oj.uz

Submission #649810

# Submission time Handle Problem Language Result Execution time Memory
649810 2022-10-11T11:05:14 Z DJeniUp Joker (BOI20_joker) C++17
49 / 100
 2000 ms 10504 KB 
#include "bits/stdc++.h"
//#pragma GCC optimize("O3")

using namespace std;

typedef int ll;
typedef unsigned long long ull;
typedef pair<ll,ll>pairll;
typedef long double ld;

#define fr first
#define sc second
#define pb push_back
#define INF 100000000007
#define endl '\n'
#define MOD 998244353
#define N 200007

ll n,m,q,p[N],res[N],h[N],f,k;

struct Q{
    ll l,r;
}o[N];

struct D{
    ll l,r;
}d[N];

set<ll>s;

ll P(ll x){
    if(p[x]!=x){
        ll g=P(p[x]);
        h[x]+=h[p[x]];
        h[x]%=2;
        p[x]=g;
    }
    return p[x];
}

ll H(ll x){
    ll r1=0;
    while(p[x]!=x){
        r1+=h[x];
        x=p[x];
    }
    return r1;
}

void A(ll x,ll y){
    if(rand()%2)swap(x,y);
    ll x1=P(x);
    ll y1=P(y);
    h[x1]=H(x)+1+H(y);
    h[x1]%=2;
    p[x1]=y1;
    return ;
}

int main(){
    
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    //cin>>n>>m>>q;
    scanf("%d %d %d", &n, &m, &q);
    //s.insert(0);
    for(int i=1;i<=m;i++){
        //cin>>d[i].l>>d[i].r;
        scanf("%d %d", &d[i].l, &d[i].r);
    }
    for(int i=1;i<=q;i++){
        //cin>>o[i].l>>o[i].r;
        scanf("%d %d", &o[i].l, &o[i].r);
        s.insert(o[i].l-1);
    }
    for(auto it:s){
        res[it]=0;
        for(int i=1;i<=n;i++){
            p[i]=i;
            h[i]=0;
        }
        for(int i=1;i<=it;i++){
            if(P(d[i].l)!=P(d[i].r)){
                A(d[i].l,d[i].r);
            }else if(H(d[i].l)%2==H(d[i].r)%2){
                res[it]=m+1;
            }
        }
        if(res[it]!=0)continue;
        for(int i=m;i>=it;i--){
            if(P(d[i].l)==P(d[i].r) && H(d[i].l)%2==H(d[i].r)%2){
                res[it]=i;
                break;
            }else if(P(d[i].l)!=P(d[i].r))A(d[i].l,d[i].r);
        }
    }
    
    for(int i=1;i<=q;i++){
        
        if(res[o[i].l-1]>o[i].r)printf("YES\n");
        else printf("NO\n");
    }
    
    
    return 0;
}

Compilation message

Joker.cpp: In function 'int main()':
Joker.cpp:66:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |     scanf("%d %d %d", &n, &m, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:70:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |         scanf("%d %d", &d[i].l, &d[i].r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:74:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |         scanf("%d %d", &o[i].l, &o[i].r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 38 ms 412 KB Output is correct
30 Correct 76 ms 560 KB Output is correct
31 Correct 88 ms 340 KB Output is correct
32 Correct 75 ms 436 KB Output is correct
33 Correct 66 ms 456 KB Output is correct
34 Correct 70 ms 440 KB Output is correct
35 Correct 78 ms 456 KB Output is correct
36 Correct 61 ms 432 KB Output is correct
37 Correct 107 ms 444 KB Output is correct
38 Correct 119 ms 440 KB Output is correct
39 Correct 67 ms 460 KB Output is correct
40 Correct 55 ms 452 KB Output is correct
41 Correct 59 ms 436 KB Output is correct
42 Correct 69 ms 452 KB Output is correct
43 Correct 66 ms 448 KB Output is correct
44 Correct 69 ms 436 KB Output is correct
45 Correct 70 ms 340 KB Output is correct
46 Correct 81 ms 452 KB Output is correct
47 Correct 73 ms 448 KB Output is correct
48 Correct 72 ms 460 KB Output is correct
49 Correct 69 ms 456 KB Output is correct
50 Correct 74 ms 340 KB Output is correct
51 Correct 70 ms 452 KB Output is correct
52 Correct 77 ms 340 KB Output is correct
53 Correct 76 ms 448 KB Output is correct
54 Correct 79 ms 448 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 79 ms 5656 KB Output is correct
4 Correct 98 ms 6056 KB Output is correct
5 Correct 89 ms 5488 KB Output is correct
6 Correct 81 ms 5148 KB Output is correct
7 Correct 85 ms 4784 KB Output is correct
8 Correct 87 ms 4688 KB Output is correct
9 Correct 101 ms 4940 KB Output is correct
10 Correct 82 ms 5684 KB Output is correct
11 Correct 85 ms 4956 KB Output is correct
12 Correct 83 ms 5972 KB Output is correct
13 Correct 91 ms 4172 KB Output is correct
14 Correct 80 ms 4432 KB Output is correct
15 Correct 84 ms 5180 KB Output is correct
16 Correct 90 ms 5520 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 79 ms 5656 KB Output is correct
30 Correct 98 ms 6056 KB Output is correct
31 Correct 89 ms 5488 KB Output is correct
32 Correct 81 ms 5148 KB Output is correct
33 Correct 85 ms 4784 KB Output is correct
34 Correct 87 ms 4688 KB Output is correct
35 Correct 101 ms 4940 KB Output is correct
36 Correct 82 ms 5684 KB Output is correct
37 Correct 85 ms 4956 KB Output is correct
38 Correct 83 ms 5972 KB Output is correct
39 Correct 91 ms 4172 KB Output is correct
40 Correct 80 ms 4432 KB Output is correct
41 Correct 84 ms 5180 KB Output is correct
42 Correct 90 ms 5520 KB Output is correct
43 Correct 914 ms 5564 KB Output is correct
44 Correct 1988 ms 6016 KB Output is correct
45 Correct 1877 ms 9944 KB Output is correct
46 Correct 157 ms 9484 KB Output is correct
47 Correct 176 ms 9128 KB Output is correct
48 Correct 793 ms 8840 KB Output is correct
49 Correct 1312 ms 9824 KB Output is correct
50 Correct 1394 ms 9148 KB Output is correct
51 Correct 1316 ms 9716 KB Output is correct
52 Correct 1193 ms 10504 KB Output is correct
53 Correct 913 ms 8496 KB Output is correct
54 Correct 717 ms 9164 KB Output is correct
55 Correct 1060 ms 9640 KB Output is correct
56 Correct 1279 ms 10000 KB Output is correct

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 38 ms 412 KB Output is correct
30 Correct 76 ms 560 KB Output is correct
31 Correct 88 ms 340 KB Output is correct
32 Correct 75 ms 436 KB Output is correct
33 Correct 66 ms 456 KB Output is correct
34 Correct 70 ms 440 KB Output is correct
35 Correct 78 ms 456 KB Output is correct
36 Correct 61 ms 432 KB Output is correct
37 Correct 107 ms 444 KB Output is correct
38 Correct 119 ms 440 KB Output is correct
39 Correct 67 ms 460 KB Output is correct
40 Correct 55 ms 452 KB Output is correct
41 Correct 59 ms 436 KB Output is correct
42 Correct 69 ms 452 KB Output is correct
43 Correct 66 ms 448 KB Output is correct
44 Correct 69 ms 436 KB Output is correct
45 Correct 70 ms 340 KB Output is correct
46 Correct 81 ms 452 KB Output is correct
47 Correct 73 ms 448 KB Output is correct
48 Correct 72 ms 460 KB Output is correct
49 Correct 69 ms 456 KB Output is correct
50 Correct 74 ms 340 KB Output is correct
51 Correct 70 ms 452 KB Output is correct
52 Correct 77 ms 340 KB Output is correct
53 Correct 76 ms 448 KB Output is correct
54 Correct 79 ms 448 KB Output is correct
55 Execution timed out 2092 ms 3004 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 38 ms 412 KB Output is correct
30 Correct 76 ms 560 KB Output is correct
31 Correct 88 ms 340 KB Output is correct
32 Correct 75 ms 436 KB Output is correct
33 Correct 66 ms 456 KB Output is correct
34 Correct 70 ms 440 KB Output is correct
35 Correct 78 ms 456 KB Output is correct
36 Correct 61 ms 432 KB Output is correct
37 Correct 107 ms 444 KB Output is correct
38 Correct 119 ms 440 KB Output is correct
39 Correct 67 ms 460 KB Output is correct
40 Correct 55 ms 452 KB Output is correct
41 Correct 59 ms 436 KB Output is correct
42 Correct 69 ms 452 KB Output is correct
43 Correct 66 ms 448 KB Output is correct
44 Correct 69 ms 436 KB Output is correct
45 Correct 70 ms 340 KB Output is correct
46 Correct 81 ms 452 KB Output is correct
47 Correct 73 ms 448 KB Output is correct
48 Correct 72 ms 460 KB Output is correct
49 Correct 69 ms 456 KB Output is correct
50 Correct 74 ms 340 KB Output is correct
51 Correct 70 ms 452 KB Output is correct
52 Correct 77 ms 340 KB Output is correct
53 Correct 76 ms 448 KB Output is correct
54 Correct 79 ms 448 KB Output is correct
55 Correct 79 ms 5656 KB Output is correct
56 Correct 98 ms 6056 KB Output is correct
57 Correct 89 ms 5488 KB Output is correct
58 Correct 81 ms 5148 KB Output is correct
59 Correct 85 ms 4784 KB Output is correct
60 Correct 87 ms 4688 KB Output is correct
61 Correct 101 ms 4940 KB Output is correct
62 Correct 82 ms 5684 KB Output is correct
63 Correct 85 ms 4956 KB Output is correct
64 Correct 83 ms 5972 KB Output is correct
65 Correct 91 ms 4172 KB Output is correct
66 Correct 80 ms 4432 KB Output is correct
67 Correct 84 ms 5180 KB Output is correct
68 Correct 90 ms 5520 KB Output is correct
69 Correct 914 ms 5564 KB Output is correct
70 Correct 1988 ms 6016 KB Output is correct
71 Correct 1877 ms 9944 KB Output is correct
72 Correct 157 ms 9484 KB Output is correct
73 Correct 176 ms 9128 KB Output is correct
74 Correct 793 ms 8840 KB Output is correct
75 Correct 1312 ms 9824 KB Output is correct
76 Correct 1394 ms 9148 KB Output is correct
77 Correct 1316 ms 9716 KB Output is correct
78 Correct 1193 ms 10504 KB Output is correct
79 Correct 913 ms 8496 KB Output is correct
80 Correct 717 ms 9164 KB Output is correct
81 Correct 1060 ms 9640 KB Output is correct
82 Correct 1279 ms 10000 KB Output is correct
83 Execution timed out 2092 ms 3004 KB Time limit exceeded
84 Halted 0 ms 0 KB -