oj.uz

Submission #837997

# Submission time Handle Problem Language Result Execution time Memory
837997 2023-08-26T03:50:16 Z 1075508020060209tc Joker (BOI20_joker) C++14
49 / 100
 2000 ms 8140 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
 
#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();}
 
}
 int all;
void dolid(int lid){
precalc();
isbip=1;
lpl[lid]=0;
for(int i=m+lid-1+(lid==0);i>=lid-1+2*(lid==0);i--){
    mrg(ar[i],br[i]);
    if(!isbip){
        lpl[lid]=i;break;
    }
}
if(lid==0&&lpl[lid]==0){
    all=1;
}
}
 
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]);
}
dolid(0);
if(!all){
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 1 ms 464 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 360 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 1 ms 464 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 360 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 1 ms 468 KB Output is correct
30 Correct 21 ms 468 KB Output is correct
31 Correct 17 ms 468 KB Output is correct
32 Correct 11 ms 468 KB Output is correct
33 Correct 6 ms 468 KB Output is correct
34 Correct 19 ms 468 KB Output is correct
35 Correct 22 ms 468 KB Output is correct
36 Correct 18 ms 468 KB Output is correct
37 Correct 45 ms 500 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 23 ms 484 KB Output is correct
40 Correct 13 ms 468 KB Output is correct
41 Correct 12 ms 468 KB Output is correct
42 Correct 13 ms 468 KB Output is correct
43 Correct 15 ms 468 KB Output is correct
44 Correct 17 ms 596 KB Output is correct
45 Correct 17 ms 468 KB Output is correct
46 Correct 22 ms 468 KB Output is correct
47 Correct 19 ms 468 KB Output is correct
48 Correct 18 ms 496 KB Output is correct
49 Correct 19 ms 468 KB Output is correct
50 Correct 29 ms 684 KB Output is correct
51 Correct 15 ms 468 KB Output is correct
52 Correct 16 ms 488 KB Output is correct
53 Correct 17 ms 468 KB Output is correct
54 Correct 22 ms 468 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 464 KB Output is correct
3 Correct 50 ms 6732 KB Output is correct
4 Correct 52 ms 7884 KB Output is correct
5 Correct 51 ms 7756 KB Output is correct
6 Correct 52 ms 6732 KB Output is correct
7 Correct 62 ms 6764 KB Output is correct
8 Correct 50 ms 6476 KB Output is correct
9 Correct 55 ms 6852 KB Output is correct
10 Correct 54 ms 8012 KB Output is correct
11 Correct 64 ms 6704 KB Output is correct
12 Correct 56 ms 7756 KB Output is correct
13 Correct 54 ms 5836 KB Output is correct
14 Correct 53 ms 6264 KB Output is correct
15 Correct 55 ms 7192 KB Output is correct
16 Correct 56 ms 7884 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 464 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 360 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 50 ms 6732 KB Output is correct
30 Correct 52 ms 7884 KB Output is correct
31 Correct 51 ms 7756 KB Output is correct
32 Correct 52 ms 6732 KB Output is correct
33 Correct 62 ms 6764 KB Output is correct
34 Correct 50 ms 6476 KB Output is correct
35 Correct 55 ms 6852 KB Output is correct
36 Correct 54 ms 8012 KB Output is correct
37 Correct 64 ms 6704 KB Output is correct
38 Correct 56 ms 7756 KB Output is correct
39 Correct 54 ms 5836 KB Output is correct
40 Correct 53 ms 6264 KB Output is correct
41 Correct 55 ms 7192 KB Output is correct
42 Correct 56 ms 7884 KB Output is correct
43 Correct 475 ms 6720 KB Output is correct
44 Correct 63 ms 7884 KB Output is correct
45 Correct 1104 ms 7880 KB Output is correct
46 Correct 109 ms 6776 KB Output is correct
47 Correct 119 ms 6848 KB Output is correct
48 Correct 396 ms 6980 KB Output is correct
49 Correct 687 ms 8140 KB Output is correct
50 Correct 669 ms 6480 KB Output is correct
51 Correct 625 ms 7188 KB Output is correct
52 Correct 588 ms 7880 KB Output is correct
53 Correct 327 ms 5908 KB Output is correct
54 Correct 375 ms 6612 KB Output is correct
55 Correct 533 ms 7316 KB Output is correct
56 Correct 685 ms 7884 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 464 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 360 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 1 ms 468 KB Output is correct
30 Correct 21 ms 468 KB Output is correct
31 Correct 17 ms 468 KB Output is correct
32 Correct 11 ms 468 KB Output is correct
33 Correct 6 ms 468 KB Output is correct
34 Correct 19 ms 468 KB Output is correct
35 Correct 22 ms 468 KB Output is correct
36 Correct 18 ms 468 KB Output is correct
37 Correct 45 ms 500 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 23 ms 484 KB Output is correct
40 Correct 13 ms 468 KB Output is correct
41 Correct 12 ms 468 KB Output is correct
42 Correct 13 ms 468 KB Output is correct
43 Correct 15 ms 468 KB Output is correct
44 Correct 17 ms 596 KB Output is correct
45 Correct 17 ms 468 KB Output is correct
46 Correct 22 ms 468 KB Output is correct
47 Correct 19 ms 468 KB Output is correct
48 Correct 18 ms 496 KB Output is correct
49 Correct 19 ms 468 KB Output is correct
50 Correct 29 ms 684 KB Output is correct
51 Correct 15 ms 468 KB Output is correct
52 Correct 16 ms 488 KB Output is correct
53 Correct 17 ms 468 KB Output is correct
54 Correct 22 ms 468 KB Output is correct
55 Execution timed out 2044 ms 5056 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 464 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 360 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 1 ms 468 KB Output is correct
30 Correct 21 ms 468 KB Output is correct
31 Correct 17 ms 468 KB Output is correct
32 Correct 11 ms 468 KB Output is correct
33 Correct 6 ms 468 KB Output is correct
34 Correct 19 ms 468 KB Output is correct
35 Correct 22 ms 468 KB Output is correct
36 Correct 18 ms 468 KB Output is correct
37 Correct 45 ms 500 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 23 ms 484 KB Output is correct
40 Correct 13 ms 468 KB Output is correct
41 Correct 12 ms 468 KB Output is correct
42 Correct 13 ms 468 KB Output is correct
43 Correct 15 ms 468 KB Output is correct
44 Correct 17 ms 596 KB Output is correct
45 Correct 17 ms 468 KB Output is correct
46 Correct 22 ms 468 KB Output is correct
47 Correct 19 ms 468 KB Output is correct
48 Correct 18 ms 496 KB Output is correct
49 Correct 19 ms 468 KB Output is correct
50 Correct 29 ms 684 KB Output is correct
51 Correct 15 ms 468 KB Output is correct
52 Correct 16 ms 488 KB Output is correct
53 Correct 17 ms 468 KB Output is correct
54 Correct 22 ms 468 KB Output is correct
55 Correct 50 ms 6732 KB Output is correct
56 Correct 52 ms 7884 KB Output is correct
57 Correct 51 ms 7756 KB Output is correct
58 Correct 52 ms 6732 KB Output is correct
59 Correct 62 ms 6764 KB Output is correct
60 Correct 50 ms 6476 KB Output is correct
61 Correct 55 ms 6852 KB Output is correct
62 Correct 54 ms 8012 KB Output is correct
63 Correct 64 ms 6704 KB Output is correct
64 Correct 56 ms 7756 KB Output is correct
65 Correct 54 ms 5836 KB Output is correct
66 Correct 53 ms 6264 KB Output is correct
67 Correct 55 ms 7192 KB Output is correct
68 Correct 56 ms 7884 KB Output is correct
69 Correct 475 ms 6720 KB Output is correct
70 Correct 63 ms 7884 KB Output is correct
71 Correct 1104 ms 7880 KB Output is correct
72 Correct 109 ms 6776 KB Output is correct
73 Correct 119 ms 6848 KB Output is correct
74 Correct 396 ms 6980 KB Output is correct
75 Correct 687 ms 8140 KB Output is correct
76 Correct 669 ms 6480 KB Output is correct
77 Correct 625 ms 7188 KB Output is correct
78 Correct 588 ms 7880 KB Output is correct
79 Correct 327 ms 5908 KB Output is correct
80 Correct 375 ms 6612 KB Output is correct
81 Correct 533 ms 7316 KB Output is correct
82 Correct 685 ms 7884 KB Output is correct
83 Execution timed out 2044 ms 5056 KB Time limit exceeded
84 Halted 0 ms 0 KB -