oj.uz

Submission #249210

# Submission time Handle Problem Language Result Execution time Memory
249210 2020-07-14T13:33:03 Z MarcoMeijer Toy Train (IOI17_train) C++14
100 / 100
 595 ms 3832 KB 
#include "train.h"
#include <bits/stdc++.h>
using namespace std;
 
//macros
typedef long long ll;
typedef pair<int, int> ii;
typedef pair<ll, ll> lll;
typedef tuple<int, int, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<iii> viii;
typedef vector<ll> vll;
typedef vector<lll> vlll;
#define REP(a,b,c) for(int a=int(b); a<int(c); a++)
#define RE(a,c) REP(a,0,c)
#define RE1(a,c) REP(a,1,c+1)
#define REI(a,b,c) REP(a,b,c+1)
#define REV(a,b,c) for(int a=int(c-1); a>=int(b); a--)
#define INF 1e9
#define pb push_back
#define fi first
#define se second
#define sz size()
 
const int MX=6000;
 
int n, m;
vi a, r, u, v;
vi res;
set<int> adj[MX], rev[MX];
int cnt[MX];
vi R;
bitset<MX> visited;

vi f(bool A, vi x) { // O(n+m)
    vi ret;
    queue<int> q;
    RE(u,n) cnt[u] = 0;
    visited.reset();
    for(int u : x) q.push(u), visited[u] = 1;
    while(!q.empty()) {
        int u = q.front(); q.pop();
        ret.push_back(u);
        for(int v:rev[u]) {
            if(visited[v]) continue;
            cnt[v]++;
            if(a[v] ==  A) {
                q.push(v), visited[v] = 1;
            } else {
                if(cnt[v] == adj[v].sz) q.push(v), visited[v] = 1;
            }
        }
    }
    return ret;
}
vi getInv(vi x) {
    vi y;
    visited.reset();
    for(int u:x) visited[u] = 1;
    RE(u,n) if(!visited[u] && adj[u].sz) y.push_back(u);
    return y;
}
void removeFromGraph(int u) {
    for(int v:adj[u]) rev[v].erase(u);
    for(int v:rev[u]) adj[v].erase(u);
    adj[u].clear();
    rev[u].clear();
}
 
vi who_wins(vi A, vi _R, vi U, vi V) {
    a = A; r = _R; u = U; v = V;
    n = a.size(); m = u.size();
    res.resize(n);
 
    RE(i,m) adj[u[i]].insert(v[i]);
    RE(i,m) rev[v[i]].insert(u[i]);

    RE(u,n) if(r[u]) R.push_back(u);

    while(1) {
        vi y = f(1, R);
        vi x = getInv(y);
        if(x.sz == 0) {
            RE(u,n) if(adj[u].sz) res[u] = 1;
            return res;
        }
        vi z = f(0,x);
        for(int u:z) res[u] = 0;
        for(int u:z) removeFromGraph(u);
    }
}

Compilation message

train.cpp: In function 'vi f(bool, vi)':
train.cpp:51:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(cnt[v] == adj[v].sz) q.push(v), visited[v] = 1;
                           ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1920 KB Output is correct
2 Correct 8 ms 1920 KB Output is correct
3 Correct 7 ms 1920 KB Output is correct
4 Correct 8 ms 1920 KB Output is correct
5 Correct 7 ms 1920 KB Output is correct
6 Correct 7 ms 1920 KB Output is correct
7 Correct 7 ms 1920 KB Output is correct
8 Correct 7 ms 1920 KB Output is correct
9 Correct 7 ms 1920 KB Output is correct
10 Correct 6 ms 1792 KB Output is correct
11 Correct 5 ms 1664 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 896 KB Output is correct
2 Correct 1 ms 896 KB Output is correct
3 Correct 1 ms 896 KB Output is correct
4 Correct 1 ms 896 KB Output is correct
5 Correct 1 ms 896 KB Output is correct
6 Correct 1 ms 896 KB Output is correct
7 Correct 1 ms 896 KB Output is correct
8 Correct 1 ms 896 KB Output is correct
9 Correct 1 ms 896 KB Output is correct
10 Correct 1 ms 896 KB Output is correct
11 Correct 1 ms 896 KB Output is correct
12 Correct 1 ms 896 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 1 ms 896 KB Output is correct
15 Correct 1 ms 896 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 896 KB Output is correct
19 Correct 1 ms 896 KB Output is correct
20 Correct 1 ms 896 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 189 ms 3456 KB Output is correct
2 Correct 327 ms 3456 KB Output is correct
3 Correct 457 ms 3576 KB Output is correct
4 Correct 16 ms 3456 KB Output is correct
5 Correct 17 ms 3504 KB Output is correct
6 Correct 18 ms 3456 KB Output is correct
7 Correct 16 ms 3472 KB Output is correct
8 Correct 17 ms 3456 KB Output is correct
9 Correct 17 ms 3328 KB Output is correct
10 Correct 16 ms 3328 KB Output is correct
11 Correct 16 ms 3200 KB Output is correct
12 Correct 14 ms 3200 KB Output is correct
13 Correct 15 ms 3456 KB Output is correct
14 Correct 21 ms 3440 KB Output is correct
15 Correct 16 ms 3456 KB Output is correct
16 Correct 23 ms 3456 KB Output is correct
17 Correct 16 ms 3456 KB Output is correct
18 Correct 443 ms 2356 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2944 KB Output is correct
2 Correct 14 ms 3072 KB Output is correct
3 Correct 18 ms 3456 KB Output is correct
4 Correct 17 ms 3456 KB Output is correct
5 Correct 17 ms 3456 KB Output is correct
6 Correct 17 ms 3328 KB Output is correct
7 Correct 17 ms 3328 KB Output is correct
8 Correct 17 ms 3328 KB Output is correct
9 Correct 14 ms 3200 KB Output is correct
10 Correct 15 ms 3456 KB Output is correct
11 Correct 22 ms 3456 KB Output is correct
12 Correct 16 ms 3456 KB Output is correct
13 Correct 17 ms 3456 KB Output is correct
14 Correct 16 ms 3168 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 3456 KB Output is correct
2 Correct 15 ms 3456 KB Output is correct
3 Correct 17 ms 3456 KB Output is correct
4 Correct 15 ms 3200 KB Output is correct
5 Correct 2 ms 1152 KB Output is correct
6 Correct 7 ms 1920 KB Output is correct
7 Correct 15 ms 2944 KB Output is correct
8 Correct 17 ms 3200 KB Output is correct
9 Correct 21 ms 3072 KB Output is correct
10 Correct 5 ms 1512 KB Output is correct
11 Correct 15 ms 2816 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1920 KB Output is correct
2 Correct 8 ms 1920 KB Output is correct
3 Correct 7 ms 1920 KB Output is correct
4 Correct 8 ms 1920 KB Output is correct
5 Correct 7 ms 1920 KB Output is correct
6 Correct 7 ms 1920 KB Output is correct
7 Correct 7 ms 1920 KB Output is correct
8 Correct 7 ms 1920 KB Output is correct
9 Correct 7 ms 1920 KB Output is correct
10 Correct 6 ms 1792 KB Output is correct
11 Correct 5 ms 1664 KB Output is correct
12 Correct 1 ms 896 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 1 ms 896 KB Output is correct
15 Correct 1 ms 896 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 896 KB Output is correct
19 Correct 1 ms 896 KB Output is correct
20 Correct 1 ms 896 KB Output is correct
21 Correct 1 ms 896 KB Output is correct
22 Correct 1 ms 896 KB Output is correct
23 Correct 1 ms 896 KB Output is correct
24 Correct 1 ms 896 KB Output is correct
25 Correct 1 ms 896 KB Output is correct
26 Correct 1 ms 896 KB Output is correct
27 Correct 1 ms 896 KB Output is correct
28 Correct 1 ms 896 KB Output is correct
29 Correct 1 ms 896 KB Output is correct
30 Correct 1 ms 896 KB Output is correct
31 Correct 1 ms 896 KB Output is correct
32 Correct 189 ms 3456 KB Output is correct
33 Correct 327 ms 3456 KB Output is correct
34 Correct 457 ms 3576 KB Output is correct
35 Correct 16 ms 3456 KB Output is correct
36 Correct 17 ms 3504 KB Output is correct
37 Correct 18 ms 3456 KB Output is correct
38 Correct 16 ms 3472 KB Output is correct
39 Correct 17 ms 3456 KB Output is correct
40 Correct 17 ms 3328 KB Output is correct
41 Correct 16 ms 3328 KB Output is correct
42 Correct 16 ms 3200 KB Output is correct
43 Correct 14 ms 3200 KB Output is correct
44 Correct 15 ms 3456 KB Output is correct
45 Correct 21 ms 3440 KB Output is correct
46 Correct 16 ms 3456 KB Output is correct
47 Correct 23 ms 3456 KB Output is correct
48 Correct 16 ms 3456 KB Output is correct
49 Correct 443 ms 2356 KB Output is correct
50 Correct 12 ms 2944 KB Output is correct
51 Correct 14 ms 3072 KB Output is correct
52 Correct 18 ms 3456 KB Output is correct
53 Correct 17 ms 3456 KB Output is correct
54 Correct 17 ms 3456 KB Output is correct
55 Correct 17 ms 3328 KB Output is correct
56 Correct 17 ms 3328 KB Output is correct
57 Correct 17 ms 3328 KB Output is correct
58 Correct 14 ms 3200 KB Output is correct
59 Correct 15 ms 3456 KB Output is correct
60 Correct 22 ms 3456 KB Output is correct
61 Correct 16 ms 3456 KB Output is correct
62 Correct 17 ms 3456 KB Output is correct
63 Correct 16 ms 3168 KB Output is correct
64 Correct 17 ms 3456 KB Output is correct
65 Correct 15 ms 3456 KB Output is correct
66 Correct 17 ms 3456 KB Output is correct
67 Correct 15 ms 3200 KB Output is correct
68 Correct 2 ms 1152 KB Output is correct
69 Correct 7 ms 1920 KB Output is correct
70 Correct 15 ms 2944 KB Output is correct
71 Correct 17 ms 3200 KB Output is correct
72 Correct 21 ms 3072 KB Output is correct
73 Correct 5 ms 1512 KB Output is correct
74 Correct 15 ms 2816 KB Output is correct
75 Correct 249 ms 3704 KB Output is correct
76 Correct 380 ms 3712 KB Output is correct
77 Correct 488 ms 3712 KB Output is correct
78 Correct 486 ms 3832 KB Output is correct
79 Correct 480 ms 3728 KB Output is correct
80 Correct 16 ms 3712 KB Output is correct
81 Correct 17 ms 3712 KB Output is correct
82 Correct 18 ms 3712 KB Output is correct
83 Correct 17 ms 3712 KB Output is correct
84 Correct 18 ms 3712 KB Output is correct
85 Correct 18 ms 3712 KB Output is correct
86 Correct 18 ms 3712 KB Output is correct
87 Correct 18 ms 3712 KB Output is correct
88 Correct 26 ms 3704 KB Output is correct
89 Correct 18 ms 3712 KB Output is correct
90 Correct 26 ms 3712 KB Output is correct
91 Correct 24 ms 3712 KB Output is correct
92 Correct 41 ms 3712 KB Output is correct
93 Correct 46 ms 3712 KB Output is correct
94 Correct 38 ms 3712 KB Output is correct
95 Correct 40 ms 3712 KB Output is correct
96 Correct 132 ms 3448 KB Output is correct
97 Correct 390 ms 3720 KB Output is correct
98 Correct 595 ms 3584 KB Output is correct
99 Correct 589 ms 3584 KB Output is correct
100 Correct 430 ms 2432 KB Output is correct