oj.uz

Submission #559128

# Submission time Handle Problem Language Result Execution time Memory
559128 2022-05-09T12:30:32 Z cadmiumsky Toy Train (IOI17_train) C++14
100 / 100
 1299 ms 3904 KB 
#include "train.h"
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using uset = unordered_set<int>;

const int nmax = 5e3 + 5;
vector<int> g[nmax], t[nmax];
vector<int> own, charge, rez, degree;

int n, m;
uset S, notS;

int cnt = 0;
void solve(uset& V) {
  if(V.size() == 0)
    return;
  S.clear();
  notS.clear();
  for(auto x : V) {
    if(charge[x])
      S.insert(x);
    for(int i = 0; i < g[x].size(); i++) {
      if(V.count(g[x][i]) == 0)
        swap(g[x][i], g[x].back()), g[x].pop_back(), i--;
    }
    for(int i = 0; i < t[x].size(); i++) {
      if(V.count(t[x][i]) == 0)
        swap(t[x][i], t[x].back()), t[x].pop_back(), i--;
    }
  }
  if(S.size() == 0) {
    for(auto x : V)
      rez[x] = 0;
    return;
  }
  for(auto x : V) {
    if(charge[x])
      degree[x] = 0;
    if(own[x] == 1)
      degree[x] = 1;
    else
      degree[x] = g[x].size();
  }
  queue<int> que;
  function<void()> markall = [&]() {
    while (!que.empty()) {
      int node = que.front();
      for(auto x : t[node]) { 
        degree[x]--;
        if(degree[x] == 0 && !S.count(x))
          S.insert(x),
          que.push(x);
      }
      que.pop();
    }
    que = queue<int>();
    return;
  };
  for(auto x : S)
    que.push(x);
  markall();
  if(S.size() == V.size()) {
    for(auto x : V)
      rez[x] = 1;
    return;
  }
  for(auto x : V)
    if(S.count(x) == 0)
      notS.insert(x);
  for(auto x : V) {
    if(notS.count(x) == 1)
      degree[x] = 0;
    if(own[x] == 0)
      degree[x] = 1;
    else
      degree[x] = g[x].size();
  }
  swap(S, notS);
  for(auto x : S)
   que.push(x);
  markall();
  for(auto x : S)
    rez[x] = 0, // formality
    V.erase(x);
  solve(V);
}

std::vector<int> who_wins(std::vector<int> A, std::vector<int> R, std::vector<int> U, std::vector<int> V) {
	own = move(A);
	charge = move(R);
  n = own.size();
  m = U.size();
  degree.resize(n, 0);
  rez.resize(n, 0);
  for(int i = 0; i < m; i++)
    g[U[i]].push_back(V[i]),
    t[V[i]].push_back(U[i]);
  uset Vertex;
  for(int i = 0; i < n; i++)
    Vertex.insert(i);
  solve(Vertex);
  return rez;
}

Compilation message

train.cpp: In function 'void solve(uset&)':
train.cpp:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for(int i = 0; i < g[x].size(); i++) {
      |                    ~~^~~~~~~~~~~~~
train.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i = 0; i < t[x].size(); i++) {
      |                    ~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1492 KB Output is correct
2 Correct 8 ms 1492 KB Output is correct
3 Correct 7 ms 1492 KB Output is correct
4 Correct 8 ms 1532 KB Output is correct
5 Correct 6 ms 1492 KB Output is correct
6 Correct 6 ms 1492 KB Output is correct
7 Correct 6 ms 1492 KB Output is correct
8 Correct 8 ms 1492 KB Output is correct
9 Correct 7 ms 1520 KB Output is correct
10 Correct 6 ms 1492 KB Output is correct
11 Correct 5 ms 1492 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 419 ms 2152 KB Output is correct
2 Correct 771 ms 2508 KB Output is correct
3 Correct 984 ms 2820 KB Output is correct
4 Correct 9 ms 1748 KB Output is correct
5 Correct 13 ms 1748 KB Output is correct
6 Correct 11 ms 1740 KB Output is correct
7 Correct 8 ms 1708 KB Output is correct
8 Correct 9 ms 1748 KB Output is correct
9 Correct 8 ms 1756 KB Output is correct
10 Correct 9 ms 1764 KB Output is correct
11 Correct 9 ms 1748 KB Output is correct
12 Correct 8 ms 1620 KB Output is correct
13 Correct 9 ms 1756 KB Output is correct
14 Correct 9 ms 1748 KB Output is correct
15 Correct 10 ms 1748 KB Output is correct
16 Correct 9 ms 1748 KB Output is correct
17 Correct 8 ms 1748 KB Output is correct
18 Correct 983 ms 3472 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1620 KB Output is correct
2 Correct 9 ms 1620 KB Output is correct
3 Correct 10 ms 1776 KB Output is correct
4 Correct 10 ms 1876 KB Output is correct
5 Correct 9 ms 1808 KB Output is correct
6 Correct 11 ms 1804 KB Output is correct
7 Correct 10 ms 1828 KB Output is correct
8 Correct 10 ms 1748 KB Output is correct
9 Correct 9 ms 1728 KB Output is correct
10 Correct 9 ms 1748 KB Output is correct
11 Correct 10 ms 1748 KB Output is correct
12 Correct 9 ms 1688 KB Output is correct
13 Correct 9 ms 1748 KB Output is correct
14 Correct 10 ms 1748 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 1748 KB Output is correct
2 Correct 9 ms 1756 KB Output is correct
3 Correct 10 ms 1792 KB Output is correct
4 Correct 9 ms 1608 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 5 ms 1364 KB Output is correct
7 Correct 6 ms 1108 KB Output is correct
8 Correct 5 ms 1108 KB Output is correct
9 Correct 6 ms 1108 KB Output is correct
10 Correct 2 ms 724 KB Output is correct
11 Correct 6 ms 1024 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1492 KB Output is correct
2 Correct 8 ms 1492 KB Output is correct
3 Correct 7 ms 1492 KB Output is correct
4 Correct 8 ms 1532 KB Output is correct
5 Correct 6 ms 1492 KB Output is correct
6 Correct 6 ms 1492 KB Output is correct
7 Correct 6 ms 1492 KB Output is correct
8 Correct 8 ms 1492 KB Output is correct
9 Correct 7 ms 1520 KB Output is correct
10 Correct 6 ms 1492 KB Output is correct
11 Correct 5 ms 1492 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 0 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 0 ms 468 KB Output is correct
32 Correct 419 ms 2152 KB Output is correct
33 Correct 771 ms 2508 KB Output is correct
34 Correct 984 ms 2820 KB Output is correct
35 Correct 9 ms 1748 KB Output is correct
36 Correct 13 ms 1748 KB Output is correct
37 Correct 11 ms 1740 KB Output is correct
38 Correct 8 ms 1708 KB Output is correct
39 Correct 9 ms 1748 KB Output is correct
40 Correct 8 ms 1756 KB Output is correct
41 Correct 9 ms 1764 KB Output is correct
42 Correct 9 ms 1748 KB Output is correct
43 Correct 8 ms 1620 KB Output is correct
44 Correct 9 ms 1756 KB Output is correct
45 Correct 9 ms 1748 KB Output is correct
46 Correct 10 ms 1748 KB Output is correct
47 Correct 9 ms 1748 KB Output is correct
48 Correct 8 ms 1748 KB Output is correct
49 Correct 983 ms 3472 KB Output is correct
50 Correct 9 ms 1620 KB Output is correct
51 Correct 9 ms 1620 KB Output is correct
52 Correct 10 ms 1776 KB Output is correct
53 Correct 10 ms 1876 KB Output is correct
54 Correct 9 ms 1808 KB Output is correct
55 Correct 11 ms 1804 KB Output is correct
56 Correct 10 ms 1828 KB Output is correct
57 Correct 10 ms 1748 KB Output is correct
58 Correct 9 ms 1728 KB Output is correct
59 Correct 9 ms 1748 KB Output is correct
60 Correct 10 ms 1748 KB Output is correct
61 Correct 9 ms 1688 KB Output is correct
62 Correct 9 ms 1748 KB Output is correct
63 Correct 10 ms 1748 KB Output is correct
64 Correct 10 ms 1748 KB Output is correct
65 Correct 9 ms 1756 KB Output is correct
66 Correct 10 ms 1792 KB Output is correct
67 Correct 9 ms 1608 KB Output is correct
68 Correct 1 ms 596 KB Output is correct
69 Correct 5 ms 1364 KB Output is correct
70 Correct 6 ms 1108 KB Output is correct
71 Correct 5 ms 1108 KB Output is correct
72 Correct 6 ms 1108 KB Output is correct
73 Correct 2 ms 724 KB Output is correct
74 Correct 6 ms 1024 KB Output is correct
75 Correct 660 ms 2652 KB Output is correct
76 Correct 763 ms 2696 KB Output is correct
77 Correct 1012 ms 3320 KB Output is correct
78 Correct 1014 ms 3124 KB Output is correct
79 Correct 1016 ms 3108 KB Output is correct
80 Correct 11 ms 2004 KB Output is correct
81 Correct 10 ms 1968 KB Output is correct
82 Correct 12 ms 2004 KB Output is correct
83 Correct 12 ms 1960 KB Output is correct
84 Correct 15 ms 1948 KB Output is correct
85 Correct 11 ms 1968 KB Output is correct
86 Correct 13 ms 1996 KB Output is correct
87 Correct 10 ms 2004 KB Output is correct
88 Correct 19 ms 1972 KB Output is correct
89 Correct 11 ms 1980 KB Output is correct
90 Correct 24 ms 1992 KB Output is correct
91 Correct 22 ms 1876 KB Output is correct
92 Correct 47 ms 1964 KB Output is correct
93 Correct 44 ms 2004 KB Output is correct
94 Correct 42 ms 1976 KB Output is correct
95 Correct 46 ms 2000 KB Output is correct
96 Correct 184 ms 1996 KB Output is correct
97 Correct 830 ms 2988 KB Output is correct
98 Correct 1211 ms 3544 KB Output is correct
99 Correct 1299 ms 3904 KB Output is correct
100 Correct 968 ms 3496 KB Output is correct