oj.uz

Submission #837974

# Submission time Handle Problem Language Result Execution time Memory
837974 2023-08-26T01:23:05 Z 1075508020060209tc Joker (BOI20_joker) C++14
49 / 100
 2000 ms 8112 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>>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 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 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 468 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 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 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 468 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 340 KB Output is correct
30 Correct 19 ms 464 KB Output is correct
31 Correct 18 ms 468 KB Output is correct
32 Correct 11 ms 472 KB Output is correct
33 Correct 7 ms 468 KB Output is correct
34 Correct 19 ms 472 KB Output is correct
35 Correct 25 ms 468 KB Output is correct
36 Correct 23 ms 468 KB Output is correct
37 Correct 40 ms 480 KB Output is correct
38 Correct 49 ms 476 KB Output is correct
39 Correct 21 ms 468 KB Output is correct
40 Correct 13 ms 460 KB Output is correct
41 Correct 12 ms 512 KB Output is correct
42 Correct 12 ms 468 KB Output is correct
43 Correct 14 ms 460 KB Output is correct
44 Correct 15 ms 468 KB Output is correct
45 Correct 16 ms 472 KB Output is correct
46 Correct 21 ms 476 KB Output is correct
47 Correct 22 ms 468 KB Output is correct
48 Correct 17 ms 468 KB Output is correct
49 Correct 18 ms 460 KB Output is correct
50 Correct 25 ms 480 KB Output is correct
51 Correct 15 ms 464 KB Output is correct
52 Correct 15 ms 468 KB Output is correct
53 Correct 16 ms 472 KB Output is correct
54 Correct 25 ms 472 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 167 ms 6796 KB Output is correct
4 Correct 161 ms 7912 KB Output is correct
5 Correct 173 ms 7680 KB Output is correct
6 Correct 170 ms 6728 KB Output is correct
7 Correct 170 ms 6808 KB Output is correct
8 Correct 151 ms 6484 KB Output is correct
9 Correct 148 ms 6940 KB Output is correct
10 Correct 171 ms 8012 KB Output is correct
11 Correct 165 ms 6696 KB Output is correct
12 Correct 170 ms 7628 KB Output is correct
13 Correct 163 ms 5744 KB Output is correct
14 Correct 177 ms 6332 KB Output is correct
15 Correct 175 ms 7220 KB Output is correct
16 Correct 171 ms 7880 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 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 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 468 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 167 ms 6796 KB Output is correct
30 Correct 161 ms 7912 KB Output is correct
31 Correct 173 ms 7680 KB Output is correct
32 Correct 170 ms 6728 KB Output is correct
33 Correct 170 ms 6808 KB Output is correct
34 Correct 151 ms 6484 KB Output is correct
35 Correct 148 ms 6940 KB Output is correct
36 Correct 171 ms 8012 KB Output is correct
37 Correct 165 ms 6696 KB Output is correct
38 Correct 170 ms 7628 KB Output is correct
39 Correct 163 ms 5744 KB Output is correct
40 Correct 177 ms 6332 KB Output is correct
41 Correct 175 ms 7220 KB Output is correct
42 Correct 171 ms 7880 KB Output is correct
43 Correct 647 ms 6696 KB Output is correct
44 Correct 1473 ms 7856 KB Output is correct
45 Correct 1343 ms 7856 KB Output is correct
46 Correct 231 ms 6812 KB Output is correct
47 Correct 291 ms 6824 KB Output is correct
48 Correct 528 ms 6956 KB Output is correct
49 Correct 835 ms 8112 KB Output is correct
50 Correct 863 ms 6460 KB Output is correct
51 Correct 777 ms 7164 KB Output is correct
52 Correct 709 ms 7856 KB Output is correct
53 Correct 489 ms 5880 KB Output is correct
54 Correct 527 ms 6584 KB Output is correct
55 Correct 691 ms 7292 KB Output is correct
56 Correct 872 ms 7852 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 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 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 468 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 340 KB Output is correct
30 Correct 19 ms 464 KB Output is correct
31 Correct 18 ms 468 KB Output is correct
32 Correct 11 ms 472 KB Output is correct
33 Correct 7 ms 468 KB Output is correct
34 Correct 19 ms 472 KB Output is correct
35 Correct 25 ms 468 KB Output is correct
36 Correct 23 ms 468 KB Output is correct
37 Correct 40 ms 480 KB Output is correct
38 Correct 49 ms 476 KB Output is correct
39 Correct 21 ms 468 KB Output is correct
40 Correct 13 ms 460 KB Output is correct
41 Correct 12 ms 512 KB Output is correct
42 Correct 12 ms 468 KB Output is correct
43 Correct 14 ms 460 KB Output is correct
44 Correct 15 ms 468 KB Output is correct
45 Correct 16 ms 472 KB Output is correct
46 Correct 21 ms 476 KB Output is correct
47 Correct 22 ms 468 KB Output is correct
48 Correct 17 ms 468 KB Output is correct
49 Correct 18 ms 460 KB Output is correct
50 Correct 25 ms 480 KB Output is correct
51 Correct 15 ms 464 KB Output is correct
52 Correct 15 ms 468 KB Output is correct
53 Correct 16 ms 472 KB Output is correct
54 Correct 25 ms 472 KB Output is correct
55 Execution timed out 2081 ms 5012 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 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 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 468 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 340 KB Output is correct
30 Correct 19 ms 464 KB Output is correct
31 Correct 18 ms 468 KB Output is correct
32 Correct 11 ms 472 KB Output is correct
33 Correct 7 ms 468 KB Output is correct
34 Correct 19 ms 472 KB Output is correct
35 Correct 25 ms 468 KB Output is correct
36 Correct 23 ms 468 KB Output is correct
37 Correct 40 ms 480 KB Output is correct
38 Correct 49 ms 476 KB Output is correct
39 Correct 21 ms 468 KB Output is correct
40 Correct 13 ms 460 KB Output is correct
41 Correct 12 ms 512 KB Output is correct
42 Correct 12 ms 468 KB Output is correct
43 Correct 14 ms 460 KB Output is correct
44 Correct 15 ms 468 KB Output is correct
45 Correct 16 ms 472 KB Output is correct
46 Correct 21 ms 476 KB Output is correct
47 Correct 22 ms 468 KB Output is correct
48 Correct 17 ms 468 KB Output is correct
49 Correct 18 ms 460 KB Output is correct
50 Correct 25 ms 480 KB Output is correct
51 Correct 15 ms 464 KB Output is correct
52 Correct 15 ms 468 KB Output is correct
53 Correct 16 ms 472 KB Output is correct
54 Correct 25 ms 472 KB Output is correct
55 Correct 167 ms 6796 KB Output is correct
56 Correct 161 ms 7912 KB Output is correct
57 Correct 173 ms 7680 KB Output is correct
58 Correct 170 ms 6728 KB Output is correct
59 Correct 170 ms 6808 KB Output is correct
60 Correct 151 ms 6484 KB Output is correct
61 Correct 148 ms 6940 KB Output is correct
62 Correct 171 ms 8012 KB Output is correct
63 Correct 165 ms 6696 KB Output is correct
64 Correct 170 ms 7628 KB Output is correct
65 Correct 163 ms 5744 KB Output is correct
66 Correct 177 ms 6332 KB Output is correct
67 Correct 175 ms 7220 KB Output is correct
68 Correct 171 ms 7880 KB Output is correct
69 Correct 647 ms 6696 KB Output is correct
70 Correct 1473 ms 7856 KB Output is correct
71 Correct 1343 ms 7856 KB Output is correct
72 Correct 231 ms 6812 KB Output is correct
73 Correct 291 ms 6824 KB Output is correct
74 Correct 528 ms 6956 KB Output is correct
75 Correct 835 ms 8112 KB Output is correct
76 Correct 863 ms 6460 KB Output is correct
77 Correct 777 ms 7164 KB Output is correct
78 Correct 709 ms 7856 KB Output is correct
79 Correct 489 ms 5880 KB Output is correct
80 Correct 527 ms 6584 KB Output is correct
81 Correct 691 ms 7292 KB Output is correct
82 Correct 872 ms 7852 KB Output is correct
83 Execution timed out 2081 ms 5012 KB Time limit exceeded
84 Halted 0 ms 0 KB -