oj.uz

Submission #287600

# Submission time Handle Problem Language Result Execution time Memory
287600 2020-08-31T20:57:31 Z evpipis Toy Train (IOI17_train) C++11
100 / 100
 1008 ms 1552 KB 
#include <bits/stdc++.h>
#include "train.h"

using namespace std;

#define pb push_back
typedef vector<int> vi;

const int len = 5005;
int vis[len], block[len], bel[len], deg[len], n;
vector<int> adj[len];

vi operator-(vi a, vi b){
    sort(a.begin(), a.end());
    sort(b.begin(), b.end());

    vi res;
    for (int i = 0, j = 0; i < a.size(); i++){
        while (j < b.size() && b[j] < a[i])
            j++;

        if (j == b.size() || b[j] > a[i])
            res.pb(a[i]);
    }

    return res;
}

vi func(int sub, vi base){
    for (int u = 0; u < n; u++)
        vis[u] = deg[u] = 0;
    for (int u = 0; u < n; u++){
        if (block[u]) continue;

        for (auto v: adj[u])
            if (!block[v])
                deg[v]++;
    }

    queue<int> myq;
    for (auto u: base)
        vis[u] = 1, myq.push(u);

    while (!myq.empty()){
        int u = myq.front();
        myq.pop();

        for (auto v: adj[u]){
            if (block[v] || vis[v])
                continue;

            if (bel[v] == sub)
                vis[v] = 1, myq.push(v);
            else{
                deg[v]--;
                if (!deg[v])
                    vis[v] = 1, myq.push(v);
            }
        }
    }

    vi res;
    for (int i = 0; i < n; i++)
        if (!block[i] && vis[i])
            res.pb(i);
    return res;
}

vi who_wins(vi B, vi spec, vi U, vi V) {
    n = B.size();

    for (int i = 0; i < U.size(); i++){
        int a = U[i], b = V[i];
        adj[b].pb(a);
    }

    vi graph;
    for (int i = 0; i < n; i++)
        graph.pb(i), block[i] = 0, bel[i] = B[i];

    while (!graph.empty()){
        vi reach, rest;

        for (auto u: graph)
            if (spec[u])
                reach.pb(u);

        reach = func(1, reach);
        rest = func(0, graph-reach);

        if (rest.size() == 0)
            break;

        for (auto u: rest)
            block[u] = 1;
        graph = graph-rest;
    }

    vi res(n, 0);
    for (auto u: graph)
        res[u] = 1;
	return res;
}

Compilation message

train.cpp: In function 'vi operator-(vi, vi)':
train.cpp:18:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (int i = 0, j = 0; i < a.size(); i++){
      |                            ~~^~~~~~~~~~
train.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |         while (j < b.size() && b[j] < a[i])
      |                ~~^~~~~~~~~~
train.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         if (j == b.size() || b[j] > a[i])
      |             ~~^~~~~~~~~~~
train.cpp: In function 'vi who_wins(vi, vi, vi, vi)':
train.cpp:72:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |     for (int i = 0; i < U.size(); i++){
      |                     ~~^~~~~~~~~~
train.cpp:100:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  100 |     for (auto u: graph)
      |     ^~~
train.cpp:102:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  102 |  return res;
      |  ^~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1024 KB Output is correct
2 Correct 7 ms 1024 KB Output is correct
3 Correct 7 ms 1024 KB Output is correct
4 Correct 7 ms 1024 KB Output is correct
5 Correct 6 ms 1024 KB Output is correct
6 Correct 6 ms 1024 KB Output is correct
7 Correct 5 ms 1024 KB Output is correct
8 Correct 7 ms 1024 KB Output is correct
9 Correct 6 ms 1024 KB Output is correct
10 Correct 6 ms 896 KB Output is correct
11 Correct 5 ms 896 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 0 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 448 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 512 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 0 ms 512 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 0 ms 384 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 1280 KB Output is correct
2 Correct 508 ms 1352 KB Output is correct
3 Correct 669 ms 1344 KB Output is correct
4 Correct 9 ms 1280 KB Output is correct
5 Correct 10 ms 1280 KB Output is correct
6 Correct 10 ms 1280 KB Output is correct
7 Correct 8 ms 1280 KB Output is correct
8 Correct 9 ms 1280 KB Output is correct
9 Correct 8 ms 1248 KB Output is correct
10 Correct 9 ms 1152 KB Output is correct
11 Correct 9 ms 1152 KB Output is correct
12 Correct 8 ms 1152 KB Output is correct
13 Correct 9 ms 1280 KB Output is correct
14 Correct 9 ms 1280 KB Output is correct
15 Correct 8 ms 1280 KB Output is correct
16 Correct 9 ms 1280 KB Output is correct
17 Correct 9 ms 1280 KB Output is correct
18 Correct 838 ms 1144 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1152 KB Output is correct
2 Correct 9 ms 1152 KB Output is correct
3 Correct 9 ms 1280 KB Output is correct
4 Correct 9 ms 1280 KB Output is correct
5 Correct 10 ms 1280 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 12 ms 1152 KB Output is correct
8 Correct 8 ms 1276 KB Output is correct
9 Correct 9 ms 1152 KB Output is correct
10 Correct 8 ms 1280 KB Output is correct
11 Correct 9 ms 1408 KB Output is correct
12 Correct 8 ms 1280 KB Output is correct
13 Correct 10 ms 1280 KB Output is correct
14 Correct 9 ms 1152 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 1280 KB Output is correct
2 Correct 9 ms 1280 KB Output is correct
3 Correct 10 ms 1280 KB Output is correct
4 Correct 8 ms 1152 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 7 ms 896 KB Output is correct
7 Correct 6 ms 896 KB Output is correct
8 Correct 6 ms 896 KB Output is correct
9 Correct 6 ms 896 KB Output is correct
10 Correct 2 ms 640 KB Output is correct
11 Correct 5 ms 896 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1024 KB Output is correct
2 Correct 7 ms 1024 KB Output is correct
3 Correct 7 ms 1024 KB Output is correct
4 Correct 7 ms 1024 KB Output is correct
5 Correct 6 ms 1024 KB Output is correct
6 Correct 6 ms 1024 KB Output is correct
7 Correct 5 ms 1024 KB Output is correct
8 Correct 7 ms 1024 KB Output is correct
9 Correct 6 ms 1024 KB Output is correct
10 Correct 6 ms 896 KB Output is correct
11 Correct 5 ms 896 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 512 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 0 ms 384 KB Output is correct
21 Correct 1 ms 512 KB Output is correct
22 Correct 0 ms 512 KB Output is correct
23 Correct 1 ms 512 KB Output is correct
24 Correct 1 ms 448 KB Output is correct
25 Correct 0 ms 512 KB Output is correct
26 Correct 0 ms 384 KB Output is correct
27 Correct 0 ms 512 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 0 ms 512 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 295 ms 1280 KB Output is correct
33 Correct 508 ms 1352 KB Output is correct
34 Correct 669 ms 1344 KB Output is correct
35 Correct 9 ms 1280 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 10 ms 1280 KB Output is correct
38 Correct 8 ms 1280 KB Output is correct
39 Correct 9 ms 1280 KB Output is correct
40 Correct 8 ms 1248 KB Output is correct
41 Correct 9 ms 1152 KB Output is correct
42 Correct 9 ms 1152 KB Output is correct
43 Correct 8 ms 1152 KB Output is correct
44 Correct 9 ms 1280 KB Output is correct
45 Correct 9 ms 1280 KB Output is correct
46 Correct 8 ms 1280 KB Output is correct
47 Correct 9 ms 1280 KB Output is correct
48 Correct 9 ms 1280 KB Output is correct
49 Correct 838 ms 1144 KB Output is correct
50 Correct 8 ms 1152 KB Output is correct
51 Correct 9 ms 1152 KB Output is correct
52 Correct 9 ms 1280 KB Output is correct
53 Correct 9 ms 1280 KB Output is correct
54 Correct 10 ms 1280 KB Output is correct
55 Correct 11 ms 1152 KB Output is correct
56 Correct 12 ms 1152 KB Output is correct
57 Correct 8 ms 1276 KB Output is correct
58 Correct 9 ms 1152 KB Output is correct
59 Correct 8 ms 1280 KB Output is correct
60 Correct 9 ms 1408 KB Output is correct
61 Correct 8 ms 1280 KB Output is correct
62 Correct 10 ms 1280 KB Output is correct
63 Correct 9 ms 1152 KB Output is correct
64 Correct 10 ms 1280 KB Output is correct
65 Correct 9 ms 1280 KB Output is correct
66 Correct 10 ms 1280 KB Output is correct
67 Correct 8 ms 1152 KB Output is correct
68 Correct 1 ms 512 KB Output is correct
69 Correct 7 ms 896 KB Output is correct
70 Correct 6 ms 896 KB Output is correct
71 Correct 6 ms 896 KB Output is correct
72 Correct 6 ms 896 KB Output is correct
73 Correct 2 ms 640 KB Output is correct
74 Correct 5 ms 896 KB Output is correct
75 Correct 431 ms 1332 KB Output is correct
76 Correct 537 ms 1312 KB Output is correct
77 Correct 701 ms 1360 KB Output is correct
78 Correct 701 ms 1552 KB Output is correct
79 Correct 693 ms 1436 KB Output is correct
80 Correct 10 ms 1280 KB Output is correct
81 Correct 10 ms 1280 KB Output is correct
82 Correct 11 ms 1280 KB Output is correct
83 Correct 11 ms 1280 KB Output is correct
84 Correct 12 ms 1280 KB Output is correct
85 Correct 10 ms 1280 KB Output is correct
86 Correct 11 ms 1280 KB Output is correct
87 Correct 10 ms 1152 KB Output is correct
88 Correct 15 ms 1280 KB Output is correct
89 Correct 10 ms 1280 KB Output is correct
90 Correct 21 ms 1280 KB Output is correct
91 Correct 19 ms 1280 KB Output is correct
92 Correct 38 ms 1280 KB Output is correct
93 Correct 41 ms 1280 KB Output is correct
94 Correct 38 ms 1280 KB Output is correct
95 Correct 41 ms 1280 KB Output is correct
96 Correct 154 ms 1268 KB Output is correct
97 Correct 605 ms 1400 KB Output is correct
98 Correct 976 ms 1280 KB Output is correct
99 Correct 1008 ms 1376 KB Output is correct
100 Correct 820 ms 1124 KB Output is correct