답안 #41837 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
41837	2018-02-21T11:25:58 Z	IvanC	Boat (APIO16_boat)	C++14	100 / 100	1332 ms	6924 KB

boat

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MAXN = 501;
const ll MOD = 1e9 + 7;
ll dp[MAXN][MAXN],dp2[MAXN][2*MAXN],somatorio1[MAXN],somatorio2[MAXN];
ll precalc[MAXN],A[MAXN],B[MAXN],N,M;
vector<ll> intervalos;
ll binary_expo(ll val,ll pot){
	if(pot == 0) return 1LL;
	if(pot % 2 == 0){
		ll davez = binary_expo(val,pot/2);
		return (davez*davez) % MOD;
	} 
	return (val*binary_expo(val,pot-1)) % MOD;
}
int main(){
	cin >> N;
	for(int i = 1;i<=N;i++){
		cin >> A[i] >> B[i];
		B[i]++;
		intervalos.push_back(A[i]);
		intervalos.push_back(B[i]); 
	}
	sort(intervalos.begin(),intervalos.end());
	intervalos.erase(unique(intervalos.begin(),intervalos.end()),intervalos.end());
	M = intervalos.size() - 2;
	ll tot = 0;
	for(int v = M;v>=0;v--){
		memset(dp,0,sizeof(dp));
		memset(somatorio2,0,sizeof(somatorio2));
		ll tam = intervalos[v+1] - intervalos[v];
		ll vaiate = min(tam,N);
		for(ll i = 2;i<=vaiate;i++){
			precalc[i] = (tam - i + 1)*binary_expo(i,MOD-2);
			precalc[i] %= MOD;
		}
		for(ll i = N;i>=1;i--){
			if(!(A[i] <= intervalos[v] && intervalos[v+1] <= B[i] )) continue;
			dp[i][1] = 1;
			for(ll j = i+1;j<=N;j++){
				dp[i][1] += somatorio1[j];
			}
			dp[i][1] %= MOD;
			dp[i][1] = (dp[i][1] * tam) % MOD;
			for(ll k = 2;k<=vaiate;k++){
				dp[i][k] = somatorio2[k-1];
			}
			dp2[i][v] = dp[i][1];
			somatorio2[1] += dp[i][1];
			somatorio2[1] %= MOD;
			for(ll k = 2;k<=vaiate;k++){
				dp[i][k] %= MOD;
				dp[i][k] *= precalc[k];
				dp[i][k] %= MOD;
				dp2[i][v] += dp[i][k];
				somatorio2[k] += dp[i][k];
				somatorio2[k] %= MOD;
			}
			dp2[i][v] %= MOD;
			tot += dp2[i][v];
			tot %= MOD;
		}
		for(int i = 1;i<=N;i++){
			somatorio1[i] += dp2[i][v];
			somatorio1[i] %= MOD;
		}
	}
	cout << tot << endl;
	return 0;
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	197 ms	4216 KB	Output is correct
2	Correct	199 ms	4320 KB	Output is correct
3	Correct	206 ms	4444 KB	Output is correct
4	Correct	202 ms	4444 KB	Output is correct
5	Correct	201 ms	4444 KB	Output is correct
6	Correct	210 ms	4600 KB	Output is correct
7	Correct	194 ms	4600 KB	Output is correct
8	Correct	208 ms	4700 KB	Output is correct
9	Correct	194 ms	4700 KB	Output is correct
10	Correct	204 ms	4744 KB	Output is correct
11	Correct	201 ms	4744 KB	Output is correct
12	Correct	202 ms	4744 KB	Output is correct
13	Correct	198 ms	4744 KB	Output is correct
14	Correct	201 ms	4744 KB	Output is correct
15	Correct	202 ms	4744 KB	Output is correct
16	Correct	41 ms	4744 KB	Output is correct
17	Correct	42 ms	4744 KB	Output is correct
18	Correct	41 ms	4744 KB	Output is correct
19	Correct	43 ms	4744 KB	Output is correct
20	Correct	44 ms	4744 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	197 ms	4216 KB	Output is correct
2	Correct	199 ms	4320 KB	Output is correct
3	Correct	206 ms	4444 KB	Output is correct
4	Correct	202 ms	4444 KB	Output is correct
5	Correct	201 ms	4444 KB	Output is correct
6	Correct	210 ms	4600 KB	Output is correct
7	Correct	194 ms	4600 KB	Output is correct
8	Correct	208 ms	4700 KB	Output is correct
9	Correct	194 ms	4700 KB	Output is correct
10	Correct	204 ms	4744 KB	Output is correct
11	Correct	201 ms	4744 KB	Output is correct
12	Correct	202 ms	4744 KB	Output is correct
13	Correct	198 ms	4744 KB	Output is correct
14	Correct	201 ms	4744 KB	Output is correct
15	Correct	202 ms	4744 KB	Output is correct
16	Correct	41 ms	4744 KB	Output is correct
17	Correct	42 ms	4744 KB	Output is correct
18	Correct	41 ms	4744 KB	Output is correct
19	Correct	43 ms	4744 KB	Output is correct
20	Correct	44 ms	4744 KB	Output is correct
21	Correct	144 ms	5640 KB	Output is correct
22	Correct	146 ms	5740 KB	Output is correct
23	Correct	147 ms	5740 KB	Output is correct
24	Correct	135 ms	5740 KB	Output is correct
25	Correct	143 ms	5740 KB	Output is correct
26	Correct	148 ms	6252 KB	Output is correct
27	Correct	153 ms	6252 KB	Output is correct
28	Correct	151 ms	6272 KB	Output is correct
29	Correct	152 ms	6272 KB	Output is correct
30	Correct	204 ms	6272 KB	Output is correct
31	Correct	195 ms	6272 KB	Output is correct
32	Correct	186 ms	6272 KB	Output is correct
33	Correct	199 ms	6272 KB	Output is correct
34	Correct	196 ms	6272 KB	Output is correct
35	Correct	197 ms	6272 KB	Output is correct
36	Correct	196 ms	6272 KB	Output is correct
37	Correct	192 ms	6272 KB	Output is correct
38	Correct	199 ms	6272 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	36 ms	6272 KB	Output is correct
2	Correct	36 ms	6272 KB	Output is correct
3	Correct	37 ms	6272 KB	Output is correct
4	Correct	36 ms	6272 KB	Output is correct
5	Correct	38 ms	6272 KB	Output is correct
6	Correct	37 ms	6272 KB	Output is correct
7	Correct	41 ms	6272 KB	Output is correct
8	Correct	37 ms	6272 KB	Output is correct
9	Correct	38 ms	6272 KB	Output is correct
10	Correct	40 ms	6272 KB	Output is correct
11	Correct	43 ms	6272 KB	Output is correct
12	Correct	35 ms	6272 KB	Output is correct
13	Correct	36 ms	6272 KB	Output is correct
14	Correct	37 ms	6272 KB	Output is correct
15	Correct	37 ms	6272 KB	Output is correct
16	Correct	22 ms	6272 KB	Output is correct
17	Correct	24 ms	6272 KB	Output is correct
18	Correct	20 ms	6272 KB	Output is correct
19	Correct	19 ms	6272 KB	Output is correct
20	Correct	19 ms	6272 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	197 ms	4216 KB	Output is correct
2	Correct	199 ms	4320 KB	Output is correct
3	Correct	206 ms	4444 KB	Output is correct
4	Correct	202 ms	4444 KB	Output is correct
5	Correct	201 ms	4444 KB	Output is correct
6	Correct	210 ms	4600 KB	Output is correct
7	Correct	194 ms	4600 KB	Output is correct
8	Correct	208 ms	4700 KB	Output is correct
9	Correct	194 ms	4700 KB	Output is correct
10	Correct	204 ms	4744 KB	Output is correct
11	Correct	201 ms	4744 KB	Output is correct
12	Correct	202 ms	4744 KB	Output is correct
13	Correct	198 ms	4744 KB	Output is correct
14	Correct	201 ms	4744 KB	Output is correct
15	Correct	202 ms	4744 KB	Output is correct
16	Correct	41 ms	4744 KB	Output is correct
17	Correct	42 ms	4744 KB	Output is correct
18	Correct	41 ms	4744 KB	Output is correct
19	Correct	43 ms	4744 KB	Output is correct
20	Correct	44 ms	4744 KB	Output is correct
21	Correct	144 ms	5640 KB	Output is correct
22	Correct	146 ms	5740 KB	Output is correct
23	Correct	147 ms	5740 KB	Output is correct
24	Correct	135 ms	5740 KB	Output is correct
25	Correct	143 ms	5740 KB	Output is correct
26	Correct	148 ms	6252 KB	Output is correct
27	Correct	153 ms	6252 KB	Output is correct
28	Correct	151 ms	6272 KB	Output is correct
29	Correct	152 ms	6272 KB	Output is correct
30	Correct	204 ms	6272 KB	Output is correct
31	Correct	195 ms	6272 KB	Output is correct
32	Correct	186 ms	6272 KB	Output is correct
33	Correct	199 ms	6272 KB	Output is correct
34	Correct	196 ms	6272 KB	Output is correct
35	Correct	197 ms	6272 KB	Output is correct
36	Correct	196 ms	6272 KB	Output is correct
37	Correct	192 ms	6272 KB	Output is correct
38	Correct	199 ms	6272 KB	Output is correct
39	Correct	36 ms	6272 KB	Output is correct
40	Correct	36 ms	6272 KB	Output is correct
41	Correct	37 ms	6272 KB	Output is correct
42	Correct	36 ms	6272 KB	Output is correct
43	Correct	38 ms	6272 KB	Output is correct
44	Correct	37 ms	6272 KB	Output is correct
45	Correct	41 ms	6272 KB	Output is correct
46	Correct	37 ms	6272 KB	Output is correct
47	Correct	38 ms	6272 KB	Output is correct
48	Correct	40 ms	6272 KB	Output is correct
49	Correct	43 ms	6272 KB	Output is correct
50	Correct	35 ms	6272 KB	Output is correct
51	Correct	36 ms	6272 KB	Output is correct
52	Correct	37 ms	6272 KB	Output is correct
53	Correct	37 ms	6272 KB	Output is correct
54	Correct	22 ms	6272 KB	Output is correct
55	Correct	24 ms	6272 KB	Output is correct
56	Correct	20 ms	6272 KB	Output is correct
57	Correct	19 ms	6272 KB	Output is correct
58	Correct	19 ms	6272 KB	Output is correct
59	Correct	991 ms	6272 KB	Output is correct
60	Correct	940 ms	6272 KB	Output is correct
61	Correct	898 ms	6272 KB	Output is correct
62	Correct	957 ms	6272 KB	Output is correct
63	Correct	951 ms	6272 KB	Output is correct
64	Correct	1332 ms	6924 KB	Output is correct
65	Correct	1273 ms	6924 KB	Output is correct
66	Correct	1255 ms	6924 KB	Output is correct
67	Correct	1278 ms	6924 KB	Output is correct
68	Correct	1268 ms	6924 KB	Output is correct
69	Correct	896 ms	6924 KB	Output is correct
70	Correct	919 ms	6924 KB	Output is correct
71	Correct	909 ms	6924 KB	Output is correct
72	Correct	956 ms	6924 KB	Output is correct
73	Correct	942 ms	6924 KB	Output is correct
74	Correct	108 ms	6924 KB	Output is correct
75	Correct	113 ms	6924 KB	Output is correct
76	Correct	123 ms	6924 KB	Output is correct
77	Correct	111 ms	6924 KB	Output is correct
78	Correct	118 ms	6924 KB	Output is correct

답안 #41837

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