oj.uz

Submission #837975

# Submission time Handle Problem Language Result Execution time Memory
837975 2023-08-26T01:23:38 Z 1075508020060209tc Joker (BOI20_joker) C++14
49 / 100
 2000 ms 8136 KB 
#include <bits/stdc++.h>
using namespace std;
int n;int m;int Q;
int ar[400005];
int br[400005];
int uf[200005];
int isbip;
int sz[200005];
int ufv[200005];
stack<int>stk;
stack<int>stkv;
stack<int>stkbp;
int finv(int x){
if(uf[x]==x){return 0;}
return (ufv[x]+finv(uf[x]))&1;
}
int fin(int x){
if(uf[x]==x){return x;}
int v=(ufv[x]+finv(uf[x]))&1;
ufv[x]=v;
uf[x]=fin(uf[x]);
return uf[x];
}

void mrg(int a,int b){
int pa=fin(a);int pb=fin(b);
if(pa==pb){
  //  stk.push(0);stkbp.push(isbip);
    if(finv(a)==finv(b)){
        isbip=0;
    }
    return;
}
//stkbp.push(isbip);
if(sz[pa]<sz[pb]){swap(pa,pb);swap(a,b);}
int va=finv(a);int vb=finv(b);
if(va==vb){
   // stkv.push(1);
    ufv[pb]=1;
    uf[pb]=pa;
    sz[pa]+=sz[pb];
}else{
    //stkv.push(0);
    ufv[pb]=0;
    uf[pb]=pa;
    sz[pa]+=sz[pb];
}
//stk.push(pb);
}
void rollback(){
int pb=stk.top();
if(pb==0){
    stk.pop();//stkv.pop();
    isbip=stkbp.top();
    stkbp.pop();
    return;
}
isbip=stkbp.top();
stk.pop();stkbp.pop();
int pa=uf[pb];
sz[pa]-=sz[pb];
uf[pb]=pb;
ufv[pb]=0;
}
int lar[200005];int rar[200005];int lpl[200005];

void precalc(){
for(int i=1;i<=n;i++){
    uf[i]=i;
    ufv[i]=0;
    sz[i]=1;
}
while(stk.size()){stk.pop();}
while(stkbp.size()){stkbp.pop();}

}

void dolid(int lid){
precalc();
isbip=1;
lpl[lid]=0;
for(int i=m+lid-1;i>=lid-1;i--){
    mrg(ar[i],br[i]);
    if(!isbip){
        lpl[lid]=i;break;
    }
}
}

signed main(){
cin.tie(0);
ios_base::sync_with_stdio(0);
    
cin>>n>>m>>Q;
for(int i=1;i<=m;i++){
    cin>>ar[i]>>br[i];
    ar[i+m]=ar[i];
    br[i+m]=br[i];
}
set<int>st;
for(int i=1;i<=Q;i++){
    cin>>lar[i]>>rar[i];
    st.insert(lar[i]);
}
for(auto it=st.begin();it!=st.end();it++){
    int v=*it;
    dolid(v);
}
for(int i=1;i<=Q;i++){
    if(rar[i]<lpl[lar[i]]){
        cout<<"YES\n";
    }else{
        cout<<"NO\n";
    }
}

}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 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 0 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 1 ms 340 KB Output is correct
15 Correct 1 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 1 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 0 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 0 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 1 ms 340 KB Output is correct
15 Correct 1 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 1 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 13 ms 468 KB Output is correct
30 Correct 18 ms 492 KB Output is correct
31 Correct 15 ms 488 KB Output is correct
32 Correct 10 ms 468 KB Output is correct
33 Correct 6 ms 468 KB Output is correct
34 Correct 18 ms 504 KB Output is correct
35 Correct 20 ms 500 KB Output is correct
36 Correct 22 ms 468 KB Output is correct
37 Correct 41 ms 496 KB Output is correct
38 Correct 48 ms 500 KB Output is correct
39 Correct 20 ms 468 KB Output is correct
40 Correct 12 ms 492 KB Output is correct
41 Correct 12 ms 468 KB Output is correct
42 Correct 11 ms 468 KB Output is correct
43 Correct 13 ms 468 KB Output is correct
44 Correct 14 ms 492 KB Output is correct
45 Correct 15 ms 492 KB Output is correct
46 Correct 20 ms 496 KB Output is correct
47 Correct 18 ms 468 KB Output is correct
48 Correct 16 ms 492 KB Output is correct
49 Correct 17 ms 500 KB Output is correct
50 Correct 23 ms 496 KB Output is correct
51 Correct 14 ms 468 KB Output is correct
52 Correct 14 ms 488 KB Output is correct
53 Correct 15 ms 468 KB Output is correct
54 Correct 20 ms 500 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 0 ms 340 KB Output is correct
3 Correct 56 ms 6872 KB Output is correct
4 Correct 53 ms 7900 KB Output is correct
5 Correct 50 ms 7684 KB Output is correct
6 Correct 61 ms 6744 KB Output is correct
7 Correct 53 ms 6820 KB Output is correct
8 Correct 51 ms 6424 KB Output is correct
9 Correct 60 ms 6880 KB Output is correct
10 Correct 51 ms 8016 KB Output is correct
11 Correct 51 ms 6732 KB Output is correct
12 Correct 53 ms 7704 KB Output is correct
13 Correct 49 ms 5780 KB Output is correct
14 Correct 50 ms 6352 KB Output is correct
15 Correct 52 ms 7296 KB Output is correct
16 Correct 53 ms 7904 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 0 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 0 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 1 ms 340 KB Output is correct
15 Correct 1 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 1 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 56 ms 6872 KB Output is correct
30 Correct 53 ms 7900 KB Output is correct
31 Correct 50 ms 7684 KB Output is correct
32 Correct 61 ms 6744 KB Output is correct
33 Correct 53 ms 6820 KB Output is correct
34 Correct 51 ms 6424 KB Output is correct
35 Correct 60 ms 6880 KB Output is correct
36 Correct 51 ms 8016 KB Output is correct
37 Correct 51 ms 6732 KB Output is correct
38 Correct 53 ms 7704 KB Output is correct
39 Correct 49 ms 5780 KB Output is correct
40 Correct 50 ms 6352 KB Output is correct
41 Correct 52 ms 7296 KB Output is correct
42 Correct 53 ms 7904 KB Output is correct
43 Correct 534 ms 6720 KB Output is correct
44 Correct 1298 ms 7880 KB Output is correct
45 Correct 1167 ms 7884 KB Output is correct
46 Correct 109 ms 6840 KB Output is correct
47 Correct 120 ms 6848 KB Output is correct
48 Correct 420 ms 6976 KB Output is correct
49 Correct 699 ms 8136 KB Output is correct
50 Correct 730 ms 6488 KB Output is correct
51 Correct 639 ms 7248 KB Output is correct
52 Correct 571 ms 7968 KB Output is correct
53 Correct 378 ms 5836 KB Output is correct
54 Correct 400 ms 6700 KB Output is correct
55 Correct 580 ms 7320 KB Output is correct
56 Correct 759 ms 7876 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 0 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 0 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 1 ms 340 KB Output is correct
15 Correct 1 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 1 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 13 ms 468 KB Output is correct
30 Correct 18 ms 492 KB Output is correct
31 Correct 15 ms 488 KB Output is correct
32 Correct 10 ms 468 KB Output is correct
33 Correct 6 ms 468 KB Output is correct
34 Correct 18 ms 504 KB Output is correct
35 Correct 20 ms 500 KB Output is correct
36 Correct 22 ms 468 KB Output is correct
37 Correct 41 ms 496 KB Output is correct
38 Correct 48 ms 500 KB Output is correct
39 Correct 20 ms 468 KB Output is correct
40 Correct 12 ms 492 KB Output is correct
41 Correct 12 ms 468 KB Output is correct
42 Correct 11 ms 468 KB Output is correct
43 Correct 13 ms 468 KB Output is correct
44 Correct 14 ms 492 KB Output is correct
45 Correct 15 ms 492 KB Output is correct
46 Correct 20 ms 496 KB Output is correct
47 Correct 18 ms 468 KB Output is correct
48 Correct 16 ms 492 KB Output is correct
49 Correct 17 ms 500 KB Output is correct
50 Correct 23 ms 496 KB Output is correct
51 Correct 14 ms 468 KB Output is correct
52 Correct 14 ms 488 KB Output is correct
53 Correct 15 ms 468 KB Output is correct
54 Correct 20 ms 500 KB Output is correct
55 Execution timed out 2073 ms 4988 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 0 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 0 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 1 ms 340 KB Output is correct
15 Correct 1 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 1 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 13 ms 468 KB Output is correct
30 Correct 18 ms 492 KB Output is correct
31 Correct 15 ms 488 KB Output is correct
32 Correct 10 ms 468 KB Output is correct
33 Correct 6 ms 468 KB Output is correct
34 Correct 18 ms 504 KB Output is correct
35 Correct 20 ms 500 KB Output is correct
36 Correct 22 ms 468 KB Output is correct
37 Correct 41 ms 496 KB Output is correct
38 Correct 48 ms 500 KB Output is correct
39 Correct 20 ms 468 KB Output is correct
40 Correct 12 ms 492 KB Output is correct
41 Correct 12 ms 468 KB Output is correct
42 Correct 11 ms 468 KB Output is correct
43 Correct 13 ms 468 KB Output is correct
44 Correct 14 ms 492 KB Output is correct
45 Correct 15 ms 492 KB Output is correct
46 Correct 20 ms 496 KB Output is correct
47 Correct 18 ms 468 KB Output is correct
48 Correct 16 ms 492 KB Output is correct
49 Correct 17 ms 500 KB Output is correct
50 Correct 23 ms 496 KB Output is correct
51 Correct 14 ms 468 KB Output is correct
52 Correct 14 ms 488 KB Output is correct
53 Correct 15 ms 468 KB Output is correct
54 Correct 20 ms 500 KB Output is correct
55 Correct 56 ms 6872 KB Output is correct
56 Correct 53 ms 7900 KB Output is correct
57 Correct 50 ms 7684 KB Output is correct
58 Correct 61 ms 6744 KB Output is correct
59 Correct 53 ms 6820 KB Output is correct
60 Correct 51 ms 6424 KB Output is correct
61 Correct 60 ms 6880 KB Output is correct
62 Correct 51 ms 8016 KB Output is correct
63 Correct 51 ms 6732 KB Output is correct
64 Correct 53 ms 7704 KB Output is correct
65 Correct 49 ms 5780 KB Output is correct
66 Correct 50 ms 6352 KB Output is correct
67 Correct 52 ms 7296 KB Output is correct
68 Correct 53 ms 7904 KB Output is correct
69 Correct 534 ms 6720 KB Output is correct
70 Correct 1298 ms 7880 KB Output is correct
71 Correct 1167 ms 7884 KB Output is correct
72 Correct 109 ms 6840 KB Output is correct
73 Correct 120 ms 6848 KB Output is correct
74 Correct 420 ms 6976 KB Output is correct
75 Correct 699 ms 8136 KB Output is correct
76 Correct 730 ms 6488 KB Output is correct
77 Correct 639 ms 7248 KB Output is correct
78 Correct 571 ms 7968 KB Output is correct
79 Correct 378 ms 5836 KB Output is correct
80 Correct 400 ms 6700 KB Output is correct
81 Correct 580 ms 7320 KB Output is correct
82 Correct 759 ms 7876 KB Output is correct
83 Execution timed out 2073 ms 4988 KB Time limit exceeded
84 Halted 0 ms 0 KB -