oj.uz

Submission #335569

# Submission time Handle Problem Language Result Execution time Memory
335569 2020-12-13T07:02:33 Z inwbear Stations (IOI20_stations) C++14
100 / 100
 1134 ms 1292 KB 
#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define MEM(x,a) memset((x),a,sizeof((x)))
#define F first
#define S second
#define imx INT_MAX
const long long MMX = (long long)(1e18);
typedef long long LL;
typedef pair<int,int> pii;
int nn,co[1005];
bitset<1005>go;
vector<int>v[1005];

void dfs(int N,int h)
{
	go[N]=true;
	if(h%2==0)
	{
		co[N]=nn;
		nn++;
	}
	for(int i=0;i<v[N].size();i++)
	{
		if(!go[v[N][i]])
		{
			dfs(v[N][i],h+1);
		}
	}
	if(h%2==1)
	{
		co[N]=nn;
		nn++;
	}
	return;
}

vector<int>label(int n,int k,vector<int>a,vector<int>b)
{
	vector<int>labels(n);
	nn=0;
	for(int i=0;i<1005;i++)v[i].clear(),go[i]=false;
	for(int i=0;i<a.size();i++)
	{
		v[a[i]].pb(b[i]);
		v[b[i]].pb(a[i]);
	}
	dfs(0,0);
	for(int i=0;i<n;i++)labels[i]=co[i];
	return labels;
}

int find_next_station(int s,int t,vector<int>c)
{
	int st,ed,rech,repr,mxpr=0,mnch=imx;
	bool ch=false;
	for(int i=0;i<c.size();i++)
	{
		st=s,ed=c[i];
		if(ed<st)swap(st,ed);
		if(st<=t&&ed>=t)
		{
			if(mnch>ed-st)
			{
				ch=true;
				mnch=ed-st;
				rech=c[i];
			}
		}
		else
		{
			if(mxpr<ed-st)
			{
				mxpr=ed-st;
				repr=c[i];
			}
		}
	}
	if(ch)return rech;
	else return repr;
}

Compilation message

stations.cpp: In function 'void dfs(int, int)':
stations.cpp:25:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for(int i=0;i<v[N].size();i++)
      |              ~^~~~~~~~~~~~
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:45:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |  for(int i=0;i<a.size();i++)
      |              ~^~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:59:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |  for(int i=0;i<c.size();i++)
      |              ~^~~~~~~~~
stations.cpp:57:17: warning: 'repr' may be used uninitialized in this function [-Wmaybe-uninitialized]
   57 |  int st,ed,rech,repr,mxpr=0,mnch=imx;
      |                 ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 649 ms 1092 KB Output is correct
2 Correct 531 ms 1036 KB Output is correct
3 Correct 1039 ms 864 KB Output is correct
4 Correct 786 ms 948 KB Output is correct
5 Correct 762 ms 948 KB Output is correct
6 Correct 548 ms 1096 KB Output is correct
7 Correct 591 ms 1116 KB Output is correct
8 Correct 3 ms 864 KB Output is correct
9 Correct 6 ms 956 KB Output is correct
10 Correct 2 ms 864 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 476 ms 736 KB Output is correct
2 Correct 718 ms 716 KB Output is correct
3 Correct 912 ms 948 KB Output is correct
4 Correct 656 ms 864 KB Output is correct
5 Correct 710 ms 864 KB Output is correct
6 Correct 495 ms 864 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 600 ms 1096 KB Output is correct
2 Correct 482 ms 1088 KB Output is correct
3 Correct 884 ms 968 KB Output is correct
4 Correct 686 ms 712 KB Output is correct
5 Correct 575 ms 1108 KB Output is correct
6 Correct 572 ms 1292 KB Output is correct
7 Correct 554 ms 1112 KB Output is correct
8 Correct 2 ms 996 KB Output is correct
9 Correct 4 ms 736 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 679 ms 736 KB Output is correct
12 Correct 593 ms 1088 KB Output is correct
13 Correct 643 ms 992 KB Output is correct
14 Correct 511 ms 864 KB Output is correct
15 Correct 64 ms 784 KB Output is correct
16 Correct 81 ms 916 KB Output is correct
17 Correct 98 ms 864 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1134 ms 736 KB Output is correct
2 Correct 658 ms 956 KB Output is correct
3 Correct 597 ms 948 KB Output is correct
4 Correct 3 ms 956 KB Output is correct
5 Correct 4 ms 864 KB Output is correct
6 Correct 2 ms 736 KB Output is correct
7 Correct 609 ms 1076 KB Output is correct
8 Correct 933 ms 1076 KB Output is correct
9 Correct 693 ms 864 KB Output is correct
10 Correct 652 ms 736 KB Output is correct
11 Correct 6 ms 956 KB Output is correct
12 Correct 6 ms 736 KB Output is correct
13 Correct 5 ms 864 KB Output is correct
14 Correct 4 ms 736 KB Output is correct
15 Correct 2 ms 948 KB Output is correct
16 Correct 562 ms 992 KB Output is correct
17 Correct 512 ms 948 KB Output is correct
18 Correct 504 ms 948 KB Output is correct
19 Correct 515 ms 908 KB Output is correct
20 Correct 495 ms 864 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 542 ms 1124 KB Output is correct
2 Correct 475 ms 996 KB Output is correct
3 Correct 858 ms 948 KB Output is correct
4 Correct 669 ms 864 KB Output is correct
5 Correct 622 ms 736 KB Output is correct
6 Correct 462 ms 864 KB Output is correct
7 Correct 536 ms 872 KB Output is correct
8 Correct 3 ms 948 KB Output is correct
9 Correct 3 ms 736 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 542 ms 884 KB Output is correct
12 Correct 521 ms 736 KB Output is correct
13 Correct 996 ms 864 KB Output is correct
14 Correct 694 ms 948 KB Output is correct
15 Correct 631 ms 948 KB Output is correct
16 Correct 449 ms 900 KB Output is correct
17 Correct 648 ms 864 KB Output is correct
18 Correct 558 ms 992 KB Output is correct
19 Correct 526 ms 1228 KB Output is correct
20 Correct 438 ms 900 KB Output is correct
21 Correct 71 ms 912 KB Output is correct
22 Correct 86 ms 736 KB Output is correct
23 Correct 108 ms 892 KB Output is correct
24 Correct 6 ms 736 KB Output is correct
25 Correct 5 ms 736 KB Output is correct
26 Correct 5 ms 736 KB Output is correct
27 Correct 4 ms 864 KB Output is correct
28 Correct 2 ms 736 KB Output is correct
29 Correct 487 ms 956 KB Output is correct
30 Correct 551 ms 1236 KB Output is correct
31 Correct 627 ms 864 KB Output is correct
32 Correct 572 ms 948 KB Output is correct
33 Correct 493 ms 736 KB Output is correct
34 Correct 321 ms 864 KB Output is correct
35 Correct 415 ms 1080 KB Output is correct
36 Correct 433 ms 1232 KB Output is correct
37 Correct 545 ms 1008 KB Output is correct
38 Correct 491 ms 1128 KB Output is correct
39 Correct 530 ms 1228 KB Output is correct
40 Correct 534 ms 1100 KB Output is correct
41 Correct 443 ms 1120 KB Output is correct
42 Correct 69 ms 904 KB Output is correct
43 Correct 106 ms 884 KB Output is correct
44 Correct 141 ms 864 KB Output is correct
45 Correct 157 ms 872 KB Output is correct
46 Correct 421 ms 896 KB Output is correct
47 Correct 391 ms 868 KB Output is correct
48 Correct 64 ms 992 KB Output is correct
49 Correct 59 ms 1088 KB Output is correct