#include <bits/stdc++.h>
using namespace std;
const int INF = 1e9;
int n,m;
pair<int,int> v[200005];
int nxt[200005];
void calc_nxt()
{
for(int i=1;i<=n;i++)
{
int mxm=v[i].second;
nxt[i]=-1;
for(int j=1;j<=n;j++)
{
if(j==i)
continue;
if(v[j].first <= v[i].second && v[j].second > mxm)
{
mxm = v[j].second;
nxt[i] = j;
}
}
//cout<<i<<" "<<nxt[i]<<" nxt\n";
}
}
int main()
{
cin>>n>>m;
for(int i=1;i<=n;i++)
{
cin>>v[i].first>>v[i].second;
if(v[i].first > v[i].second)
v[i].second += m;
}
calc_nxt();
int rez=INF;
for(int i=1;i<=n;i++)
{
if(v[i].second >= m)
{
int unde=-1,mxm=-1;
for(int j=1;j<=n;j++)
{
if(i!=j && v[j].first <= v[i].second-m)
{
if(v[j].second > mxm)
{
mxm = v[j].second;
unde = j;
}
}
}
//cout<<i<<" "<<unde<<" incearca\n";
int cur=unde,cnt=1;
while(cur!=-1)
{
cnt++;
if(v[cur].second >= v[i].first)
break;
//cout<<cur<<" cur\n";
cur = nxt[cur];
}
if(cur!=-1) rez = min(rez, cnt);
}
}
if(rez==INF)
rez=-1;
cout<<rez;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2384 KB |
Output is correct |
7 |
Correct |
1 ms |
2552 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2552 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
1 ms |
2384 KB |
Output is correct |
16 |
Correct |
1 ms |
2384 KB |
Output is correct |
17 |
Correct |
1 ms |
2384 KB |
Output is correct |
18 |
Correct |
1 ms |
2556 KB |
Output is correct |
19 |
Correct |
1 ms |
2384 KB |
Output is correct |
20 |
Correct |
1 ms |
2384 KB |
Output is correct |
21 |
Correct |
1 ms |
2384 KB |
Output is correct |
22 |
Correct |
1 ms |
2552 KB |
Output is correct |
23 |
Correct |
1 ms |
2384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2384 KB |
Output is correct |
7 |
Correct |
1 ms |
2552 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2552 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
1 ms |
2384 KB |
Output is correct |
16 |
Correct |
1 ms |
2384 KB |
Output is correct |
17 |
Correct |
1 ms |
2384 KB |
Output is correct |
18 |
Correct |
1 ms |
2556 KB |
Output is correct |
19 |
Correct |
1 ms |
2384 KB |
Output is correct |
20 |
Correct |
1 ms |
2384 KB |
Output is correct |
21 |
Correct |
1 ms |
2384 KB |
Output is correct |
22 |
Correct |
1 ms |
2552 KB |
Output is correct |
23 |
Correct |
1 ms |
2384 KB |
Output is correct |
24 |
Correct |
1 ms |
2384 KB |
Output is correct |
25 |
Correct |
1 ms |
2500 KB |
Output is correct |
26 |
Correct |
1 ms |
2384 KB |
Output is correct |
27 |
Correct |
1 ms |
2384 KB |
Output is correct |
28 |
Correct |
1 ms |
2384 KB |
Output is correct |
29 |
Correct |
1 ms |
2384 KB |
Output is correct |
30 |
Correct |
1 ms |
2384 KB |
Output is correct |
31 |
Correct |
1 ms |
2384 KB |
Output is correct |
32 |
Correct |
1 ms |
2384 KB |
Output is correct |
33 |
Correct |
1 ms |
2384 KB |
Output is correct |
34 |
Correct |
1 ms |
2384 KB |
Output is correct |
35 |
Correct |
2 ms |
2384 KB |
Output is correct |
36 |
Correct |
1 ms |
2384 KB |
Output is correct |
37 |
Correct |
1 ms |
2384 KB |
Output is correct |
38 |
Correct |
1 ms |
2384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2384 KB |
Output is correct |
7 |
Correct |
1 ms |
2552 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2552 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
1 ms |
2384 KB |
Output is correct |
16 |
Correct |
1 ms |
2384 KB |
Output is correct |
17 |
Correct |
1 ms |
2384 KB |
Output is correct |
18 |
Correct |
1 ms |
2556 KB |
Output is correct |
19 |
Correct |
1 ms |
2384 KB |
Output is correct |
20 |
Correct |
1 ms |
2384 KB |
Output is correct |
21 |
Correct |
1 ms |
2384 KB |
Output is correct |
22 |
Correct |
1 ms |
2552 KB |
Output is correct |
23 |
Correct |
1 ms |
2384 KB |
Output is correct |
24 |
Correct |
1 ms |
2384 KB |
Output is correct |
25 |
Correct |
1 ms |
2500 KB |
Output is correct |
26 |
Correct |
1 ms |
2384 KB |
Output is correct |
27 |
Correct |
1 ms |
2384 KB |
Output is correct |
28 |
Correct |
1 ms |
2384 KB |
Output is correct |
29 |
Correct |
1 ms |
2384 KB |
Output is correct |
30 |
Correct |
1 ms |
2384 KB |
Output is correct |
31 |
Correct |
1 ms |
2384 KB |
Output is correct |
32 |
Correct |
1 ms |
2384 KB |
Output is correct |
33 |
Correct |
1 ms |
2384 KB |
Output is correct |
34 |
Correct |
1 ms |
2384 KB |
Output is correct |
35 |
Correct |
2 ms |
2384 KB |
Output is correct |
36 |
Correct |
1 ms |
2384 KB |
Output is correct |
37 |
Correct |
1 ms |
2384 KB |
Output is correct |
38 |
Correct |
1 ms |
2384 KB |
Output is correct |
39 |
Correct |
69 ms |
2384 KB |
Output is correct |
40 |
Correct |
67 ms |
2384 KB |
Output is correct |
41 |
Correct |
67 ms |
2552 KB |
Output is correct |
42 |
Correct |
66 ms |
2676 KB |
Output is correct |
43 |
Correct |
68 ms |
2384 KB |
Output is correct |
44 |
Correct |
67 ms |
2384 KB |
Output is correct |
45 |
Correct |
74 ms |
2384 KB |
Output is correct |
46 |
Correct |
66 ms |
2384 KB |
Output is correct |
47 |
Correct |
67 ms |
2384 KB |
Output is correct |
48 |
Correct |
66 ms |
2384 KB |
Output is correct |
49 |
Correct |
23 ms |
2384 KB |
Output is correct |
50 |
Correct |
66 ms |
2560 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
2496 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
2 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2384 KB |
Output is correct |
7 |
Correct |
1 ms |
2496 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
2 ms |
2384 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
74 ms |
2384 KB |
Output is correct |
16 |
Correct |
67 ms |
2384 KB |
Output is correct |
17 |
Correct |
69 ms |
2596 KB |
Output is correct |
18 |
Correct |
68 ms |
2712 KB |
Output is correct |
19 |
Correct |
67 ms |
2552 KB |
Output is correct |
20 |
Execution timed out |
2062 ms |
3400 KB |
Time limit exceeded |
21 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2384 KB |
Output is correct |
7 |
Correct |
1 ms |
2384 KB |
Output is correct |
8 |
Correct |
2 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2384 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
2 ms |
2384 KB |
Output is correct |
12 |
Correct |
68 ms |
2384 KB |
Output is correct |
13 |
Correct |
66 ms |
2384 KB |
Output is correct |
14 |
Correct |
66 ms |
2564 KB |
Output is correct |
15 |
Execution timed out |
2068 ms |
3404 KB |
Time limit exceeded |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2384 KB |
Output is correct |
7 |
Correct |
1 ms |
2552 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2552 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
1 ms |
2384 KB |
Output is correct |
16 |
Correct |
1 ms |
2384 KB |
Output is correct |
17 |
Correct |
1 ms |
2384 KB |
Output is correct |
18 |
Correct |
1 ms |
2556 KB |
Output is correct |
19 |
Correct |
1 ms |
2384 KB |
Output is correct |
20 |
Correct |
1 ms |
2384 KB |
Output is correct |
21 |
Correct |
1 ms |
2384 KB |
Output is correct |
22 |
Correct |
1 ms |
2552 KB |
Output is correct |
23 |
Correct |
1 ms |
2384 KB |
Output is correct |
24 |
Correct |
1 ms |
2384 KB |
Output is correct |
25 |
Correct |
1 ms |
2500 KB |
Output is correct |
26 |
Correct |
1 ms |
2384 KB |
Output is correct |
27 |
Correct |
1 ms |
2384 KB |
Output is correct |
28 |
Correct |
1 ms |
2384 KB |
Output is correct |
29 |
Correct |
1 ms |
2384 KB |
Output is correct |
30 |
Correct |
1 ms |
2384 KB |
Output is correct |
31 |
Correct |
1 ms |
2384 KB |
Output is correct |
32 |
Correct |
1 ms |
2384 KB |
Output is correct |
33 |
Correct |
1 ms |
2384 KB |
Output is correct |
34 |
Correct |
1 ms |
2384 KB |
Output is correct |
35 |
Correct |
2 ms |
2384 KB |
Output is correct |
36 |
Correct |
1 ms |
2384 KB |
Output is correct |
37 |
Correct |
1 ms |
2384 KB |
Output is correct |
38 |
Correct |
1 ms |
2384 KB |
Output is correct |
39 |
Correct |
69 ms |
2384 KB |
Output is correct |
40 |
Correct |
67 ms |
2384 KB |
Output is correct |
41 |
Correct |
67 ms |
2552 KB |
Output is correct |
42 |
Correct |
66 ms |
2676 KB |
Output is correct |
43 |
Correct |
68 ms |
2384 KB |
Output is correct |
44 |
Correct |
67 ms |
2384 KB |
Output is correct |
45 |
Correct |
74 ms |
2384 KB |
Output is correct |
46 |
Correct |
66 ms |
2384 KB |
Output is correct |
47 |
Correct |
67 ms |
2384 KB |
Output is correct |
48 |
Correct |
66 ms |
2384 KB |
Output is correct |
49 |
Correct |
23 ms |
2384 KB |
Output is correct |
50 |
Correct |
66 ms |
2560 KB |
Output is correct |
51 |
Correct |
2 ms |
2496 KB |
Output is correct |
52 |
Correct |
1 ms |
2384 KB |
Output is correct |
53 |
Correct |
2 ms |
2384 KB |
Output is correct |
54 |
Correct |
1 ms |
2384 KB |
Output is correct |
55 |
Correct |
1 ms |
2384 KB |
Output is correct |
56 |
Correct |
1 ms |
2384 KB |
Output is correct |
57 |
Correct |
1 ms |
2496 KB |
Output is correct |
58 |
Correct |
1 ms |
2384 KB |
Output is correct |
59 |
Correct |
2 ms |
2384 KB |
Output is correct |
60 |
Correct |
1 ms |
2384 KB |
Output is correct |
61 |
Correct |
1 ms |
2384 KB |
Output is correct |
62 |
Correct |
1 ms |
2384 KB |
Output is correct |
63 |
Correct |
1 ms |
2384 KB |
Output is correct |
64 |
Correct |
1 ms |
2384 KB |
Output is correct |
65 |
Correct |
74 ms |
2384 KB |
Output is correct |
66 |
Correct |
67 ms |
2384 KB |
Output is correct |
67 |
Correct |
69 ms |
2596 KB |
Output is correct |
68 |
Correct |
68 ms |
2712 KB |
Output is correct |
69 |
Correct |
67 ms |
2552 KB |
Output is correct |
70 |
Execution timed out |
2062 ms |
3400 KB |
Time limit exceeded |
71 |
Halted |
0 ms |
0 KB |
- |