답안 #270583

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
270583	2020-08-17T18:50:59 Z	test2	Boat (APIO16_boat)	C++14	100 / 100	654 ms	10352 KB

boat

#include<bits/stdc++.h>

#define I inline void 

using ll = long long ; 
using ld = long double ; 

using namespace std ; 

const int N = 1e6 + 7 , mod = 1e9+7 ;  

// how interesting!

int n , m; 
vector<int> lst ; 
int L[N] , R[N] , S[N] ; 
int dp[1001][501] ;

ll faspow(ll x , ll y){
	if(!y)return 1ll ; 
	ll ret = faspow(x , y/2) ; 
	ret = 1ll * ret *ret %mod ;
	if(y&1)ret = 1ll * ret * x %mod ;
	return ret ; 
}

ll inv[N] ; 

int main(){	
	ios_base::sync_with_stdio(0) ; 
	cin.tie(0) ; 
	//freopen("in.in" , "r" , stdin) ;  
	inv[1] = 1ll ; 
	for(int i = 2; i < N; i++) inv[i] = (mod/i) * (mod-inv[mod%i]) % mod;

		cin >> n ; 
	for(int i = 1 ;i <= n;i++){
		cin >> L[i] >> R[i] ; 
		R[i] ++ ;
		lst.push_back(L[i]) ; 
		lst.push_back(R[i]) ;
	}
	sort(lst.begin() , lst.end()) ; 
	lst.resize(unique(lst.begin() , lst.end()) - lst.begin()) ; 


	for(int i = 1 ;i <= n ;i++){
		L[i] = lower_bound(lst.begin() , lst.end() , L[i]) - lst.begin() + 1; 
		R[i] = lower_bound(lst.begin() , lst.end() , R[i]) - lst.begin() + 1;
	}

	int w = lst.size() ; 
	for(int i = 1 ;i < w ;i++){
		S[i] = lst[i] - lst[i-1] ; 
	}

	dp[0][0] = 1ll ;
	for(int i = 1 ;i < w ;i++){
		dp[i][0] = 1ll ; 

		for(int j = 1 ;j <=n ;j++){
			int count = 1; 
			ll mul = S[i] ; 

			dp[i][j] = dp[i-1][j] ; 

			if(i < L[j] || i >= R[j])
				continue ; 

			for(int k = j -1 ; k >= 0 ; k --){
				dp[i][j] = (dp[i][j] + (mul * dp[i-1][k]) %mod  ) %mod ; 
				if(L[k] <= i && R[k] > i){

					mul = 1ll * mul * (S[i] + count) %mod ; 
					mul = 1ll * mul * inv[count +1] %mod ; 

					count ++ ;
				}	
			}
		}
	}


	ll ans = 0ll ; 
	for(int i = 1 ; i<=n ;i++){
		ans = (ans + dp[w-1][i]) %mod ; 
	}
	cout<< ans ; 
	return 0 ; 
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	10104 KB	Output is correct
2	Correct	25 ms	10112 KB	Output is correct
3	Correct	30 ms	10128 KB	Output is correct
4	Correct	29 ms	10112 KB	Output is correct
5	Correct	31 ms	10104 KB	Output is correct
6	Correct	25 ms	10112 KB	Output is correct
7	Correct	25 ms	10104 KB	Output is correct
8	Correct	30 ms	10112 KB	Output is correct
9	Correct	27 ms	10104 KB	Output is correct
10	Correct	29 ms	10112 KB	Output is correct
11	Correct	28 ms	10112 KB	Output is correct
12	Correct	29 ms	10104 KB	Output is correct
13	Correct	26 ms	10108 KB	Output is correct
14	Correct	30 ms	10104 KB	Output is correct
15	Correct	34 ms	10104 KB	Output is correct
16	Correct	25 ms	8576 KB	Output is correct
17	Correct	25 ms	8568 KB	Output is correct
18	Correct	25 ms	8576 KB	Output is correct
19	Correct	26 ms	8568 KB	Output is correct
20	Correct	29 ms	8568 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	10104 KB	Output is correct
2	Correct	25 ms	10112 KB	Output is correct
3	Correct	30 ms	10128 KB	Output is correct
4	Correct	29 ms	10112 KB	Output is correct
5	Correct	31 ms	10104 KB	Output is correct
6	Correct	25 ms	10112 KB	Output is correct
7	Correct	25 ms	10104 KB	Output is correct
8	Correct	30 ms	10112 KB	Output is correct
9	Correct	27 ms	10104 KB	Output is correct
10	Correct	29 ms	10112 KB	Output is correct
11	Correct	28 ms	10112 KB	Output is correct
12	Correct	29 ms	10104 KB	Output is correct
13	Correct	26 ms	10108 KB	Output is correct
14	Correct	30 ms	10104 KB	Output is correct
15	Correct	34 ms	10104 KB	Output is correct
16	Correct	25 ms	8576 KB	Output is correct
17	Correct	25 ms	8568 KB	Output is correct
18	Correct	25 ms	8576 KB	Output is correct
19	Correct	26 ms	8568 KB	Output is correct
20	Correct	29 ms	8568 KB	Output is correct
21	Correct	332 ms	9920 KB	Output is correct
22	Correct	323 ms	9976 KB	Output is correct
23	Correct	308 ms	9976 KB	Output is correct
24	Correct	348 ms	9972 KB	Output is correct
25	Correct	341 ms	9884 KB	Output is correct
26	Correct	581 ms	9960 KB	Output is correct
27	Correct	589 ms	10104 KB	Output is correct
28	Correct	552 ms	9848 KB	Output is correct
29	Correct	552 ms	10052 KB	Output is correct
30	Correct	26 ms	10104 KB	Output is correct
31	Correct	28 ms	10104 KB	Output is correct
32	Correct	29 ms	10232 KB	Output is correct
33	Correct	27 ms	10104 KB	Output is correct
34	Correct	28 ms	10112 KB	Output is correct
35	Correct	27 ms	10112 KB	Output is correct
36	Correct	26 ms	10104 KB	Output is correct
37	Correct	26 ms	10112 KB	Output is correct
38	Correct	30 ms	10112 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	8568 KB	Output is correct
2	Correct	24 ms	8576 KB	Output is correct
3	Correct	24 ms	8576 KB	Output is correct
4	Correct	25 ms	8576 KB	Output is correct
5	Correct	25 ms	8576 KB	Output is correct
6	Correct	28 ms	8576 KB	Output is correct
7	Correct	26 ms	8576 KB	Output is correct
8	Correct	28 ms	8576 KB	Output is correct
9	Correct	27 ms	8568 KB	Output is correct
10	Correct	27 ms	8568 KB	Output is correct
11	Correct	24 ms	8576 KB	Output is correct
12	Correct	26 ms	8576 KB	Output is correct
13	Correct	24 ms	8576 KB	Output is correct
14	Correct	24 ms	8576 KB	Output is correct
15	Correct	25 ms	8576 KB	Output is correct
16	Correct	23 ms	8448 KB	Output is correct
17	Correct	25 ms	8440 KB	Output is correct
18	Correct	25 ms	8448 KB	Output is correct
19	Correct	24 ms	8448 KB	Output is correct
20	Correct	28 ms	8440 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	10104 KB	Output is correct
2	Correct	25 ms	10112 KB	Output is correct
3	Correct	30 ms	10128 KB	Output is correct
4	Correct	29 ms	10112 KB	Output is correct
5	Correct	31 ms	10104 KB	Output is correct
6	Correct	25 ms	10112 KB	Output is correct
7	Correct	25 ms	10104 KB	Output is correct
8	Correct	30 ms	10112 KB	Output is correct
9	Correct	27 ms	10104 KB	Output is correct
10	Correct	29 ms	10112 KB	Output is correct
11	Correct	28 ms	10112 KB	Output is correct
12	Correct	29 ms	10104 KB	Output is correct
13	Correct	26 ms	10108 KB	Output is correct
14	Correct	30 ms	10104 KB	Output is correct
15	Correct	34 ms	10104 KB	Output is correct
16	Correct	25 ms	8576 KB	Output is correct
17	Correct	25 ms	8568 KB	Output is correct
18	Correct	25 ms	8576 KB	Output is correct
19	Correct	26 ms	8568 KB	Output is correct
20	Correct	29 ms	8568 KB	Output is correct
21	Correct	332 ms	9920 KB	Output is correct
22	Correct	323 ms	9976 KB	Output is correct
23	Correct	308 ms	9976 KB	Output is correct
24	Correct	348 ms	9972 KB	Output is correct
25	Correct	341 ms	9884 KB	Output is correct
26	Correct	581 ms	9960 KB	Output is correct
27	Correct	589 ms	10104 KB	Output is correct
28	Correct	552 ms	9848 KB	Output is correct
29	Correct	552 ms	10052 KB	Output is correct
30	Correct	26 ms	10104 KB	Output is correct
31	Correct	28 ms	10104 KB	Output is correct
32	Correct	29 ms	10232 KB	Output is correct
33	Correct	27 ms	10104 KB	Output is correct
34	Correct	28 ms	10112 KB	Output is correct
35	Correct	27 ms	10112 KB	Output is correct
36	Correct	26 ms	10104 KB	Output is correct
37	Correct	26 ms	10112 KB	Output is correct
38	Correct	30 ms	10112 KB	Output is correct
39	Correct	24 ms	8568 KB	Output is correct
40	Correct	24 ms	8576 KB	Output is correct
41	Correct	24 ms	8576 KB	Output is correct
42	Correct	25 ms	8576 KB	Output is correct
43	Correct	25 ms	8576 KB	Output is correct
44	Correct	28 ms	8576 KB	Output is correct
45	Correct	26 ms	8576 KB	Output is correct
46	Correct	28 ms	8576 KB	Output is correct
47	Correct	27 ms	8568 KB	Output is correct
48	Correct	27 ms	8568 KB	Output is correct
49	Correct	24 ms	8576 KB	Output is correct
50	Correct	26 ms	8576 KB	Output is correct
51	Correct	24 ms	8576 KB	Output is correct
52	Correct	24 ms	8576 KB	Output is correct
53	Correct	25 ms	8576 KB	Output is correct
54	Correct	23 ms	8448 KB	Output is correct
55	Correct	25 ms	8440 KB	Output is correct
56	Correct	25 ms	8448 KB	Output is correct
57	Correct	24 ms	8448 KB	Output is correct
58	Correct	28 ms	8440 KB	Output is correct
59	Correct	348 ms	10104 KB	Output is correct
60	Correct	338 ms	10104 KB	Output is correct
61	Correct	319 ms	10304 KB	Output is correct
62	Correct	357 ms	10232 KB	Output is correct
63	Correct	342 ms	10232 KB	Output is correct
64	Correct	632 ms	10104 KB	Output is correct
65	Correct	630 ms	10268 KB	Output is correct
66	Correct	653 ms	10352 KB	Output is correct
67	Correct	654 ms	10232 KB	Output is correct
68	Correct	634 ms	10104 KB	Output is correct
69	Correct	295 ms	10104 KB	Output is correct
70	Correct	286 ms	10108 KB	Output is correct
71	Correct	286 ms	10208 KB	Output is correct
72	Correct	296 ms	10104 KB	Output is correct
73	Correct	302 ms	10232 KB	Output is correct
74	Correct	90 ms	8568 KB	Output is correct
75	Correct	84 ms	8572 KB	Output is correct
76	Correct	94 ms	8696 KB	Output is correct
77	Correct	87 ms	8568 KB	Output is correct
78	Correct	90 ms	8696 KB	Output is correct

답안 #270583

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