oj.uz

Submission #71453

# Submission time Handle Problem Language Result Execution time Memory
71453 2018-08-24T17:08:22 Z Pajaraja Port Facility (JOI17_port_facility) C++17
100 / 100
 5717 ms 216920 KB 
#include <bits/stdc++.h>
#define MAXN 1000007
#define MOD 1000000007
using namespace std;
pair<int,int> seg[8*MAXN];
int a[2][MAXN],c[2*MAXN],n;
bool vi[MAXN];
void upd(int l,int r,int v1,int v2,int p,int ind)
{
	if(l==r)
	{
		seg[ind]=make_pair(v1,v2);
		return;
	}
	int s=(l+r)/2;
	if(p<=s) upd(l,s,v1,v2,p,2*ind);
	else upd(s+1,r,v1,v2,p,2*ind+1);
	seg[ind]=make_pair(max(seg[2*ind].first,seg[2*ind+1].first),min(seg[2*ind].second,seg[2*ind+1].second));
}
pair<int,int> nm(int l,int r,int lt ,int rt,int ind)
{
	if(l>rt || r<lt) return make_pair(0,2*MAXN);
	if(l>=lt && r<=rt) return seg[ind];
	int s=(l+r)/2;
	pair<int,int> x=nm(l,s,lt,rt,2*ind),y=nm(s+1,r,lt,rt,2*ind+1);
	return make_pair(max(x.first,y.first),min(x.second,y.second));
}
vector<int> g[MAXN],w,b;
void dfs(int s,int x)
{
	vi[s]=true;
	if(x==1) w.push_back(s);
	else b.push_back(s);
	for(int i=0;i<g[s].size();i++) if(!vi[g[s][i]]) dfs(g[s][i],1-x);
}
bool puca(vector<int> v)
{
	bool pr=false;
	for(int i=0;i<v.size();i++) upd(1,2*n,a[0][v[i]],a[0][v[i]],a[1][v[i]],1);
	for(int i=0;i<v.size();i++)
	{
		pair<int,int> pi=nm(1,2*n,a[0][v[i]],a[1][v[i]],1);
		if(pi.second<a[0][v[i]]) pr=true;
	}
	for(int i=0;i<v.size();i++) upd(1,2*n,0,2*MAXN,a[1][v[i]],1);
	return pr;
}
int main()
{
	int sk=1;
	scanf("%d",&n);
	for(int i=0;i<n;i++)
	{
		scanf("%d%d",&a[0][i],&a[1][i]);
		c[a[0][i]]=c[a[1][i]]=i;
		upd(1,2*n,a[0][i],a[0][i],a[1][i],1);
		upd(1,2*n,a[1][i],a[1][i],a[0][i],1);
	}
	for(int i=0;i<n;i++)
	{
		pair<int,int> pi=nm(1,2*n,a[0][i],a[1][i],1);
		if(pi.first>a[1][i])
		{
			g[i].push_back(c[pi.first]);
			g[c[pi.first]].push_back(i);
		}
		if(pi.second<a[0][i])
		{
			g[i].push_back(c[pi.second]);
			g[c[pi.second]].push_back(i);
		}
	}
	for(int i=0;i<2*n;i++) upd(1,2*n,0,2*MAXN,i,1);
	for(int i=0;i<n;i++) if(!vi[i])
	{
		dfs(i,0);
		if(!puca(b) && !puca(w)) sk=(sk*2)%MOD;
		else sk=0;
		b.clear();
		w.clear();
	}
	printf("%d",sk);
}

Compilation message

port_facility.cpp: In function 'void dfs(int, int)':
port_facility.cpp:34:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<g[s].size();i++) if(!vi[g[s][i]]) dfs(g[s][i],1-x);
              ~^~~~~~~~~~~~
port_facility.cpp: In function 'bool puca(std::vector<int>)':
port_facility.cpp:39:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v.size();i++) upd(1,2*n,a[0][v[i]],a[0][v[i]],a[1][v[i]],1);
              ~^~~~~~~~~
port_facility.cpp:40:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v.size();i++)
              ~^~~~~~~~~
port_facility.cpp:45:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v.size();i++) upd(1,2*n,0,2*MAXN,a[1][v[i]],1);
              ~^~~~~~~~~
port_facility.cpp: In function 'int main()':
port_facility.cpp:51:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
port_facility.cpp:54:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&a[0][i],&a[1][i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 23 ms 23912 KB Output is correct
3 Correct 27 ms 23988 KB Output is correct
4 Correct 21 ms 24032 KB Output is correct
5 Correct 23 ms 24104 KB Output is correct
6 Correct 28 ms 24104 KB Output is correct
7 Correct 25 ms 24104 KB Output is correct
8 Correct 23 ms 24104 KB Output is correct
9 Correct 27 ms 24104 KB Output is correct
10 Correct 27 ms 24104 KB Output is correct
11 Correct 27 ms 24104 KB Output is correct
12 Correct 26 ms 24104 KB Output is correct
13 Correct 29 ms 24104 KB Output is correct
14 Correct 31 ms 24104 KB Output is correct
15 Correct 28 ms 24176 KB Output is correct
16 Correct 27 ms 24176 KB Output is correct
17 Correct 29 ms 24176 KB Output is correct
18 Correct 27 ms 24176 KB Output is correct
19 Correct 25 ms 24176 KB Output is correct
20 Correct 25 ms 24176 KB Output is correct
21 Correct 24 ms 24176 KB Output is correct
22 Correct 24 ms 24176 KB Output is correct
23 Correct 23 ms 24176 KB Output is correct
24 Correct 25 ms 24176 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 23 ms 23912 KB Output is correct
3 Correct 27 ms 23988 KB Output is correct
4 Correct 21 ms 24032 KB Output is correct
5 Correct 23 ms 24104 KB Output is correct
6 Correct 28 ms 24104 KB Output is correct
7 Correct 25 ms 24104 KB Output is correct
8 Correct 23 ms 24104 KB Output is correct
9 Correct 27 ms 24104 KB Output is correct
10 Correct 27 ms 24104 KB Output is correct
11 Correct 27 ms 24104 KB Output is correct
12 Correct 26 ms 24104 KB Output is correct
13 Correct 29 ms 24104 KB Output is correct
14 Correct 31 ms 24104 KB Output is correct
15 Correct 28 ms 24176 KB Output is correct
16 Correct 27 ms 24176 KB Output is correct
17 Correct 29 ms 24176 KB Output is correct
18 Correct 27 ms 24176 KB Output is correct
19 Correct 25 ms 24176 KB Output is correct
20 Correct 25 ms 24176 KB Output is correct
21 Correct 24 ms 24176 KB Output is correct
22 Correct 24 ms 24176 KB Output is correct
23 Correct 23 ms 24176 KB Output is correct
24 Correct 25 ms 24176 KB Output is correct
25 Correct 27 ms 24344 KB Output is correct
26 Correct 28 ms 24364 KB Output is correct
27 Correct 27 ms 24384 KB Output is correct
28 Correct 27 ms 24384 KB Output is correct
29 Correct 33 ms 24388 KB Output is correct
30 Correct 32 ms 24452 KB Output is correct
31 Correct 32 ms 24464 KB Output is correct
32 Correct 31 ms 24484 KB Output is correct
33 Correct 35 ms 24504 KB Output is correct
34 Correct 30 ms 24524 KB Output is correct
35 Correct 26 ms 24524 KB Output is correct
36 Correct 27 ms 24524 KB Output is correct
37 Correct 26 ms 24600 KB Output is correct
38 Correct 31 ms 24620 KB Output is correct
39 Correct 36 ms 24640 KB Output is correct
40 Correct 27 ms 24640 KB Output is correct
41 Correct 30 ms 24680 KB Output is correct
42 Correct 30 ms 24680 KB Output is correct
43 Correct 29 ms 24724 KB Output is correct
44 Correct 28 ms 24740 KB Output is correct

Subtask #3
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 23 ms 23912 KB Output is correct
3 Correct 27 ms 23988 KB Output is correct
4 Correct 21 ms 24032 KB Output is correct
5 Correct 23 ms 24104 KB Output is correct
6 Correct 28 ms 24104 KB Output is correct
7 Correct 25 ms 24104 KB Output is correct
8 Correct 23 ms 24104 KB Output is correct
9 Correct 27 ms 24104 KB Output is correct
10 Correct 27 ms 24104 KB Output is correct
11 Correct 27 ms 24104 KB Output is correct
12 Correct 26 ms 24104 KB Output is correct
13 Correct 29 ms 24104 KB Output is correct
14 Correct 31 ms 24104 KB Output is correct
15 Correct 28 ms 24176 KB Output is correct
16 Correct 27 ms 24176 KB Output is correct
17 Correct 29 ms 24176 KB Output is correct
18 Correct 27 ms 24176 KB Output is correct
19 Correct 25 ms 24176 KB Output is correct
20 Correct 25 ms 24176 KB Output is correct
21 Correct 24 ms 24176 KB Output is correct
22 Correct 24 ms 24176 KB Output is correct
23 Correct 23 ms 24176 KB Output is correct
24 Correct 25 ms 24176 KB Output is correct
25 Correct 27 ms 24344 KB Output is correct
26 Correct 28 ms 24364 KB Output is correct
27 Correct 27 ms 24384 KB Output is correct
28 Correct 27 ms 24384 KB Output is correct
29 Correct 33 ms 24388 KB Output is correct
30 Correct 32 ms 24452 KB Output is correct
31 Correct 32 ms 24464 KB Output is correct
32 Correct 31 ms 24484 KB Output is correct
33 Correct 35 ms 24504 KB Output is correct
34 Correct 30 ms 24524 KB Output is correct
35 Correct 26 ms 24524 KB Output is correct
36 Correct 27 ms 24524 KB Output is correct
37 Correct 26 ms 24600 KB Output is correct
38 Correct 31 ms 24620 KB Output is correct
39 Correct 36 ms 24640 KB Output is correct
40 Correct 27 ms 24640 KB Output is correct
41 Correct 30 ms 24680 KB Output is correct
42 Correct 30 ms 24680 KB Output is correct
43 Correct 29 ms 24724 KB Output is correct
44 Correct 28 ms 24740 KB Output is correct
45 Correct 369 ms 34488 KB Output is correct
46 Correct 370 ms 36004 KB Output is correct
47 Correct 370 ms 36884 KB Output is correct
48 Correct 394 ms 38616 KB Output is correct
49 Correct 446 ms 39492 KB Output is correct
50 Correct 435 ms 41172 KB Output is correct
51 Correct 470 ms 42176 KB Output is correct
52 Correct 321 ms 42176 KB Output is correct
53 Correct 402 ms 42176 KB Output is correct
54 Correct 420 ms 47676 KB Output is correct
55 Correct 338 ms 48764 KB Output is correct
56 Correct 339 ms 50000 KB Output is correct
57 Correct 402 ms 50000 KB Output is correct
58 Correct 296 ms 50000 KB Output is correct
59 Correct 319 ms 50000 KB Output is correct
60 Correct 360 ms 52476 KB Output is correct
61 Correct 364 ms 54184 KB Output is correct
62 Correct 339 ms 54896 KB Output is correct
63 Correct 344 ms 56656 KB Output is correct
64 Correct 356 ms 58428 KB Output is correct
65 Correct 344 ms 61684 KB Output is correct
66 Correct 358 ms 62984 KB Output is correct
67 Correct 394 ms 63680 KB Output is correct
68 Correct 331 ms 65140 KB Output is correct
69 Correct 387 ms 66488 KB Output is correct
70 Correct 359 ms 67524 KB Output is correct
71 Correct 349 ms 68776 KB Output is correct
72 Correct 383 ms 70168 KB Output is correct
73 Correct 396 ms 71476 KB Output is correct
74 Correct 381 ms 72764 KB Output is correct
75 Correct 424 ms 76244 KB Output is correct
76 Correct 408 ms 78920 KB Output is correct
77 Correct 368 ms 78920 KB Output is correct
78 Correct 483 ms 78920 KB Output is correct
79 Correct 456 ms 78920 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB Output is correct
2 Correct 23 ms 23912 KB Output is correct
3 Correct 27 ms 23988 KB Output is correct
4 Correct 21 ms 24032 KB Output is correct
5 Correct 23 ms 24104 KB Output is correct
6 Correct 28 ms 24104 KB Output is correct
7 Correct 25 ms 24104 KB Output is correct
8 Correct 23 ms 24104 KB Output is correct
9 Correct 27 ms 24104 KB Output is correct
10 Correct 27 ms 24104 KB Output is correct
11 Correct 27 ms 24104 KB Output is correct
12 Correct 26 ms 24104 KB Output is correct
13 Correct 29 ms 24104 KB Output is correct
14 Correct 31 ms 24104 KB Output is correct
15 Correct 28 ms 24176 KB Output is correct
16 Correct 27 ms 24176 KB Output is correct
17 Correct 29 ms 24176 KB Output is correct
18 Correct 27 ms 24176 KB Output is correct
19 Correct 25 ms 24176 KB Output is correct
20 Correct 25 ms 24176 KB Output is correct
21 Correct 24 ms 24176 KB Output is correct
22 Correct 24 ms 24176 KB Output is correct
23 Correct 23 ms 24176 KB Output is correct
24 Correct 25 ms 24176 KB Output is correct
25 Correct 27 ms 24344 KB Output is correct
26 Correct 28 ms 24364 KB Output is correct
27 Correct 27 ms 24384 KB Output is correct
28 Correct 27 ms 24384 KB Output is correct
29 Correct 33 ms 24388 KB Output is correct
30 Correct 32 ms 24452 KB Output is correct
31 Correct 32 ms 24464 KB Output is correct
32 Correct 31 ms 24484 KB Output is correct
33 Correct 35 ms 24504 KB Output is correct
34 Correct 30 ms 24524 KB Output is correct
35 Correct 26 ms 24524 KB Output is correct
36 Correct 27 ms 24524 KB Output is correct
37 Correct 26 ms 24600 KB Output is correct
38 Correct 31 ms 24620 KB Output is correct
39 Correct 36 ms 24640 KB Output is correct
40 Correct 27 ms 24640 KB Output is correct
41 Correct 30 ms 24680 KB Output is correct
42 Correct 30 ms 24680 KB Output is correct
43 Correct 29 ms 24724 KB Output is correct
44 Correct 28 ms 24740 KB Output is correct
45 Correct 369 ms 34488 KB Output is correct
46 Correct 370 ms 36004 KB Output is correct
47 Correct 370 ms 36884 KB Output is correct
48 Correct 394 ms 38616 KB Output is correct
49 Correct 446 ms 39492 KB Output is correct
50 Correct 435 ms 41172 KB Output is correct
51 Correct 470 ms 42176 KB Output is correct
52 Correct 321 ms 42176 KB Output is correct
53 Correct 402 ms 42176 KB Output is correct
54 Correct 420 ms 47676 KB Output is correct
55 Correct 338 ms 48764 KB Output is correct
56 Correct 339 ms 50000 KB Output is correct
57 Correct 402 ms 50000 KB Output is correct
58 Correct 296 ms 50000 KB Output is correct
59 Correct 319 ms 50000 KB Output is correct
60 Correct 360 ms 52476 KB Output is correct
61 Correct 364 ms 54184 KB Output is correct
62 Correct 339 ms 54896 KB Output is correct
63 Correct 344 ms 56656 KB Output is correct
64 Correct 356 ms 58428 KB Output is correct
65 Correct 344 ms 61684 KB Output is correct
66 Correct 358 ms 62984 KB Output is correct
67 Correct 394 ms 63680 KB Output is correct
68 Correct 331 ms 65140 KB Output is correct
69 Correct 387 ms 66488 KB Output is correct
70 Correct 359 ms 67524 KB Output is correct
71 Correct 349 ms 68776 KB Output is correct
72 Correct 383 ms 70168 KB Output is correct
73 Correct 396 ms 71476 KB Output is correct
74 Correct 381 ms 72764 KB Output is correct
75 Correct 424 ms 76244 KB Output is correct
76 Correct 408 ms 78920 KB Output is correct
77 Correct 368 ms 78920 KB Output is correct
78 Correct 483 ms 78920 KB Output is correct
79 Correct 456 ms 78920 KB Output is correct
80 Correct 5717 ms 142432 KB Output is correct
81 Correct 5413 ms 142432 KB Output is correct
82 Correct 5147 ms 142432 KB Output is correct
83 Correct 5592 ms 142432 KB Output is correct
84 Correct 5116 ms 142432 KB Output is correct
85 Correct 5055 ms 142892 KB Output is correct
86 Correct 4770 ms 143576 KB Output is correct
87 Correct 3395 ms 143576 KB Output is correct
88 Correct 4601 ms 143576 KB Output is correct
89 Correct 5464 ms 160880 KB Output is correct
90 Correct 5097 ms 160880 KB Output is correct
91 Correct 4919 ms 160880 KB Output is correct
92 Correct 4805 ms 160880 KB Output is correct
93 Correct 3551 ms 160880 KB Output is correct
94 Correct 4312 ms 160880 KB Output is correct
95 Correct 4870 ms 160880 KB Output is correct
96 Correct 4869 ms 160880 KB Output is correct
97 Correct 4264 ms 160880 KB Output is correct
98 Correct 4510 ms 160880 KB Output is correct
99 Correct 4649 ms 160880 KB Output is correct
100 Correct 4270 ms 163336 KB Output is correct
101 Correct 5131 ms 166932 KB Output is correct
102 Correct 5050 ms 166932 KB Output is correct
103 Correct 5414 ms 175216 KB Output is correct
104 Correct 4913 ms 176992 KB Output is correct
105 Correct 5455 ms 177712 KB Output is correct
106 Correct 5257 ms 178100 KB Output is correct
107 Correct 5573 ms 180256 KB Output is correct
108 Correct 5434 ms 181020 KB Output is correct
109 Correct 5159 ms 181800 KB Output is correct
110 Correct 5037 ms 215544 KB Output is correct
111 Correct 4954 ms 216500 KB Output is correct
112 Correct 4260 ms 216920 KB Output is correct
113 Correct 4914 ms 216920 KB Output is correct
114 Correct 5028 ms 216920 KB Output is correct