oj.uz

Submission #307367

# Submission time Handle Problem Language Result Execution time Memory
307367 2020-09-28T02:21:37 Z arthur_nascimento Stations (IOI20_stations) C++14
76 / 100
 1134 ms 1224 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define debug
#define maxn 1010
int ini[maxn];
int fim[maxn];
int h[maxn];
vector<int> L[maxn];

int cur = 0;
void dfs(int x){
	debug("dfs %d\n",x);
	ini[x] = cur++;
	for(int i : L[x])
		if(ini[i] == 0 && i > 0){
			h[i] = 1 + h[x];
			dfs(i);
		}
	fim[x] = cur++;
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	cur = 0;
	for(int i=0;i<n;i++)
		L[i].clear(), h[i] = ini[i] = fim[i] = 0;
	for(int i=0;i<n-1;i++){
		L[u[i]].pb(v[i]);
		L[v[i]].pb(u[i]);
	}
	dfs(0);
	vector<int> ret;
	for(int i=0;i<n;i++){
		if(h[i]%2 == 0)
			ret.pb(ini[i]);
		else
			ret.pb(fim[i]);
	}
	for(int i : ret)
		debug("%d ",i);
	debug("\n");
	return ret;
}

int find_next_station(int s, int t, std::vector<int> c) {
	debug("qr %d %d ~",s,t); for(int i : c) debug("%d ",i); debug("\n");
	if(c.size() == 1) return c[0];
	sort(c.begin(), c.end());
	if(s < c[0]){
		// S é entrada, c[i] é saida
		int pai = c[c.size()-1];
		if(t < s) return pai;
		if(c.size() >= 2 && t > c[c.size()-2]) return pai;
		for(int i=0;i<c.size();i++){
			if(t <= c[i])
				return c[i];
		}
		
	}
	else {
		// S é saida, c[i] é entrada
		int pai = c[0];
		if(t > s) return pai;
		if(t < c[1]) return pai;
		for(int i=1;i<c.size()-1;i++){
			if(t < c[i+1]) return c[i];
		}
		return c[c.size()-1];
	}
}

Compilation message

stations.cpp: In function 'void dfs(int)':
stations.cpp:14:8: warning: left operand of comma operator has no effect [-Wunused-value]
   14 |  debug("dfs %d\n",x);
      |        ^~~~~~~~~~
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:41:9: warning: left operand of comma operator has no effect [-Wunused-value]
   41 |   debug("%d ",i);
      |         ^~~~~
stations.cpp:42:8: warning: statement has no effect [-Wunused-value]
   42 |  debug("\n");
      |       ~^~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:47:8: warning: left operand of comma operator has no effect [-Wunused-value]
   47 |  debug("qr %d %d ~",s,t); for(int i : c) debug("%d ",i); debug("\n");
      |        ^~~~~~~~~~~~
stations.cpp:47:23: warning: right operand of comma operator has no effect [-Wunused-value]
   47 |  debug("qr %d %d ~",s,t); for(int i : c) debug("%d ",i); debug("\n");
      |                       ^
stations.cpp:47:48: warning: left operand of comma operator has no effect [-Wunused-value]
   47 |  debug("qr %d %d ~",s,t); for(int i : c) debug("%d ",i); debug("\n");
      |                                                ^~~~~
stations.cpp:47:64: warning: statement has no effect [-Wunused-value]
   47 |  debug("qr %d %d ~",s,t); for(int i : c) debug("%d ",i); debug("\n");
      |                                                               ~^~~~~
stations.cpp:55:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |   for(int i=0;i<c.size();i++){
      |               ~^~~~~~~~~
stations.cpp:66:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |   for(int i=1;i<c.size()-1;i++){
      |               ~^~~~~~~~~~~
stations.cpp:71:1: warning: control reaches end of non-void function [-Wreturn-type]
   71 | }
      | ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 384 KB Invalid labels (values out of range). scenario=2, k=1000, vertex=1, label=1990
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=1, label=1022
2 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 598 ms 768 KB Output is correct
2 Correct 537 ms 1000 KB Output is correct
3 Correct 891 ms 1024 KB Output is correct
4 Correct 695 ms 1024 KB Output is correct
5 Correct 636 ms 768 KB Output is correct
6 Correct 473 ms 996 KB Output is correct
7 Correct 449 ms 792 KB Output is correct
8 Correct 2 ms 880 KB Output is correct
9 Correct 4 ms 768 KB Output is correct
10 Correct 2 ms 768 KB Output is correct
11 Correct 702 ms 768 KB Output is correct
12 Correct 462 ms 1000 KB Output is correct
13 Correct 498 ms 984 KB Output is correct
14 Correct 538 ms 824 KB Output is correct
15 Correct 63 ms 864 KB Output is correct
16 Correct 69 ms 816 KB Output is correct
17 Correct 108 ms 768 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1134 ms 1024 KB Output is correct
2 Correct 682 ms 860 KB Output is correct
3 Correct 573 ms 864 KB Output is correct
4 Correct 2 ms 768 KB Output is correct
5 Correct 5 ms 768 KB Output is correct
6 Correct 2 ms 768 KB Output is correct
7 Correct 597 ms 768 KB Output is correct
8 Correct 918 ms 868 KB Output is correct
9 Correct 766 ms 868 KB Output is correct
10 Correct 699 ms 1024 KB Output is correct
11 Correct 7 ms 864 KB Output is correct
12 Correct 6 ms 872 KB Output is correct
13 Correct 5 ms 768 KB Output is correct
14 Correct 4 ms 860 KB Output is correct
15 Correct 2 ms 768 KB Output is correct
16 Correct 502 ms 876 KB Output is correct
17 Correct 521 ms 872 KB Output is correct
18 Correct 500 ms 992 KB Output is correct
19 Correct 548 ms 872 KB Output is correct
20 Correct 639 ms 768 KB Output is correct

Subtask #5
50.0 / 61.0

# Verdict Execution time Memory Grader output
1 Partially correct 613 ms 1000 KB Partially correct
2 Partially correct 546 ms 768 KB Partially correct
3 Correct 859 ms 860 KB Output is correct
4 Correct 672 ms 768 KB Output is correct
5 Correct 608 ms 868 KB Output is correct
6 Partially correct 514 ms 1000 KB Partially correct
7 Partially correct 532 ms 768 KB Partially correct
8 Correct 3 ms 896 KB Output is correct
9 Correct 4 ms 876 KB Output is correct
10 Correct 1 ms 856 KB Output is correct
11 Partially correct 488 ms 804 KB Partially correct
12 Partially correct 550 ms 804 KB Partially correct
13 Correct 879 ms 864 KB Output is correct
14 Correct 702 ms 868 KB Output is correct
15 Correct 609 ms 768 KB Output is correct
16 Partially correct 469 ms 816 KB Partially correct
17 Correct 614 ms 868 KB Output is correct
18 Partially correct 466 ms 1224 KB Partially correct
19 Partially correct 456 ms 1096 KB Partially correct
20 Partially correct 469 ms 768 KB Partially correct
21 Correct 58 ms 868 KB Output is correct
22 Partially correct 70 ms 824 KB Partially correct
23 Partially correct 129 ms 796 KB Partially correct
24 Correct 6 ms 876 KB Output is correct
25 Correct 6 ms 768 KB Output is correct
26 Correct 5 ms 872 KB Output is correct
27 Correct 4 ms 768 KB Output is correct
28 Correct 2 ms 868 KB Output is correct
29 Correct 574 ms 1040 KB Output is correct
30 Correct 544 ms 1040 KB Output is correct
31 Correct 693 ms 868 KB Output is correct
32 Correct 507 ms 768 KB Output is correct
33 Correct 520 ms 768 KB Output is correct
34 Partially correct 334 ms 968 KB Partially correct
35 Partially correct 451 ms 1024 KB Partially correct
36 Partially correct 457 ms 888 KB Partially correct
37 Partially correct 493 ms 1088 KB Partially correct
38 Partially correct 554 ms 784 KB Partially correct
39 Partially correct 446 ms 992 KB Partially correct
40 Partially correct 439 ms 1012 KB Partially correct
41 Partially correct 458 ms 1060 KB Partially correct
42 Partially correct 70 ms 816 KB Partially correct
43 Partially correct 108 ms 1216 KB Partially correct
44 Partially correct 136 ms 784 KB Partially correct
45 Partially correct 166 ms 768 KB Partially correct
46 Partially correct 338 ms 816 KB Partially correct
47 Partially correct 308 ms 932 KB Partially correct
48 Partially correct 65 ms 1024 KB Partially correct
49 Partially correct 70 ms 1120 KB Partially correct