is correct
74	Correct	28 ms	3192 KB	Output is correct
75	Correct	25 ms	3064 KB	Output is correct
76	Correct	27 ms	3064 KB	Output is correct
77	Correct	27 ms	3064 KB	Output is correct
78	Correct	28 ms	3064 KB	Output is correct

답안 #302585

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 22.0 / 22.0

Subtask #3 27.0 / 27.0

Subtask #4 42.0 / 42.0

Subtask #1
9.0 / 9.0

Subtask #2
22.0 / 22.0

Subtask #3
27.0 / 27.0

Subtask #4
42.0 / 42.0