답안 #20471 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
20471	2017-02-12T01:24:50 Z	sgc109(#57, sgc109)	초음속철도 (OJUZ11_rail)	C++11	45 / 100	506 ms	393696 KB

rail

// #include <bits/stdc++.h>
#include <unordered_set>
// #include <unordered_map>
#include <vector>
#include <cstdio>
#include <iostream>
#include <cstring>
#include <queue>
#include <set>
#include <map>
#include <cmath>
#include <algorithm>
#include <utility>
#include <string>
#define REP(i,a,b) for(int i=a;i<=b;++i)
#define FOR(i,n) for(int i=0;i<n;++i)
#define pb push_back
#define all(v) (v).begin(),(v).end()
#define sz(v) ((int)(v).size())
#define inp1(a) scanf("%d",&a)
#define inp2(a,b) scanf("%d%d",&a,&b)
#define inp3(a,b,c) scanf("%d%d%d",&a,&b,&c)
#define inp4(a,b,c,d) scanf("%d%d%d%d",&a,&b,&c,&d)
#define inp5(a,b,c,d,e) scanf("%d%d%d%d%d",&a,&b,&c,&d,&e)z
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef pair<int,int> pii;
typedef vector<pii> vii;
typedef vector<pll> vll;
typedef vector<vector<int> > vvi;
typedef pair<int,pair<int,int> > piii;
typedef vector<piii> viii;
const double EPSILON = 1e-9;
const double PI = acos(-1);
const int MOD = 1000000007;
const int INF = 0x3c3c3c3c;
const long long INFL = 0x3c3c3c3c3c3c3c3c;
const int MAX_N = 102;

struct Range{
	int l,r;
	bool operator<(Range& rhs){
		if(l==rhs.l) return r<rhs.r;
		return l<rhs.l;
	}
};
int N,M,a,b,E;
Range ranges[5003];
ll dp[5003][10003];
unordered_set<int> us;
ll solve(int pos, int last){
	if(pos==M) return last==E;
	if(ranges[pos].l!=0&&last<ranges[pos].l) return 0;
	ll& cache = dp[pos][last+1];
	if(cache!=-1) return cache;
	return cache = (solve(pos+1,max(last,ranges[pos].r))+solve(pos+1,last))%MOD;
}
int main() {
	memset(dp,-1,sizeof(dp));
	vi sorted;
	inp2(N,M);
	us.insert(1),sorted.pb(1);
	us.insert(N),sorted.pb(N);
	FOR(i,M){
		inp2(a,b);
		ranges[i]=Range{a,b};
		if(!us.count(a)) us.insert(a),sorted.pb(a);
		if(!us.count(b)) us.insert(b),sorted.pb(b);
	}
	sort(all(sorted));
	E=sz(sorted)-1;
	FOR(i,M) {
		ranges[i].l=lower_bound(all(sorted),ranges[i].l)-sorted.begin();
		ranges[i].r=lower_bound(all(sorted),ranges[i].r)-sorted.begin();
	}
	sort(ranges,ranges+M);
	// 좌표압축 + 정렬까지 완료

	printf("%lld", solve(0,-1));
	return 0;
}

Compilation message

rail.cpp: In function 'int main()':
rail.cpp:64:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  inp2(N,M);
           ^
rail.cpp:68:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   inp2(a,b);
            ^

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	39 ms	393044 KB	Output is correct
2	Correct	16 ms	393044 KB	Output is correct
3	Correct	39 ms	393044 KB	Output is correct
4	Correct	46 ms	393044 KB	Output is correct
5	Correct	39 ms	393044 KB	Output is correct
6	Correct	19 ms	393044 KB	Output is correct
7	Correct	29 ms	393044 KB	Output is correct
8	Correct	16 ms	393044 KB	Output is correct
9	Correct	33 ms	393044 KB	Output is correct
10	Correct	13 ms	393044 KB	Output is correct
11	Correct	6 ms	393044 KB	Output is correct
12	Correct	19 ms	393044 KB	Output is correct
13	Correct	33 ms	393044 KB	Output is correct
14	Correct	29 ms	393044 KB	Output is correct
15	Correct	29 ms	393044 KB	Output is correct
16	Correct	26 ms	393044 KB	Output is correct
17	Correct	26 ms	393044 KB	Output is correct
18	Correct	16 ms	393044 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	39 ms	393044 KB	Output is correct
2	Correct	16 ms	393044 KB	Output is correct
3	Correct	39 ms	393044 KB	Output is correct
4	Correct	46 ms	393044 KB	Output is correct
5	Correct	39 ms	393044 KB	Output is correct
6	Correct	19 ms	393044 KB	Output is correct
7	Correct	29 ms	393044 KB	Output is correct
8	Correct	16 ms	393044 KB	Output is correct
9	Correct	33 ms	393044 KB	Output is correct
10	Correct	13 ms	393044 KB	Output is correct
11	Correct	6 ms	393044 KB	Output is correct
12	Correct	19 ms	393044 KB	Output is correct
13	Correct	33 ms	393044 KB	Output is correct
14	Correct	29 ms	393044 KB	Output is correct
15	Correct	29 ms	393044 KB	Output is correct
16	Correct	26 ms	393044 KB	Output is correct
17	Correct	26 ms	393044 KB	Output is correct
18	Correct	16 ms	393044 KB	Output is correct
19	Correct	39 ms	393044 KB	Output is correct
20	Correct	46 ms	393044 KB	Output is correct
21	Correct	29 ms	393044 KB	Output is correct
22	Correct	33 ms	393044 KB	Output is correct
23	Correct	29 ms	393044 KB	Output is correct
24	Correct	16 ms	393044 KB	Output is correct
25	Correct	39 ms	393044 KB	Output is correct
26	Correct	36 ms	393044 KB	Output is correct
27	Correct	33 ms	393044 KB	Output is correct
28	Correct	19 ms	393044 KB	Output is correct
29	Correct	33 ms	393044 KB	Output is correct
30	Correct	26 ms	393044 KB	Output is correct
31	Correct	16 ms	393044 KB	Output is correct
32	Correct	19 ms	393044 KB	Output is correct
33	Correct	29 ms	393044 KB	Output is correct
34	Correct	29 ms	393044 KB	Output is correct
35	Correct	26 ms	393044 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	43 ms	393044 KB	Output is correct
2	Correct	36 ms	393044 KB	Output is correct
3	Correct	49 ms	393044 KB	Output is correct
4	Correct	33 ms	393288 KB	Output is correct
5	Runtime error	59 ms	393340 KB	Execution killed because of forbidden syscall futex (202)
6	Runtime error	23 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
7	Incorrect	39 ms	393612 KB	Output isn't correct
8	Correct	36 ms	393044 KB	Output is correct
9	Runtime error	26 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
10	Runtime error	39 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
11	Runtime error	29 ms	393340 KB	Execution killed because of forbidden syscall futex (202)
12	Runtime error	36 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
13	Runtime error	29 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
14	Runtime error	9 ms	393044 KB	Execution killed because of forbidden syscall futex (202)
15	Runtime error	33 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
16	Runtime error	23 ms	393044 KB	Execution killed because of forbidden syscall futex (202)
17	Runtime error	36 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
18	Runtime error	36 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
19	Runtime error	29 ms	393696 KB	Execution killed because of forbidden syscall futex (202)

Subtask #4
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	39 ms	393044 KB	Output is correct
2	Correct	16 ms	393044 KB	Output is correct
3	Correct	39 ms	393044 KB	Output is correct
4	Correct	46 ms	393044 KB	Output is correct
5	Correct	39 ms	393044 KB	Output is correct
6	Correct	19 ms	393044 KB	Output is correct
7	Correct	29 ms	393044 KB	Output is correct
8	Correct	16 ms	393044 KB	Output is correct
9	Correct	33 ms	393044 KB	Output is correct
10	Correct	13 ms	393044 KB	Output is correct
11	Correct	6 ms	393044 KB	Output is correct
12	Correct	19 ms	393044 KB	Output is correct
13	Correct	33 ms	393044 KB	Output is correct
14	Correct	29 ms	393044 KB	Output is correct
15	Correct	29 ms	393044 KB	Output is correct
16	Correct	26 ms	393044 KB	Output is correct
17	Correct	26 ms	393044 KB	Output is correct
18	Correct	16 ms	393044 KB	Output is correct
19	Correct	39 ms	393044 KB	Output is correct
20	Correct	46 ms	393044 KB	Output is correct
21	Correct	29 ms	393044 KB	Output is correct
22	Correct	33 ms	393044 KB	Output is correct
23	Correct	29 ms	393044 KB	Output is correct
24	Correct	16 ms	393044 KB	Output is correct
25	Correct	39 ms	393044 KB	Output is correct
26	Correct	36 ms	393044 KB	Output is correct
27	Correct	33 ms	393044 KB	Output is correct
28	Correct	19 ms	393044 KB	Output is correct
29	Correct	33 ms	393044 KB	Output is correct
30	Correct	26 ms	393044 KB	Output is correct
31	Correct	16 ms	393044 KB	Output is correct
32	Correct	19 ms	393044 KB	Output is correct
33	Correct	29 ms	393044 KB	Output is correct
34	Correct	29 ms	393044 KB	Output is correct
35	Correct	26 ms	393044 KB	Output is correct
36	Correct	376 ms	393672 KB	Output is correct
37	Correct	296 ms	393632 KB	Output is correct
38	Correct	213 ms	393244 KB	Output is correct
39	Correct	33 ms	393148 KB	Output is correct
40	Correct	29 ms	393452 KB	Output is correct
41	Correct	59 ms	393564 KB	Output is correct
42	Correct	199 ms	393676 KB	Output is correct
43	Correct	26 ms	393044 KB	Output is correct
44	Correct	506 ms	393448 KB	Output is correct
45	Correct	26 ms	393156 KB	Output is correct
46	Correct	363 ms	393444 KB	Output is correct
47	Correct	273 ms	393444 KB	Output is correct
48	Correct	239 ms	393448 KB	Output is correct
49	Correct	33 ms	393152 KB	Output is correct
50	Correct	9 ms	393156 KB	Output is correct
51	Correct	29 ms	393152 KB	Output is correct
52	Correct	43 ms	393180 KB	Output is correct
53	Correct	39 ms	393564 KB	Output is correct
54	Correct	116 ms	393200 KB	Output is correct
55	Correct	36 ms	393564 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	39 ms	393044 KB	Output is correct
2	Correct	16 ms	393044 KB	Output is correct
3	Correct	39 ms	393044 KB	Output is correct
4	Correct	46 ms	393044 KB	Output is correct
5	Correct	39 ms	393044 KB	Output is correct
6	Correct	19 ms	393044 KB	Output is correct
7	Correct	29 ms	393044 KB	Output is correct
8	Correct	16 ms	393044 KB	Output is correct
9	Correct	33 ms	393044 KB	Output is correct
10	Correct	13 ms	393044 KB	Output is correct
11	Correct	6 ms	393044 KB	Output is correct
12	Correct	19 ms	393044 KB	Output is correct
13	Correct	33 ms	393044 KB	Output is correct
14	Correct	29 ms	393044 KB	Output is correct
15	Correct	29 ms	393044 KB	Output is correct
16	Correct	26 ms	393044 KB	Output is correct
17	Correct	26 ms	393044 KB	Output is correct
18	Correct	16 ms	393044 KB	Output is correct
19	Correct	39 ms	393044 KB	Output is correct
20	Correct	46 ms	393044 KB	Output is correct
21	Correct	29 ms	393044 KB	Output is correct
22	Correct	33 ms	393044 KB	Output is correct
23	Correct	29 ms	393044 KB	Output is correct
24	Correct	16 ms	393044 KB	Output is correct
25	Correct	39 ms	393044 KB	Output is correct
26	Correct	36 ms	393044 KB	Output is correct
27	Correct	33 ms	393044 KB	Output is correct
28	Correct	19 ms	393044 KB	Output is correct
29	Correct	33 ms	393044 KB	Output is correct
30	Correct	26 ms	393044 KB	Output is correct
31	Correct	16 ms	393044 KB	Output is correct
32	Correct	19 ms	393044 KB	Output is correct
33	Correct	29 ms	393044 KB	Output is correct
34	Correct	29 ms	393044 KB	Output is correct
35	Correct	26 ms	393044 KB	Output is correct
36	Correct	43 ms	393044 KB	Output is correct
37	Correct	36 ms	393044 KB	Output is correct
38	Correct	49 ms	393044 KB	Output is correct
39	Correct	33 ms	393288 KB	Output is correct
40	Runtime error	59 ms	393340 KB	Execution killed because of forbidden syscall futex (202)
41	Runtime error	23 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
42	Incorrect	39 ms	393612 KB	Output isn't correct
43	Correct	36 ms	393044 KB	Output is correct
44	Runtime error	26 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
45	Runtime error	39 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
46	Runtime error	29 ms	393340 KB	Execution killed because of forbidden syscall futex (202)
47	Runtime error	36 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
48	Runtime error	29 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
49	Runtime error	9 ms	393044 KB	Execution killed because of forbidden syscall futex (202)
50	Runtime error	33 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
51	Runtime error	23 ms	393044 KB	Execution killed because of forbidden syscall futex (202)
52	Runtime error	36 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
53	Runtime error	36 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
54	Runtime error	29 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
55	Correct	376 ms	393672 KB	Output is correct
56	Correct	296 ms	393632 KB	Output is correct
57	Correct	213 ms	393244 KB	Output is correct
58	Correct	33 ms	393148 KB	Output is correct
59	Correct	29 ms	393452 KB	Output is correct
60	Correct	59 ms	393564 KB	Output is correct
61	Correct	199 ms	393676 KB	Output is correct
62	Correct	26 ms	393044 KB	Output is correct
63	Correct	506 ms	393448 KB	Output is correct
64	Correct	26 ms	393156 KB	Output is correct
65	Correct	363 ms	393444 KB	Output is correct
66	Correct	273 ms	393444 KB	Output is correct
67	Correct	239 ms	393448 KB	Output is correct
68	Correct	33 ms	393152 KB	Output is correct
69	Correct	9 ms	393156 KB	Output is correct
70	Correct	29 ms	393152 KB	Output is correct
71	Correct	43 ms	393180 KB	Output is correct
72	Correct	39 ms	393564 KB	Output is correct
73	Correct	116 ms	393200 KB	Output is correct
74	Correct	36 ms	393564 KB	Output is correct
75	Runtime error	39 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
76	Runtime error	23 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
77	Incorrect	53 ms	393180 KB	Output isn't correct
78	Incorrect	33 ms	393044 KB	Output isn't correct
79	Runtime error	29 ms	393564 KB	Execution killed because of forbidden syscall futex (202)
80	Runtime error	36 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
81	Correct	336 ms	393448 KB	Output is correct
82	Runtime error	23 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
83	Runtime error	33 ms	393044 KB	Execution killed because of forbidden syscall futex (202)
84	Runtime error	13 ms	393564 KB	Execution killed because of forbidden syscall futex (202)
85	Runtime error	29 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
86	Runtime error	23 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
87	Runtime error	29 ms	393044 KB	Execution killed because of forbidden syscall futex (202)
88	Runtime error	46 ms	393044 KB	Execution killed because of forbidden syscall futex (202)
89	Runtime error	33 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
90	Runtime error	46 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
91	Runtime error	26 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
92	Runtime error	26 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
93	Runtime error	13 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
94	Runtime error	19 ms	393696 KB	Execution killed because of forbidden syscall futex (202)
95	Runtime error	33 ms	393696 KB	Execution killed because of forbidden syscall futex (202)

답안 #20471

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 8.0 / 8.0

Subtask #3 0 / 25.0

Subtask #4 27.0 / 27.0

Subtask #5 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
8.0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
27.0 / 27.0

Subtask #5
0 / 30.0