답안 #392126

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
392126	2021-04-20T14:21:45 Z	soroush	Boat (APIO16_boat)	C++17	100 / 100	579 ms	4428 KB

boat

//曇り空 のぞいた予感
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int , int> pii;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int maxn = 1010;
const ll mod = 1e9+7;

#define pb push_back
#define endl '\n'
#define dokme(x) cout << x , exit(0)
#define ms(x , y) memset(x , y , sizeof x)
ll pw(ll a, ll b, ll md = mod){ll res = 1;while(b){if(b&1){res=(a*res)%md;}a=(a*a)%md;b>>=1;}return(res);}

vector < int > vec;
int n , m , inv[maxn];
int l[maxn] , r[maxn];
int dp[maxn][maxn*2];
int ans;

int32_t main(){
	ios::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	for(int i = 1 ; i < maxn ; i ++)inv[i] = pw(i , mod - 2);
	cin >> n;
	for(int i = 1 ; i <= n ; i ++)
		cin >> l[i] >> r[i] , r[i]++ , vec.pb(l[i]) , vec.pb(r[i]);
	sort(vec.begin() , vec.end());
	vec.resize(unique(vec.begin() , vec.end()) - vec.begin());
	m = vec.size();
	for(int i = 0 ; i < m ; i ++)dp[0][i] = 1;
	for(int i = 1 ; i <= n ; i ++)
		l[i] = lower_bound(vec.begin() , vec.end() , l[i])-vec.begin()+1, 
		r[i] = lower_bound(vec.begin() , vec.end() , r[i])-vec.begin()+1;
	for(int i = 1 ; i <= n ; i ++){
		for(int j = l[i] ; j < r[i] ; j ++){
			ll C = vec[j]-vec[j-1];
			ll x = vec[j]-vec[j-1], y = 1;
			for(int k = i-1 ; k >= 0 ; k --){
				dp[i][j] = (dp[i][j] + (dp[k][j-1] * 1ll * C)%mod)%mod;
				if(l[k] <= j and j < r[k]){
					x++ , ++y;
					C = (C * ((x * inv[y])%mod))%mod;
				}
			}	
		}
		for(int j = 0 ; j < m ; j ++)dp[i][j] = (dp[i][j] + dp[i][j-1])%mod;
		ans = (ans + dp[i][m-1])%mod;
	}
	cout << ans;
	return(0);
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	4300 KB	Output is correct
2	Correct	8 ms	4300 KB	Output is correct
3	Correct	8 ms	4312 KB	Output is correct
4	Correct	8 ms	4316 KB	Output is correct
5	Correct	8 ms	4300 KB	Output is correct
6	Correct	9 ms	4300 KB	Output is correct
7	Correct	8 ms	4316 KB	Output is correct
8	Correct	8 ms	4316 KB	Output is correct
9	Correct	8 ms	4300 KB	Output is correct
10	Correct	8 ms	4300 KB	Output is correct
11	Correct	8 ms	4300 KB	Output is correct
12	Correct	8 ms	4264 KB	Output is correct
13	Correct	8 ms	4316 KB	Output is correct
14	Correct	8 ms	4316 KB	Output is correct
15	Correct	8 ms	4228 KB	Output is correct
16	Correct	4 ms	2636 KB	Output is correct
17	Correct	4 ms	2636 KB	Output is correct
18	Correct	4 ms	2636 KB	Output is correct
19	Correct	4 ms	2636 KB	Output is correct
20	Correct	4 ms	2636 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	4300 KB	Output is correct
2	Correct	8 ms	4300 KB	Output is correct
3	Correct	8 ms	4312 KB	Output is correct
4	Correct	8 ms	4316 KB	Output is correct
5	Correct	8 ms	4300 KB	Output is correct
6	Correct	9 ms	4300 KB	Output is correct
7	Correct	8 ms	4316 KB	Output is correct
8	Correct	8 ms	4316 KB	Output is correct
9	Correct	8 ms	4300 KB	Output is correct
10	Correct	8 ms	4300 KB	Output is correct
11	Correct	8 ms	4300 KB	Output is correct
12	Correct	8 ms	4264 KB	Output is correct
13	Correct	8 ms	4316 KB	Output is correct
14	Correct	8 ms	4316 KB	Output is correct
15	Correct	8 ms	4228 KB	Output is correct
16	Correct	4 ms	2636 KB	Output is correct
17	Correct	4 ms	2636 KB	Output is correct
18	Correct	4 ms	2636 KB	Output is correct
19	Correct	4 ms	2636 KB	Output is correct
20	Correct	4 ms	2636 KB	Output is correct
21	Correct	330 ms	4128 KB	Output is correct
22	Correct	331 ms	4088 KB	Output is correct
23	Correct	298 ms	4044 KB	Output is correct
24	Correct	350 ms	3996 KB	Output is correct
25	Correct	316 ms	4284 KB	Output is correct
26	Correct	490 ms	4012 KB	Output is correct
27	Correct	500 ms	4036 KB	Output is correct
28	Correct	492 ms	4036 KB	Output is correct
29	Correct	523 ms	4036 KB	Output is correct
30	Correct	9 ms	4304 KB	Output is correct
31	Correct	9 ms	4300 KB	Output is correct
32	Correct	9 ms	4304 KB	Output is correct
33	Correct	9 ms	4300 KB	Output is correct
34	Correct	9 ms	4300 KB	Output is correct
35	Correct	10 ms	4428 KB	Output is correct
36	Correct	11 ms	4284 KB	Output is correct
37	Correct	10 ms	4208 KB	Output is correct
38	Correct	10 ms	4300 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	716 KB	Output is correct
2	Correct	4 ms	716 KB	Output is correct
3	Correct	4 ms	716 KB	Output is correct
4	Correct	4 ms	716 KB	Output is correct
5	Correct	4 ms	716 KB	Output is correct
6	Correct	6 ms	716 KB	Output is correct
7	Correct	6 ms	716 KB	Output is correct
8	Correct	6 ms	716 KB	Output is correct
9	Correct	6 ms	716 KB	Output is correct
10	Correct	6 ms	716 KB	Output is correct
11	Correct	4 ms	716 KB	Output is correct
12	Correct	3 ms	716 KB	Output is correct
13	Correct	4 ms	716 KB	Output is correct
14	Correct	3 ms	716 KB	Output is correct
15	Correct	4 ms	716 KB	Output is correct
16	Correct	3 ms	716 KB	Output is correct
17	Correct	3 ms	716 KB	Output is correct
18	Correct	3 ms	716 KB	Output is correct
19	Correct	3 ms	716 KB	Output is correct
20	Correct	3 ms	720 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	4300 KB	Output is correct
2	Correct	8 ms	4300 KB	Output is correct
3	Correct	8 ms	4312 KB	Output is correct
4	Correct	8 ms	4316 KB	Output is correct
5	Correct	8 ms	4300 KB	Output is correct
6	Correct	9 ms	4300 KB	Output is correct
7	Correct	8 ms	4316 KB	Output is correct
8	Correct	8 ms	4316 KB	Output is correct
9	Correct	8 ms	4300 KB	Output is correct
10	Correct	8 ms	4300 KB	Output is correct
11	Correct	8 ms	4300 KB	Output is correct
12	Correct	8 ms	4264 KB	Output is correct
13	Correct	8 ms	4316 KB	Output is correct
14	Correct	8 ms	4316 KB	Output is correct
15	Correct	8 ms	4228 KB	Output is correct
16	Correct	4 ms	2636 KB	Output is correct
17	Correct	4 ms	2636 KB	Output is correct
18	Correct	4 ms	2636 KB	Output is correct
19	Correct	4 ms	2636 KB	Output is correct
20	Correct	4 ms	2636 KB	Output is correct
21	Correct	330 ms	4128 KB	Output is correct
22	Correct	331 ms	4088 KB	Output is correct
23	Correct	298 ms	4044 KB	Output is correct
24	Correct	350 ms	3996 KB	Output is correct
25	Correct	316 ms	4284 KB	Output is correct
26	Correct	490 ms	4012 KB	Output is correct
27	Correct	500 ms	4036 KB	Output is correct
28	Correct	492 ms	4036 KB	Output is correct
29	Correct	523 ms	4036 KB	Output is correct
30	Correct	9 ms	4304 KB	Output is correct
31	Correct	9 ms	4300 KB	Output is correct
32	Correct	9 ms	4304 KB	Output is correct
33	Correct	9 ms	4300 KB	Output is correct
34	Correct	9 ms	4300 KB	Output is correct
35	Correct	10 ms	4428 KB	Output is correct
36	Correct	11 ms	4284 KB	Output is correct
37	Correct	10 ms	4208 KB	Output is correct
38	Correct	10 ms	4300 KB	Output is correct
39	Correct	4 ms	716 KB	Output is correct
40	Correct	4 ms	716 KB	Output is correct
41	Correct	4 ms	716 KB	Output is correct
42	Correct	4 ms	716 KB	Output is correct
43	Correct	4 ms	716 KB	Output is correct
44	Correct	6 ms	716 KB	Output is correct
45	Correct	6 ms	716 KB	Output is correct
46	Correct	6 ms	716 KB	Output is correct
47	Correct	6 ms	716 KB	Output is correct
48	Correct	6 ms	716 KB	Output is correct
49	Correct	4 ms	716 KB	Output is correct
50	Correct	3 ms	716 KB	Output is correct
51	Correct	4 ms	716 KB	Output is correct
52	Correct	3 ms	716 KB	Output is correct
53	Correct	4 ms	716 KB	Output is correct
54	Correct	3 ms	716 KB	Output is correct
55	Correct	3 ms	716 KB	Output is correct
56	Correct	3 ms	716 KB	Output is correct
57	Correct	3 ms	716 KB	Output is correct
58	Correct	3 ms	720 KB	Output is correct
59	Correct	357 ms	4236 KB	Output is correct
60	Correct	342 ms	4192 KB	Output is correct
61	Correct	315 ms	4192 KB	Output is correct
62	Correct	365 ms	4308 KB	Output is correct
63	Correct	345 ms	4292 KB	Output is correct
64	Correct	562 ms	4372 KB	Output is correct
65	Correct	569 ms	4244 KB	Output is correct
66	Correct	579 ms	4388 KB	Output is correct
67	Correct	560 ms	4320 KB	Output is correct
68	Correct	576 ms	4356 KB	Output is correct
69	Correct	280 ms	4292 KB	Output is correct
70	Correct	277 ms	4332 KB	Output is correct
71	Correct	277 ms	4296 KB	Output is correct
72	Correct	291 ms	4292 KB	Output is correct
73	Correct	292 ms	4200 KB	Output is correct
74	Correct	74 ms	2696 KB	Output is correct
75	Correct	70 ms	2632 KB	Output is correct
76	Correct	76 ms	2772 KB	Output is correct
77	Correct	75 ms	2632 KB	Output is correct
78	Correct	75 ms	2692 KB	Output is correct

답안 #392126

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