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Submission #837973

# Submission time Handle Problem Language Result Execution time Memory
837973 2023-08-26T01:20:59 Z 1075508020060209tc Joker (BOI20_joker) C++14
49 / 100
 2000 ms 9772 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]))%2;
}
int fin(int x){
if(uf[x]==x){return x;}
int v=(ufv[x]+finv(uf[x]))%2;
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 1 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 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 464 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 360 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 1 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 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 464 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 360 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 18 ms 340 KB Output is correct
30 Correct 26 ms 468 KB Output is correct
31 Correct 22 ms 468 KB Output is correct
32 Correct 15 ms 468 KB Output is correct
33 Correct 15 ms 468 KB Output is correct
34 Correct 27 ms 476 KB Output is correct
35 Correct 29 ms 468 KB Output is correct
36 Correct 30 ms 468 KB Output is correct
37 Correct 54 ms 468 KB Output is correct
38 Correct 66 ms 472 KB Output is correct
39 Correct 27 ms 468 KB Output is correct
40 Correct 16 ms 468 KB Output is correct
41 Correct 16 ms 468 KB Output is correct
42 Correct 16 ms 468 KB Output is correct
43 Correct 18 ms 468 KB Output is correct
44 Correct 20 ms 468 KB Output is correct
45 Correct 22 ms 468 KB Output is correct
46 Correct 28 ms 468 KB Output is correct
47 Correct 22 ms 468 KB Output is correct
48 Correct 22 ms 352 KB Output is correct
49 Correct 29 ms 476 KB Output is correct
50 Correct 32 ms 468 KB Output is correct
51 Correct 18 ms 472 KB Output is correct
52 Correct 20 ms 468 KB Output is correct
53 Correct 22 ms 468 KB Output is correct
54 Correct 28 ms 468 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 148 ms 7548 KB Output is correct
4 Correct 149 ms 9552 KB Output is correct
5 Correct 157 ms 7880 KB Output is correct
6 Correct 149 ms 7552 KB Output is correct
7 Correct 156 ms 7688 KB Output is correct
8 Correct 131 ms 7296 KB Output is correct
9 Correct 134 ms 7676 KB Output is correct
10 Correct 138 ms 8904 KB Output is correct
11 Correct 148 ms 7628 KB Output is correct
12 Correct 153 ms 8468 KB Output is correct
13 Correct 157 ms 6604 KB Output is correct
14 Correct 150 ms 7116 KB Output is correct
15 Correct 149 ms 8124 KB Output is correct
16 Correct 163 ms 8748 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 464 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 360 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 148 ms 7548 KB Output is correct
30 Correct 149 ms 9552 KB Output is correct
31 Correct 157 ms 7880 KB Output is correct
32 Correct 149 ms 7552 KB Output is correct
33 Correct 156 ms 7688 KB Output is correct
34 Correct 131 ms 7296 KB Output is correct
35 Correct 134 ms 7676 KB Output is correct
36 Correct 138 ms 8904 KB Output is correct
37 Correct 148 ms 7628 KB Output is correct
38 Correct 153 ms 8468 KB Output is correct
39 Correct 157 ms 6604 KB Output is correct
40 Correct 150 ms 7116 KB Output is correct
41 Correct 149 ms 8124 KB Output is correct
42 Correct 163 ms 8748 KB Output is correct
43 Correct 763 ms 7672 KB Output is correct
44 Correct 1680 ms 9772 KB Output is correct
45 Correct 1529 ms 9376 KB Output is correct
46 Correct 218 ms 7428 KB Output is correct
47 Correct 244 ms 7332 KB Output is correct
48 Correct 589 ms 7556 KB Output is correct
49 Correct 987 ms 8924 KB Output is correct
50 Correct 995 ms 7176 KB Output is correct
51 Correct 935 ms 8064 KB Output is correct
52 Correct 906 ms 8780 KB Output is correct
53 Correct 550 ms 6480 KB Output is correct
54 Correct 579 ms 7188 KB Output is correct
55 Correct 815 ms 7856 KB Output is correct
56 Correct 991 ms 8844 KB Output is correct

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 464 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 360 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 18 ms 340 KB Output is correct
30 Correct 26 ms 468 KB Output is correct
31 Correct 22 ms 468 KB Output is correct
32 Correct 15 ms 468 KB Output is correct
33 Correct 15 ms 468 KB Output is correct
34 Correct 27 ms 476 KB Output is correct
35 Correct 29 ms 468 KB Output is correct
36 Correct 30 ms 468 KB Output is correct
37 Correct 54 ms 468 KB Output is correct
38 Correct 66 ms 472 KB Output is correct
39 Correct 27 ms 468 KB Output is correct
40 Correct 16 ms 468 KB Output is correct
41 Correct 16 ms 468 KB Output is correct
42 Correct 16 ms 468 KB Output is correct
43 Correct 18 ms 468 KB Output is correct
44 Correct 20 ms 468 KB Output is correct
45 Correct 22 ms 468 KB Output is correct
46 Correct 28 ms 468 KB Output is correct
47 Correct 22 ms 468 KB Output is correct
48 Correct 22 ms 352 KB Output is correct
49 Correct 29 ms 476 KB Output is correct
50 Correct 32 ms 468 KB Output is correct
51 Correct 18 ms 472 KB Output is correct
52 Correct 20 ms 468 KB Output is correct
53 Correct 22 ms 468 KB Output is correct
54 Correct 28 ms 468 KB Output is correct
55 Execution timed out 2047 ms 5780 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 464 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 360 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 18 ms 340 KB Output is correct
30 Correct 26 ms 468 KB Output is correct
31 Correct 22 ms 468 KB Output is correct
32 Correct 15 ms 468 KB Output is correct
33 Correct 15 ms 468 KB Output is correct
34 Correct 27 ms 476 KB Output is correct
35 Correct 29 ms 468 KB Output is correct
36 Correct 30 ms 468 KB Output is correct
37 Correct 54 ms 468 KB Output is correct
38 Correct 66 ms 472 KB Output is correct
39 Correct 27 ms 468 KB Output is correct
40 Correct 16 ms 468 KB Output is correct
41 Correct 16 ms 468 KB Output is correct
42 Correct 16 ms 468 KB Output is correct
43 Correct 18 ms 468 KB Output is correct
44 Correct 20 ms 468 KB Output is correct
45 Correct 22 ms 468 KB Output is correct
46 Correct 28 ms 468 KB Output is correct
47 Correct 22 ms 468 KB Output is correct
48 Correct 22 ms 352 KB Output is correct
49 Correct 29 ms 476 KB Output is correct
50 Correct 32 ms 468 KB Output is correct
51 Correct 18 ms 472 KB Output is correct
52 Correct 20 ms 468 KB Output is correct
53 Correct 22 ms 468 KB Output is correct
54 Correct 28 ms 468 KB Output is correct
55 Correct 148 ms 7548 KB Output is correct
56 Correct 149 ms 9552 KB Output is correct
57 Correct 157 ms 7880 KB Output is correct
58 Correct 149 ms 7552 KB Output is correct
59 Correct 156 ms 7688 KB Output is correct
60 Correct 131 ms 7296 KB Output is correct
61 Correct 134 ms 7676 KB Output is correct
62 Correct 138 ms 8904 KB Output is correct
63 Correct 148 ms 7628 KB Output is correct
64 Correct 153 ms 8468 KB Output is correct
65 Correct 157 ms 6604 KB Output is correct
66 Correct 150 ms 7116 KB Output is correct
67 Correct 149 ms 8124 KB Output is correct
68 Correct 163 ms 8748 KB Output is correct
69 Correct 763 ms 7672 KB Output is correct
70 Correct 1680 ms 9772 KB Output is correct
71 Correct 1529 ms 9376 KB Output is correct
72 Correct 218 ms 7428 KB Output is correct
73 Correct 244 ms 7332 KB Output is correct
74 Correct 589 ms 7556 KB Output is correct
75 Correct 987 ms 8924 KB Output is correct
76 Correct 995 ms 7176 KB Output is correct
77 Correct 935 ms 8064 KB Output is correct
78 Correct 906 ms 8780 KB Output is correct
79 Correct 550 ms 6480 KB Output is correct
80 Correct 579 ms 7188 KB Output is correct
81 Correct 815 ms 7856 KB Output is correct
82 Correct 991 ms 8844 KB Output is correct
83 Execution timed out 2047 ms 5780 KB Time limit exceeded
84 Halted 0 ms 0 KB -