oj.uz

Submission #863940

# Submission time Handle Problem Language Result Execution time Memory
863940 2023-10-21T13:45:02 Z hariaakas646 Povjerenstvo (COI22_povjerenstvo) C++17
100 / 100
 336 ms 63740 KB 
#include <bits/stdc++.h>

using namespace std;

#define scd(t) scanf("%d", &t)
#define sclld(t) scanf("%lld", &t)
#define forr(i, j, k) for (int i = j; i < k; i++)
#define frange(i, j) forr(i, 0, j)
#define all(cont) cont.begin(), cont.end()
#define mp make_pair
#define pb push_back
#define f first
#define s second
typedef long long int lli;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<lli> vll;
typedef vector<string> vs;
typedef vector<pii> vii;
typedef vector<vi> vvi;
typedef map<int, int> mpii;
typedef set<int> seti;
typedef multiset<int> mseti;
typedef long double ld;


void usaco()
{
    freopen("/media/hariaakash646/785EF1075EF0BF46/CompetitiveProgramming/input.in", "r", stdin);
//    freopen("problem.out", "w", stdout);
}

int main() {
    // usaco();
    int n, m;
    scd(n);
    scd(m);
    vvi gr(n+1), rg(n+1);
    vi outdeg(n+1);

    frange(i, m) {
        int a, b;
        scd(a);
        scd(b);
        outdeg[a]++;
        gr[a].pb(b);
        rg[b].pb(a);
    }

    vb vis(n+1);
    vb pick(n+1);
    queue<pair<int, bool>> q;

    forr(i, 1, n+1) {
        if(outdeg[i] == 0) q.push(mp(i, true));
    }

    while(q.size()) {
        auto p = q.front();
        q.pop();
        if(vis[p.f]) continue;
        vis[p.f] = true;
        pick[p.f] = p.s;

        if(p.s) {
            for(auto e : gr[p.f]) {
                q.push(mp(e, !p.s));
            }
            for(auto e : rg[p.f]) {
                q.push(mp(e, !p.s));
            }
        }
        else {
            for(auto e : rg[p.f]) {
                outdeg[e]--;
                if(outdeg[e] == 0) q.push(mp(e, !p.s));
            }
        }
    }

    forr(i, 1, n+1) {
        if(!vis[i]) {
            q.push(mp(i, true));
            while(q.size()) {
                auto p = q.front();
                q.pop();
                if(vis[p.f]) continue;
                vis[p.f] = true;
                pick[p.f] = p.s;

                if(p.s) {
                    for(auto e : gr[p.f]) {
                        q.push(mp(e, !p.s));
                    }
                    for(auto e : rg[p.f]) {
                        q.push(mp(e, !p.s));
                    }
                }
                else {
                    for(auto e : rg[p.f]) {
                        outdeg[e]--;
                        if(outdeg[e] == 0) q.push(mp(e, !p.s));
                    }
                }
            }
        }
    }
    vi out;
    forr(i, 1, n+1) {
        if(pick[i]) out.pb(i);
    }
    printf("%d\n", (int)out.size());
    for(auto e : out) printf("%d ", e);
}

Compilation message

Main.cpp: In function 'void usaco()':
Main.cpp:30:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     freopen("/media/hariaakash646/785EF1075EF0BF46/CompetitiveProgramming/input.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
Main.cpp:37:5: note: in expansion of macro 'scd'
   37 |     scd(n);
      |     ^~~
Main.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
Main.cpp:38:5: note: in expansion of macro 'scd'
   38 |     scd(m);
      |     ^~~
Main.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
Main.cpp:44:9: note: in expansion of macro 'scd'
   44 |         scd(a);
      |         ^~~
Main.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define scd(t) scanf("%d", &t)
      |                ~~~~~^~~~~~~~~~
Main.cpp:45:9: note: in expansion of macro 'scd'
   45 |         scd(b);
      |         ^~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 57248 KB Output is correct
2 Correct 146 ms 57028 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 49 ms 33872 KB Output is correct
5 Correct 85 ms 46060 KB Output is correct
6 Correct 132 ms 48916 KB Output is correct
7 Correct 96 ms 47028 KB Output is correct
8 Correct 135 ms 48184 KB Output is correct
9 Correct 263 ms 52660 KB Output is correct
10 Correct 206 ms 49548 KB Output is correct
11 Correct 263 ms 50452 KB Output is correct
12 Correct 273 ms 45096 KB Output is correct
13 Correct 217 ms 51392 KB Output is correct
14 Correct 207 ms 52536 KB Output is correct
15 Correct 196 ms 52940 KB Output is correct
16 Correct 181 ms 53064 KB Output is correct
17 Correct 38 ms 5980 KB Output is correct
18 Correct 68 ms 9508 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 57456 KB Output is correct
2 Correct 141 ms 49860 KB Output is correct
3 Correct 99 ms 44996 KB Output is correct
4 Correct 263 ms 49688 KB Output is correct
5 Correct 332 ms 50360 KB Output is correct
6 Correct 241 ms 47576 KB Output is correct
7 Correct 225 ms 47868 KB Output is correct
8 Correct 208 ms 47784 KB Output is correct
9 Correct 192 ms 47948 KB Output is correct
10 Correct 39 ms 3736 KB Output is correct
11 Correct 33 ms 6356 KB Output is correct
12 Correct 34 ms 6492 KB Output is correct
13 Correct 134 ms 55048 KB Output is correct
14 Correct 140 ms 58200 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 2 ms 860 KB Output is correct
5 Correct 3 ms 860 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 856 KB Output is correct
8 Correct 2 ms 856 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 860 KB Output is correct
13 Correct 2 ms 860 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 2 ms 808 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 2 ms 860 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 604 KB Output is correct

Subtask #4
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 57248 KB Output is correct
2 Correct 146 ms 57028 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 49 ms 33872 KB Output is correct
5 Correct 85 ms 46060 KB Output is correct
6 Correct 132 ms 48916 KB Output is correct
7 Correct 96 ms 47028 KB Output is correct
8 Correct 135 ms 48184 KB Output is correct
9 Correct 263 ms 52660 KB Output is correct
10 Correct 206 ms 49548 KB Output is correct
11 Correct 263 ms 50452 KB Output is correct
12 Correct 273 ms 45096 KB Output is correct
13 Correct 217 ms 51392 KB Output is correct
14 Correct 207 ms 52536 KB Output is correct
15 Correct 196 ms 52940 KB Output is correct
16 Correct 181 ms 53064 KB Output is correct
17 Correct 38 ms 5980 KB Output is correct
18 Correct 68 ms 9508 KB Output is correct
19 Correct 146 ms 57456 KB Output is correct
20 Correct 141 ms 49860 KB Output is correct
21 Correct 99 ms 44996 KB Output is correct
22 Correct 263 ms 49688 KB Output is correct
23 Correct 332 ms 50360 KB Output is correct
24 Correct 241 ms 47576 KB Output is correct
25 Correct 225 ms 47868 KB Output is correct
26 Correct 208 ms 47784 KB Output is correct
27 Correct 192 ms 47948 KB Output is correct
28 Correct 39 ms 3736 KB Output is correct
29 Correct 33 ms 6356 KB Output is correct
30 Correct 34 ms 6492 KB Output is correct
31 Correct 134 ms 55048 KB Output is correct
32 Correct 140 ms 58200 KB Output is correct
33 Correct 2 ms 860 KB Output is correct
34 Correct 2 ms 860 KB Output is correct
35 Correct 1 ms 860 KB Output is correct
36 Correct 2 ms 860 KB Output is correct
37 Correct 3 ms 860 KB Output is correct
38 Correct 2 ms 860 KB Output is correct
39 Correct 2 ms 856 KB Output is correct
40 Correct 2 ms 856 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 2 ms 860 KB Output is correct
45 Correct 2 ms 860 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 2 ms 808 KB Output is correct
48 Correct 2 ms 860 KB Output is correct
49 Correct 2 ms 860 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 1 ms 604 KB Output is correct
52 Correct 142 ms 63740 KB Output is correct
53 Correct 165 ms 53880 KB Output is correct
54 Correct 100 ms 48960 KB Output is correct
55 Correct 251 ms 55604 KB Output is correct
56 Correct 336 ms 56912 KB Output is correct
57 Correct 234 ms 54008 KB Output is correct
58 Correct 234 ms 54312 KB Output is correct
59 Correct 217 ms 54348 KB Output is correct
60 Correct 44 ms 6224 KB Output is correct
61 Correct 33 ms 7772 KB Output is correct
62 Correct 34 ms 8048 KB Output is correct
63 Correct 138 ms 61144 KB Output is correct
64 Correct 139 ms 62704 KB Output is correct
65 Correct 38 ms 8364 KB Output is correct
66 Correct 290 ms 52792 KB Output is correct
67 Correct 219 ms 53580 KB Output is correct
68 Correct 212 ms 52768 KB Output is correct
69 Correct 39 ms 5864 KB Output is correct
70 Correct 111 ms 20964 KB Output is correct