oj.uz

Submission #914286

# Submission time Handle Problem Language Result Execution time Memory
914286 2024-01-21T14:17:53 Z 3as8 Joker (BOI20_joker) C++14
14 / 100
 622 ms 23460 KB 
#include <bits/stdc++.h>

#define ll long long
#define endl "\n"
#define fastIO cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false);

#define mid ((l + r) / 2)
#define lChild ((index * 2) + 1)
#define rChild ((index * 2) + 2)

using namespace std;

struct node {
    ll u, i;
};

bool bi(vector<vector<node> >& graph, vector<ll>& color, ll startIndex, ll p, ll col, ll l, ll r) {

    color[startIndex] = col;

    ll ret = true;
    for(auto [el, i] : graph[startIndex]) {
        if(el == p || (l <= i && i <= r)) continue;
        if(color[el] == -1) ret &= bi(graph, color, el, startIndex, !col, l, r);


        if(color[el] != -1 && color[el] == col) return false;
        if(color[el] != col) continue;

    }

    return ret;
}

bool check(vector<vector<node> >& graph, ll i, ll l = 0) {

    ll n = graph.size();

    vector<ll> col(n, -1);

    ll ans = true;
    for(int j = 0; j < n; j++) {
        if(col[j] != -1) continue;
        ans &= bi(graph, col, j, -1, 0, l, i);
    }

    return !ans;
}


void solve(ll _) {

    ll n, m, q; cin>>n>>m>>q;

    vector<vector<node> > graph(n);
    for(int i = 0; i < m; i++) {
        ll x, y; cin>>x>>y;
        x--; y--;

        graph[x].push_back({y, i});
        graph[y].push_back({x, i});
    }

    ll l = 0, r = m - 1;
    while(l < r) {

        bool ckB = check(graph, mid - 1), ck = check(graph, mid), ckA = check(graph, mid + 1);

        if(mid - 1 < 0) {
            l = r = 0;
            break;
        }
        
        if(mid + 1 >= m) {
            l = r = m - 1;
            break;
        }
        
        if(ckB != ckA) {
            l = r = mid;
            break;
        }

        if(ck) r = mid - 1;
        else l = mid + 1;
    }

    bool is = check(graph, l);
    ll x = l;
   // cout<<" => "<<l<<" "<<r<<endl;

    for(int i = 0; i < q; i++) {
        ll l, r; cin>>l>>r;
        l--; r--;

        if(n <= 2050 && q <= 2050) {

            cout<<(check(graph, r, l) ? "YES" : "NO")<<endl;
            continue;
        }
        if( x < r) cout<<"NO"<<endl;
        else if(r < x) cout<<"YES"<<endl;
        else {
            cout<<(is ? "YES" : "NO")<<endl;
        }

    }

}

int main() {
    //fastIO

    //freopen("file.in", "r", stdin);
    //freopen("file.out", "w", stdout);

    ll t = 0; solve(t);
}

Compilation message

Joker.cpp: In function 'bool bi(std::vector<std::vector<node> >&, std::vector<long long int>&, long long int, long long int, long long int, long long int, long long int)':
Joker.cpp:22:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   22 |     for(auto [el, i] : graph[startIndex]) {
      |              ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 46 ms 348 KB Output is correct
30 Correct 103 ms 600 KB Output is correct
31 Correct 103 ms 604 KB Output is correct
32 Correct 71 ms 620 KB Output is correct
33 Correct 47 ms 604 KB Output is correct
34 Correct 114 ms 648 KB Output is correct
35 Correct 109 ms 604 KB Output is correct
36 Correct 29 ms 600 KB Output is correct
37 Correct 61 ms 604 KB Output is correct
38 Correct 54 ms 600 KB Output is correct
39 Correct 74 ms 600 KB Output is correct
40 Correct 62 ms 604 KB Output is correct
41 Correct 64 ms 604 KB Output is correct
42 Correct 65 ms 604 KB Output is correct
43 Correct 33 ms 604 KB Output is correct
44 Correct 55 ms 604 KB Output is correct
45 Correct 78 ms 600 KB Output is correct
46 Correct 92 ms 600 KB Output is correct
47 Correct 57 ms 604 KB Output is correct
48 Correct 68 ms 604 KB Output is correct
49 Correct 84 ms 604 KB Output is correct
50 Correct 111 ms 616 KB Output is correct
51 Correct 55 ms 604 KB Output is correct
52 Correct 73 ms 604 KB Output is correct
53 Correct 97 ms 600 KB Output is correct
54 Correct 108 ms 644 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 622 ms 20640 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Incorrect 622 ms 20640 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 46 ms 348 KB Output is correct
30 Correct 103 ms 600 KB Output is correct
31 Correct 103 ms 604 KB Output is correct
32 Correct 71 ms 620 KB Output is correct
33 Correct 47 ms 604 KB Output is correct
34 Correct 114 ms 648 KB Output is correct
35 Correct 109 ms 604 KB Output is correct
36 Correct 29 ms 600 KB Output is correct
37 Correct 61 ms 604 KB Output is correct
38 Correct 54 ms 600 KB Output is correct
39 Correct 74 ms 600 KB Output is correct
40 Correct 62 ms 604 KB Output is correct
41 Correct 64 ms 604 KB Output is correct
42 Correct 65 ms 604 KB Output is correct
43 Correct 33 ms 604 KB Output is correct
44 Correct 55 ms 604 KB Output is correct
45 Correct 78 ms 600 KB Output is correct
46 Correct 92 ms 600 KB Output is correct
47 Correct 57 ms 604 KB Output is correct
48 Correct 68 ms 604 KB Output is correct
49 Correct 84 ms 604 KB Output is correct
50 Correct 111 ms 616 KB Output is correct
51 Correct 55 ms 604 KB Output is correct
52 Correct 73 ms 604 KB Output is correct
53 Correct 97 ms 600 KB Output is correct
54 Correct 108 ms 644 KB Output is correct
55 Incorrect 332 ms 23460 KB Output isn't correct
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 46 ms 348 KB Output is correct
30 Correct 103 ms 600 KB Output is correct
31 Correct 103 ms 604 KB Output is correct
32 Correct 71 ms 620 KB Output is correct
33 Correct 47 ms 604 KB Output is correct
34 Correct 114 ms 648 KB Output is correct
35 Correct 109 ms 604 KB Output is correct
36 Correct 29 ms 600 KB Output is correct
37 Correct 61 ms 604 KB Output is correct
38 Correct 54 ms 600 KB Output is correct
39 Correct 74 ms 600 KB Output is correct
40 Correct 62 ms 604 KB Output is correct
41 Correct 64 ms 604 KB Output is correct
42 Correct 65 ms 604 KB Output is correct
43 Correct 33 ms 604 KB Output is correct
44 Correct 55 ms 604 KB Output is correct
45 Correct 78 ms 600 KB Output is correct
46 Correct 92 ms 600 KB Output is correct
47 Correct 57 ms 604 KB Output is correct
48 Correct 68 ms 604 KB Output is correct
49 Correct 84 ms 604 KB Output is correct
50 Correct 111 ms 616 KB Output is correct
51 Correct 55 ms 604 KB Output is correct
52 Correct 73 ms 604 KB Output is correct
53 Correct 97 ms 600 KB Output is correct
54 Correct 108 ms 644 KB Output is correct
55 Incorrect 622 ms 20640 KB Output isn't correct
56 Halted 0 ms 0 KB -