답안 #745237

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
745237	2023-05-19T15:20:22 Z	amirhoseinfar1385	Boat (APIO16_boat)	C++11	100 / 100	1734 ms	4428 KB

boat

#include<bits/stdc++.h>
using namespace std;
int mod=1e9+7;
const int maxn=501;
long long dp[maxn*2+10][maxn+2];
long long ps[maxn*2+10];
int rev[maxn+10];
pair<int,int>all[maxn+10];
vector<int>allind;

long long mypow(long long m,long long y){
	if(y==0){
		return 1;
	}
	long long p=mypow(m,(y>>1));
	p*=p;
	p%=mod;
	if(y&1){
		p*=m;
		p%=mod;
	}
	return p;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n;
	cin>>n;
	for(int i=0;i<=n+5;i++){
		rev[i]=mypow(i,mod-2);
	}
	for(int i=1;i<=n;i++){
		cin>>all[i].first>>all[i].second;
		allind.push_back(all[i].second);
		allind.push_back(all[i].first-1);
	}
	allind.push_back(0);
	sort(allind.begin(),allind.end());
	allind.resize(unique(allind.begin(),allind.end())-allind.begin());
	int sz=(int)allind.size()+1;
	dp[0][0]=1;
	for(int i=0;i<sz+10;i++){
		ps[i]=1;
	}
	for(int i=1;i<=n;i++){
		int l=lower_bound(allind.begin(),allind.end(),all[i].first)-allind.begin();
		int r=lower_bound(allind.begin(),allind.end(),all[i].second)-allind.begin();
		for(int j=l;j<=r;j++){
			int cnt=allind[j]-allind[j-1];
			for(int h=n;h>=2;h--){
				dp[j][h]=(dp[j][h]+dp[j][h-1]*(cnt-(h-1))%mod*rev[h])%mod;
			}
			dp[j][1]=(dp[j][1]+ps[j-1]*cnt)%mod;
		}
		ps[0]=dp[0][0];
		for(int i=1;i<=sz+9;i++){
			ps[i]=ps[i-1];
			for(int h=0;h<=n;h++){
				ps[i]+=dp[i][h];
			}
			ps[i]%=mod;
		}
	}
	long long res=ps[sz+8];
	res+=mod-1;
	res%=mod;
	cout<<res<<"\n";
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	131 ms	4172 KB	Output is correct
2	Correct	137 ms	4332 KB	Output is correct
3	Correct	134 ms	4224 KB	Output is correct
4	Correct	130 ms	4212 KB	Output is correct
5	Correct	133 ms	4172 KB	Output is correct
6	Correct	134 ms	4160 KB	Output is correct
7	Correct	133 ms	4160 KB	Output is correct
8	Correct	134 ms	4192 KB	Output is correct
9	Correct	134 ms	4172 KB	Output is correct
10	Correct	138 ms	4140 KB	Output is correct
11	Correct	133 ms	4172 KB	Output is correct
12	Correct	132 ms	4240 KB	Output is correct
13	Correct	132 ms	4172 KB	Output is correct
14	Correct	128 ms	4228 KB	Output is correct
15	Correct	139 ms	4172 KB	Output is correct
16	Correct	29 ms	980 KB	Output is correct
17	Correct	30 ms	1044 KB	Output is correct
18	Correct	28 ms	1036 KB	Output is correct
19	Correct	28 ms	1044 KB	Output is correct
20	Correct	29 ms	1048 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	131 ms	4172 KB	Output is correct
2	Correct	137 ms	4332 KB	Output is correct
3	Correct	134 ms	4224 KB	Output is correct
4	Correct	130 ms	4212 KB	Output is correct
5	Correct	133 ms	4172 KB	Output is correct
6	Correct	134 ms	4160 KB	Output is correct
7	Correct	133 ms	4160 KB	Output is correct
8	Correct	134 ms	4192 KB	Output is correct
9	Correct	134 ms	4172 KB	Output is correct
10	Correct	138 ms	4140 KB	Output is correct
11	Correct	133 ms	4172 KB	Output is correct
12	Correct	132 ms	4240 KB	Output is correct
13	Correct	132 ms	4172 KB	Output is correct
14	Correct	128 ms	4228 KB	Output is correct
15	Correct	139 ms	4172 KB	Output is correct
16	Correct	29 ms	980 KB	Output is correct
17	Correct	30 ms	1044 KB	Output is correct
18	Correct	28 ms	1036 KB	Output is correct
19	Correct	28 ms	1044 KB	Output is correct
20	Correct	29 ms	1048 KB	Output is correct
21	Correct	857 ms	4032 KB	Output is correct
22	Correct	843 ms	4076 KB	Output is correct
23	Correct	787 ms	4200 KB	Output is correct
24	Correct	875 ms	3968 KB	Output is correct
25	Correct	891 ms	3884 KB	Output is correct
26	Correct	1215 ms	3736 KB	Output is correct
27	Correct	1226 ms	3840 KB	Output is correct
28	Correct	1255 ms	3688 KB	Output is correct
29	Correct	1256 ms	3664 KB	Output is correct
30	Correct	156 ms	4136 KB	Output is correct
31	Correct	145 ms	4172 KB	Output is correct
32	Correct	163 ms	4288 KB	Output is correct
33	Correct	153 ms	4256 KB	Output is correct
34	Correct	143 ms	4192 KB	Output is correct
35	Correct	141 ms	4188 KB	Output is correct
36	Correct	141 ms	4240 KB	Output is correct
37	Correct	131 ms	4332 KB	Output is correct
38	Correct	141 ms	4364 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	1108 KB	Output is correct
2	Correct	9 ms	1108 KB	Output is correct
3	Correct	9 ms	1108 KB	Output is correct
4	Correct	10 ms	1108 KB	Output is correct
5	Correct	10 ms	1108 KB	Output is correct
6	Correct	15 ms	1108 KB	Output is correct
7	Correct	14 ms	1084 KB	Output is correct
8	Correct	14 ms	1108 KB	Output is correct
9	Correct	15 ms	1100 KB	Output is correct
10	Correct	14 ms	1108 KB	Output is correct
11	Correct	11 ms	1108 KB	Output is correct
12	Correct	8 ms	1108 KB	Output is correct
13	Correct	9 ms	1108 KB	Output is correct
14	Correct	10 ms	1108 KB	Output is correct
15	Correct	10 ms	1124 KB	Output is correct
16	Correct	7 ms	724 KB	Output is correct
17	Correct	5 ms	724 KB	Output is correct
18	Correct	6 ms	724 KB	Output is correct
19	Correct	5 ms	724 KB	Output is correct
20	Correct	6 ms	776 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	131 ms	4172 KB	Output is correct
2	Correct	137 ms	4332 KB	Output is correct
3	Correct	134 ms	4224 KB	Output is correct
4	Correct	130 ms	4212 KB	Output is correct
5	Correct	133 ms	4172 KB	Output is correct
6	Correct	134 ms	4160 KB	Output is correct
7	Correct	133 ms	4160 KB	Output is correct
8	Correct	134 ms	4192 KB	Output is correct
9	Correct	134 ms	4172 KB	Output is correct
10	Correct	138 ms	4140 KB	Output is correct
11	Correct	133 ms	4172 KB	Output is correct
12	Correct	132 ms	4240 KB	Output is correct
13	Correct	132 ms	4172 KB	Output is correct
14	Correct	128 ms	4228 KB	Output is correct
15	Correct	139 ms	4172 KB	Output is correct
16	Correct	29 ms	980 KB	Output is correct
17	Correct	30 ms	1044 KB	Output is correct
18	Correct	28 ms	1036 KB	Output is correct
19	Correct	28 ms	1044 KB	Output is correct
20	Correct	29 ms	1048 KB	Output is correct
21	Correct	857 ms	4032 KB	Output is correct
22	Correct	843 ms	4076 KB	Output is correct
23	Correct	787 ms	4200 KB	Output is correct
24	Correct	875 ms	3968 KB	Output is correct
25	Correct	891 ms	3884 KB	Output is correct
26	Correct	1215 ms	3736 KB	Output is correct
27	Correct	1226 ms	3840 KB	Output is correct
28	Correct	1255 ms	3688 KB	Output is correct
29	Correct	1256 ms	3664 KB	Output is correct
30	Correct	156 ms	4136 KB	Output is correct
31	Correct	145 ms	4172 KB	Output is correct
32	Correct	163 ms	4288 KB	Output is correct
33	Correct	153 ms	4256 KB	Output is correct
34	Correct	143 ms	4192 KB	Output is correct
35	Correct	141 ms	4188 KB	Output is correct
36	Correct	141 ms	4240 KB	Output is correct
37	Correct	131 ms	4332 KB	Output is correct
38	Correct	141 ms	4364 KB	Output is correct
39	Correct	10 ms	1108 KB	Output is correct
40	Correct	9 ms	1108 KB	Output is correct
41	Correct	9 ms	1108 KB	Output is correct
42	Correct	10 ms	1108 KB	Output is correct
43	Correct	10 ms	1108 KB	Output is correct
44	Correct	15 ms	1108 KB	Output is correct
45	Correct	14 ms	1084 KB	Output is correct
46	Correct	14 ms	1108 KB	Output is correct
47	Correct	15 ms	1100 KB	Output is correct
48	Correct	14 ms	1108 KB	Output is correct
49	Correct	11 ms	1108 KB	Output is correct
50	Correct	8 ms	1108 KB	Output is correct
51	Correct	9 ms	1108 KB	Output is correct
52	Correct	10 ms	1108 KB	Output is correct
53	Correct	10 ms	1124 KB	Output is correct
54	Correct	7 ms	724 KB	Output is correct
55	Correct	5 ms	724 KB	Output is correct
56	Correct	6 ms	724 KB	Output is correct
57	Correct	5 ms	724 KB	Output is correct
58	Correct	6 ms	776 KB	Output is correct
59	Correct	1050 ms	4292 KB	Output is correct
60	Correct	1002 ms	4256 KB	Output is correct
61	Correct	989 ms	4312 KB	Output is correct
62	Correct	1085 ms	4348 KB	Output is correct
63	Correct	1028 ms	4240 KB	Output is correct
64	Correct	1582 ms	4360 KB	Output is correct
65	Correct	1603 ms	4300 KB	Output is correct
66	Correct	1707 ms	4252 KB	Output is correct
67	Correct	1734 ms	4168 KB	Output is correct
68	Correct	1716 ms	4200 KB	Output is correct
69	Correct	1055 ms	4244 KB	Output is correct
70	Correct	1030 ms	4264 KB	Output is correct
71	Correct	998 ms	4256 KB	Output is correct
72	Correct	1008 ms	4428 KB	Output is correct
73	Correct	1016 ms	4300 KB	Output is correct
74	Correct	199 ms	1048 KB	Output is correct
75	Correct	188 ms	1068 KB	Output is correct
76	Correct	196 ms	1056 KB	Output is correct
77	Correct	192 ms	1056 KB	Output is correct
78	Correct	194 ms	1100 KB	Output is correct

답안 #745237

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