답안 #270546

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
270546	2020-08-17T18:01:11 Z	test2	Boat (APIO16_boat)	C++14	100 / 100	644 ms	10360 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	26 ms	10104 KB	Output is correct
2	Correct	24 ms	10104 KB	Output is correct
3	Correct	26 ms	10112 KB	Output is correct
4	Correct	27 ms	10104 KB	Output is correct
5	Correct	27 ms	10360 KB	Output is correct
6	Correct	27 ms	10108 KB	Output is correct
7	Correct	26 ms	10108 KB	Output is correct
8	Correct	28 ms	10104 KB	Output is correct
9	Correct	31 ms	10112 KB	Output is correct
10	Correct	25 ms	10272 KB	Output is correct
11	Correct	27 ms	10112 KB	Output is correct
12	Correct	30 ms	10104 KB	Output is correct
13	Correct	31 ms	10240 KB	Output is correct
14	Correct	30 ms	10108 KB	Output is correct
15	Correct	31 ms	10112 KB	Output is correct
16	Correct	29 ms	8576 KB	Output is correct
17	Correct	25 ms	8568 KB	Output is correct
18	Correct	23 ms	8576 KB	Output is correct
19	Correct	23 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	26 ms	10104 KB	Output is correct
2	Correct	24 ms	10104 KB	Output is correct
3	Correct	26 ms	10112 KB	Output is correct
4	Correct	27 ms	10104 KB	Output is correct
5	Correct	27 ms	10360 KB	Output is correct
6	Correct	27 ms	10108 KB	Output is correct
7	Correct	26 ms	10108 KB	Output is correct
8	Correct	28 ms	10104 KB	Output is correct
9	Correct	31 ms	10112 KB	Output is correct
10	Correct	25 ms	10272 KB	Output is correct
11	Correct	27 ms	10112 KB	Output is correct
12	Correct	30 ms	10104 KB	Output is correct
13	Correct	31 ms	10240 KB	Output is correct
14	Correct	30 ms	10108 KB	Output is correct
15	Correct	31 ms	10112 KB	Output is correct
16	Correct	29 ms	8576 KB	Output is correct
17	Correct	25 ms	8568 KB	Output is correct
18	Correct	23 ms	8576 KB	Output is correct
19	Correct	23 ms	8568 KB	Output is correct
20	Correct	29 ms	8568 KB	Output is correct
21	Correct	331 ms	10152 KB	Output is correct
22	Correct	319 ms	9976 KB	Output is correct
23	Correct	288 ms	9916 KB	Output is correct
24	Correct	314 ms	10116 KB	Output is correct
25	Correct	314 ms	10104 KB	Output is correct
26	Correct	550 ms	9976 KB	Output is correct
27	Correct	568 ms	10104 KB	Output is correct
28	Correct	556 ms	10104 KB	Output is correct
29	Correct	561 ms	10028 KB	Output is correct
30	Correct	27 ms	10232 KB	Output is correct
31	Correct	32 ms	10156 KB	Output is correct
32	Correct	30 ms	10104 KB	Output is correct
33	Correct	27 ms	10112 KB	Output is correct
34	Correct	27 ms	10104 KB	Output is correct
35	Correct	30 ms	10132 KB	Output is correct
36	Correct	29 ms	10112 KB	Output is correct
37	Correct	31 ms	10104 KB	Output is correct
38	Correct	28 ms	10112 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	8576 KB	Output is correct
2	Correct	26 ms	8568 KB	Output is correct
3	Correct	26 ms	8576 KB	Output is correct
4	Correct	26 ms	8568 KB	Output is correct
5	Correct	27 ms	8576 KB	Output is correct
6	Correct	32 ms	8576 KB	Output is correct
7	Correct	27 ms	8568 KB	Output is correct
8	Correct	26 ms	8568 KB	Output is correct
9	Correct	27 ms	8568 KB	Output is correct
10	Correct	26 ms	8576 KB	Output is correct
11	Correct	25 ms	8576 KB	Output is correct
12	Correct	26 ms	8576 KB	Output is correct
13	Correct	25 ms	8568 KB	Output is correct
14	Correct	24 ms	8568 KB	Output is correct
15	Correct	24 ms	8568 KB	Output is correct
16	Correct	25 ms	8448 KB	Output is correct
17	Correct	26 ms	8440 KB	Output is correct
18	Correct	23 ms	8448 KB	Output is correct
19	Correct	23 ms	8440 KB	Output is correct
20	Correct	23 ms	8448 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	10104 KB	Output is correct
2	Correct	24 ms	10104 KB	Output is correct
3	Correct	26 ms	10112 KB	Output is correct
4	Correct	27 ms	10104 KB	Output is correct
5	Correct	27 ms	10360 KB	Output is correct
6	Correct	27 ms	10108 KB	Output is correct
7	Correct	26 ms	10108 KB	Output is correct
8	Correct	28 ms	10104 KB	Output is correct
9	Correct	31 ms	10112 KB	Output is correct
10	Correct	25 ms	10272 KB	Output is correct
11	Correct	27 ms	10112 KB	Output is correct
12	Correct	30 ms	10104 KB	Output is correct
13	Correct	31 ms	10240 KB	Output is correct
14	Correct	30 ms	10108 KB	Output is correct
15	Correct	31 ms	10112 KB	Output is correct
16	Correct	29 ms	8576 KB	Output is correct
17	Correct	25 ms	8568 KB	Output is correct
18	Correct	23 ms	8576 KB	Output is correct
19	Correct	23 ms	8568 KB	Output is correct
20	Correct	29 ms	8568 KB	Output is correct
21	Correct	331 ms	10152 KB	Output is correct
22	Correct	319 ms	9976 KB	Output is correct
23	Correct	288 ms	9916 KB	Output is correct
24	Correct	314 ms	10116 KB	Output is correct
25	Correct	314 ms	10104 KB	Output is correct
26	Correct	550 ms	9976 KB	Output is correct
27	Correct	568 ms	10104 KB	Output is correct
28	Correct	556 ms	10104 KB	Output is correct
29	Correct	561 ms	10028 KB	Output is correct
30	Correct	27 ms	10232 KB	Output is correct
31	Correct	32 ms	10156 KB	Output is correct
32	Correct	30 ms	10104 KB	Output is correct
33	Correct	27 ms	10112 KB	Output is correct
34	Correct	27 ms	10104 KB	Output is correct
35	Correct	30 ms	10132 KB	Output is correct
36	Correct	29 ms	10112 KB	Output is correct
37	Correct	31 ms	10104 KB	Output is correct
38	Correct	28 ms	10112 KB	Output is correct
39	Correct	26 ms	8576 KB	Output is correct
40	Correct	26 ms	8568 KB	Output is correct
41	Correct	26 ms	8576 KB	Output is correct
42	Correct	26 ms	8568 KB	Output is correct
43	Correct	27 ms	8576 KB	Output is correct
44	Correct	32 ms	8576 KB	Output is correct
45	Correct	27 ms	8568 KB	Output is correct
46	Correct	26 ms	8568 KB	Output is correct
47	Correct	27 ms	8568 KB	Output is correct
48	Correct	26 ms	8576 KB	Output is correct
49	Correct	25 ms	8576 KB	Output is correct
50	Correct	26 ms	8576 KB	Output is correct
51	Correct	25 ms	8568 KB	Output is correct
52	Correct	24 ms	8568 KB	Output is correct
53	Correct	24 ms	8568 KB	Output is correct
54	Correct	25 ms	8448 KB	Output is correct
55	Correct	26 ms	8440 KB	Output is correct
56	Correct	23 ms	8448 KB	Output is correct
57	Correct	23 ms	8440 KB	Output is correct
58	Correct	23 ms	8448 KB	Output is correct
59	Correct	351 ms	10200 KB	Output is correct
60	Correct	330 ms	10192 KB	Output is correct
61	Correct	313 ms	10360 KB	Output is correct
62	Correct	350 ms	10232 KB	Output is correct
63	Correct	340 ms	10360 KB	Output is correct
64	Correct	633 ms	10292 KB	Output is correct
65	Correct	633 ms	10272 KB	Output is correct
66	Correct	644 ms	10232 KB	Output is correct
67	Correct	634 ms	10104 KB	Output is correct
68	Correct	637 ms	10104 KB	Output is correct
69	Correct	289 ms	10232 KB	Output is correct
70	Correct	285 ms	10104 KB	Output is correct
71	Correct	286 ms	10220 KB	Output is correct
72	Correct	294 ms	10132 KB	Output is correct
73	Correct	303 ms	10108 KB	Output is correct
74	Correct	85 ms	8568 KB	Output is correct
75	Correct	90 ms	8568 KB	Output is correct
76	Correct	89 ms	8568 KB	Output is correct
77	Correct	92 ms	8568 KB	Output is correct
78	Correct	91 ms	8568 KB	Output is correct

답안 #270546

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