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Submission #887077

# Submission time Handle Problem Language Result Execution time Memory
887077 2023-12-13T16:07:55 Z maxFedorchuk Mergers (JOI19_mergers) C++14
100 / 100
 2062 ms 217816 KB 
#include <bits/stdc++.h>
using namespace std;
 
const long long MX=5e5+10;
const long long lg=30;
 
vector < long long > mas[MX];
long long prd[lg][MX];
 
long long tin[MX],tou[MX];
long long timer=0;
 
void DFSCNT(long long zar,long long mun)
{
    timer++;
    tin[zar]=timer;
 
    prd[0][zar]=mun;
    for(long long i=1;i<lg;i++)
    {
        prd[i][zar]=prd[i-1][prd[i-1][zar]];
    }
 
    for(auto u:mas[zar])
    {
        if(u!=mun)
        {
            DFSCNT(u,zar);
        }
    }
 
    timer++;
    tou[zar]=timer;
 
    return;
}
 
long long ch_prd(long long pr,long long sn)
{
    return (tin[pr]<=tin[sn] && tou[sn]<=tou[pr]);
}
 
long long lca(long long a,long long b)
{
    if(ch_prd(a,b))
    {
        return a;
    }
 
    if(ch_prd(b,a))
    {
        return b;
    }
 
    for(long long i=lg-1;i>=0;i--)
    {
        if(!ch_prd(prd[i][a],b))
        {
            a=prd[i][a];
        }
    }
    a=prd[0][a];
 
    return a;
}
 
vector < long long > com[MX];
 
bool cmp(long long a,long long b)
{
    return (tin[a]<tin[b]);
}
 
long long prfsum[MX],ans=0;
 
long long DFS2(long long zar,long long mun)
{
    long long z=0;
 
    for(auto u:mas[zar])
    {
        if(u!=mun)
        {
            z+=DFS2(u,zar);
            prfsum[zar]+=prfsum[u];
        }
    }
 
    if(zar==1)
    {
        ans+=(z==1);
    }
    else
    {
        if(prfsum[zar]==0)
        {
            ans+=(z==0);
            z=1;
        }
    }
 
 
 
    return z;
}
 
int main()
{
    cin.tie(0);
    ios_base::sync_with_stdio(0);
 
    long long n,k;
    cin>>n>>k;
 
    long long a,b;
    for(long long i=1;i<n;i++)
    {
        cin>>a>>b;
        mas[a].push_back(b);
        mas[b].push_back(a);
    }
 
  	tin[0]=0;
    DFSCNT(1,0);
  	timer++;
  	tou[0]=timer;
 
    for(long long i=1;i<=n;i++)
    {
        cin>>a;
        com[a].push_back(i);
    }
 
    for(long long i=1;i<=k;i++)
    {
        sort(com[i].begin(),com[i].end(),cmp);
 
        long long sz=com[i].size();
        for(long long j=0;j<sz;j++)
        {
            prfsum[com[i][j]]++;
            prfsum[lca(com[i][j],com[i][(j+1)%sz])]--;
        }
    }
 
    DFS2(1,0);
 
    cout<<(ans+1)/2<<"\n";
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 91224 KB Output is correct
2 Correct 12 ms 91228 KB Output is correct
3 Correct 12 ms 91284 KB Output is correct
4 Correct 12 ms 91324 KB Output is correct
5 Correct 13 ms 91252 KB Output is correct
6 Correct 12 ms 91332 KB Output is correct
7 Correct 12 ms 91228 KB Output is correct
8 Correct 13 ms 91228 KB Output is correct
9 Correct 12 ms 91228 KB Output is correct
10 Correct 13 ms 91224 KB Output is correct
11 Correct 12 ms 91228 KB Output is correct
12 Correct 12 ms 91228 KB Output is correct
13 Correct 12 ms 91316 KB Output is correct
14 Correct 12 ms 91228 KB Output is correct
15 Correct 12 ms 91228 KB Output is correct
16 Correct 12 ms 91228 KB Output is correct
17 Correct 12 ms 91228 KB Output is correct
18 Correct 13 ms 91228 KB Output is correct
19 Correct 12 ms 91256 KB Output is correct
20 Correct 14 ms 91204 KB Output is correct
21 Correct 12 ms 91224 KB Output is correct
22 Correct 12 ms 91228 KB Output is correct
23 Correct 12 ms 91228 KB Output is correct
24 Correct 13 ms 91228 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 91224 KB Output is correct
2 Correct 12 ms 91228 KB Output is correct
3 Correct 12 ms 91284 KB Output is correct
4 Correct 12 ms 91324 KB Output is correct
5 Correct 13 ms 91252 KB Output is correct
6 Correct 12 ms 91332 KB Output is correct
7 Correct 12 ms 91228 KB Output is correct
8 Correct 13 ms 91228 KB Output is correct
9 Correct 12 ms 91228 KB Output is correct
10 Correct 13 ms 91224 KB Output is correct
11 Correct 12 ms 91228 KB Output is correct
12 Correct 12 ms 91228 KB Output is correct
13 Correct 12 ms 91316 KB Output is correct
14 Correct 12 ms 91228 KB Output is correct
15 Correct 12 ms 91228 KB Output is correct
16 Correct 12 ms 91228 KB Output is correct
17 Correct 12 ms 91228 KB Output is correct
18 Correct 13 ms 91228 KB Output is correct
19 Correct 12 ms 91256 KB Output is correct
20 Correct 14 ms 91204 KB Output is correct
21 Correct 12 ms 91224 KB Output is correct
22 Correct 12 ms 91228 KB Output is correct
23 Correct 12 ms 91228 KB Output is correct
24 Correct 13 ms 91228 KB Output is correct
25 Correct 12 ms 91228 KB Output is correct
26 Correct 14 ms 91364 KB Output is correct
27 Correct 14 ms 91484 KB Output is correct
28 Correct 14 ms 91740 KB Output is correct
29 Correct 14 ms 91484 KB Output is correct
30 Correct 14 ms 91572 KB Output is correct
31 Correct 12 ms 91228 KB Output is correct
32 Correct 14 ms 91740 KB Output is correct
33 Correct 12 ms 91292 KB Output is correct
34 Correct 14 ms 91436 KB Output is correct
35 Correct 14 ms 91484 KB Output is correct
36 Correct 14 ms 91484 KB Output is correct
37 Correct 14 ms 91512 KB Output is correct
38 Correct 12 ms 91228 KB Output is correct
39 Correct 15 ms 91456 KB Output is correct
40 Correct 14 ms 91480 KB Output is correct
41 Correct 14 ms 91484 KB Output is correct
42 Correct 14 ms 91516 KB Output is correct
43 Correct 14 ms 91740 KB Output is correct
44 Correct 13 ms 91224 KB Output is correct
45 Correct 14 ms 91480 KB Output is correct
46 Correct 15 ms 91480 KB Output is correct
47 Correct 13 ms 91244 KB Output is correct
48 Correct 14 ms 91484 KB Output is correct
49 Correct 14 ms 91544 KB Output is correct
50 Correct 14 ms 91484 KB Output is correct
51 Correct 14 ms 91736 KB Output is correct
52 Correct 14 ms 91484 KB Output is correct
53 Correct 15 ms 91480 KB Output is correct
54 Correct 17 ms 91480 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 91224 KB Output is correct
2 Correct 12 ms 91228 KB Output is correct
3 Correct 12 ms 91284 KB Output is correct
4 Correct 12 ms 91324 KB Output is correct
5 Correct 13 ms 91252 KB Output is correct
6 Correct 12 ms 91332 KB Output is correct
7 Correct 12 ms 91228 KB Output is correct
8 Correct 13 ms 91228 KB Output is correct
9 Correct 12 ms 91228 KB Output is correct
10 Correct 13 ms 91224 KB Output is correct
11 Correct 12 ms 91228 KB Output is correct
12 Correct 12 ms 91228 KB Output is correct
13 Correct 12 ms 91316 KB Output is correct
14 Correct 12 ms 91228 KB Output is correct
15 Correct 12 ms 91228 KB Output is correct
16 Correct 12 ms 91228 KB Output is correct
17 Correct 12 ms 91228 KB Output is correct
18 Correct 13 ms 91228 KB Output is correct
19 Correct 12 ms 91256 KB Output is correct
20 Correct 14 ms 91204 KB Output is correct
21 Correct 12 ms 91224 KB Output is correct
22 Correct 12 ms 91228 KB Output is correct
23 Correct 12 ms 91228 KB Output is correct
24 Correct 13 ms 91228 KB Output is correct
25 Correct 12 ms 91228 KB Output is correct
26 Correct 260 ms 124668 KB Output is correct
27 Correct 265 ms 124496 KB Output is correct
28 Correct 14 ms 91568 KB Output is correct
29 Correct 12 ms 91228 KB Output is correct
30 Correct 12 ms 91332 KB Output is correct
31 Correct 189 ms 124432 KB Output is correct
32 Correct 14 ms 91484 KB Output is correct
33 Correct 93 ms 130896 KB Output is correct
34 Correct 254 ms 124336 KB Output is correct
35 Correct 14 ms 91484 KB Output is correct
36 Correct 102 ms 124464 KB Output is correct
37 Correct 14 ms 91484 KB Output is correct
38 Correct 14 ms 91520 KB Output is correct
39 Correct 263 ms 124996 KB Output is correct
40 Correct 14 ms 91740 KB Output is correct
41 Correct 197 ms 124060 KB Output is correct
42 Correct 93 ms 126036 KB Output is correct
43 Correct 12 ms 91224 KB Output is correct
44 Correct 113 ms 131052 KB Output is correct
45 Correct 235 ms 128852 KB Output is correct
46 Correct 15 ms 91484 KB Output is correct
47 Correct 14 ms 91428 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 264 ms 124872 KB Output is correct
2 Correct 76 ms 126932 KB Output is correct
3 Correct 14 ms 91484 KB Output is correct
4 Correct 13 ms 91736 KB Output is correct
5 Correct 12 ms 91228 KB Output is correct
6 Correct 12 ms 91216 KB Output is correct
7 Correct 14 ms 91484 KB Output is correct
8 Correct 237 ms 125512 KB Output is correct
9 Correct 14 ms 91484 KB Output is correct
10 Correct 180 ms 124612 KB Output is correct
11 Correct 12 ms 91228 KB Output is correct
12 Correct 92 ms 124076 KB Output is correct
13 Correct 192 ms 125396 KB Output is correct
14 Correct 91 ms 126800 KB Output is correct
15 Correct 263 ms 124580 KB Output is correct
16 Correct 14 ms 91480 KB Output is correct
17 Correct 12 ms 91228 KB Output is correct
18 Correct 128 ms 126472 KB Output is correct
19 Correct 99 ms 130212 KB Output is correct
20 Correct 14 ms 91484 KB Output is correct
21 Correct 12 ms 91228 KB Output is correct
22 Correct 232 ms 125376 KB Output is correct
23 Correct 14 ms 91480 KB Output is correct
24 Correct 112 ms 124832 KB Output is correct
25 Correct 110 ms 129876 KB Output is correct
26 Correct 14 ms 91484 KB Output is correct
27 Correct 14 ms 91484 KB Output is correct
28 Correct 14 ms 91444 KB Output is correct
29 Correct 14 ms 91484 KB Output is correct
30 Correct 15 ms 91484 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 91224 KB Output is correct
2 Correct 12 ms 91228 KB Output is correct
3 Correct 12 ms 91284 KB Output is correct
4 Correct 12 ms 91324 KB Output is correct
5 Correct 13 ms 91252 KB Output is correct
6 Correct 12 ms 91332 KB Output is correct
7 Correct 12 ms 91228 KB Output is correct
8 Correct 13 ms 91228 KB Output is correct
9 Correct 12 ms 91228 KB Output is correct
10 Correct 13 ms 91224 KB Output is correct
11 Correct 12 ms 91228 KB Output is correct
12 Correct 12 ms 91228 KB Output is correct
13 Correct 12 ms 91316 KB Output is correct
14 Correct 12 ms 91228 KB Output is correct
15 Correct 12 ms 91228 KB Output is correct
16 Correct 12 ms 91228 KB Output is correct
17 Correct 12 ms 91228 KB Output is correct
18 Correct 13 ms 91228 KB Output is correct
19 Correct 12 ms 91256 KB Output is correct
20 Correct 14 ms 91204 KB Output is correct
21 Correct 12 ms 91224 KB Output is correct
22 Correct 12 ms 91228 KB Output is correct
23 Correct 12 ms 91228 KB Output is correct
24 Correct 13 ms 91228 KB Output is correct
25 Correct 12 ms 91228 KB Output is correct
26 Correct 14 ms 91364 KB Output is correct
27 Correct 14 ms 91484 KB Output is correct
28 Correct 14 ms 91740 KB Output is correct
29 Correct 14 ms 91484 KB Output is correct
30 Correct 14 ms 91572 KB Output is correct
31 Correct 12 ms 91228 KB Output is correct
32 Correct 14 ms 91740 KB Output is correct
33 Correct 12 ms 91292 KB Output is correct
34 Correct 14 ms 91436 KB Output is correct
35 Correct 14 ms 91484 KB Output is correct
36 Correct 14 ms 91484 KB Output is correct
37 Correct 14 ms 91512 KB Output is correct
38 Correct 12 ms 91228 KB Output is correct
39 Correct 15 ms 91456 KB Output is correct
40 Correct 14 ms 91480 KB Output is correct
41 Correct 14 ms 91484 KB Output is correct
42 Correct 14 ms 91516 KB Output is correct
43 Correct 14 ms 91740 KB Output is correct
44 Correct 13 ms 91224 KB Output is correct
45 Correct 14 ms 91480 KB Output is correct
46 Correct 15 ms 91480 KB Output is correct
47 Correct 13 ms 91244 KB Output is correct
48 Correct 14 ms 91484 KB Output is correct
49 Correct 14 ms 91544 KB Output is correct
50 Correct 14 ms 91484 KB Output is correct
51 Correct 14 ms 91736 KB Output is correct
52 Correct 14 ms 91484 KB Output is correct
53 Correct 15 ms 91480 KB Output is correct
54 Correct 17 ms 91480 KB Output is correct
55 Correct 12 ms 91228 KB Output is correct
56 Correct 260 ms 124668 KB Output is correct
57 Correct 265 ms 124496 KB Output is correct
58 Correct 14 ms 91568 KB Output is correct
59 Correct 12 ms 91228 KB Output is correct
60 Correct 12 ms 91332 KB Output is correct
61 Correct 189 ms 124432 KB Output is correct
62 Correct 14 ms 91484 KB Output is correct
63 Correct 93 ms 130896 KB Output is correct
64 Correct 254 ms 124336 KB Output is correct
65 Correct 14 ms 91484 KB Output is correct
66 Correct 102 ms 124464 KB Output is correct
67 Correct 14 ms 91484 KB Output is correct
68 Correct 14 ms 91520 KB Output is correct
69 Correct 263 ms 124996 KB Output is correct
70 Correct 14 ms 91740 KB Output is correct
71 Correct 197 ms 124060 KB Output is correct
72 Correct 93 ms 126036 KB Output is correct
73 Correct 12 ms 91224 KB Output is correct
74 Correct 113 ms 131052 KB Output is correct
75 Correct 235 ms 128852 KB Output is correct
76 Correct 15 ms 91484 KB Output is correct
77 Correct 14 ms 91428 KB Output is correct
78 Correct 264 ms 124872 KB Output is correct
79 Correct 76 ms 126932 KB Output is correct
80 Correct 14 ms 91484 KB Output is correct
81 Correct 13 ms 91736 KB Output is correct
82 Correct 12 ms 91228 KB Output is correct
83 Correct 12 ms 91216 KB Output is correct
84 Correct 14 ms 91484 KB Output is correct
85 Correct 237 ms 125512 KB Output is correct
86 Correct 14 ms 91484 KB Output is correct
87 Correct 180 ms 124612 KB Output is correct
88 Correct 12 ms 91228 KB Output is correct
89 Correct 92 ms 124076 KB Output is correct
90 Correct 192 ms 125396 KB Output is correct
91 Correct 91 ms 126800 KB Output is correct
92 Correct 263 ms 124580 KB Output is correct
93 Correct 14 ms 91480 KB Output is correct
94 Correct 12 ms 91228 KB Output is correct
95 Correct 128 ms 126472 KB Output is correct
96 Correct 99 ms 130212 KB Output is correct
97 Correct 14 ms 91484 KB Output is correct
98 Correct 12 ms 91228 KB Output is correct
99 Correct 232 ms 125376 KB Output is correct
100 Correct 14 ms 91480 KB Output is correct
101 Correct 112 ms 124832 KB Output is correct
102 Correct 110 ms 129876 KB Output is correct
103 Correct 14 ms 91484 KB Output is correct
104 Correct 14 ms 91484 KB Output is correct
105 Correct 14 ms 91444 KB Output is correct
106 Correct 14 ms 91484 KB Output is correct
107 Correct 15 ms 91484 KB Output is correct
108 Correct 1780 ms 190952 KB Output is correct
109 Correct 796 ms 198868 KB Output is correct
110 Correct 793 ms 210140 KB Output is correct
111 Correct 904 ms 217816 KB Output is correct
112 Correct 897 ms 212068 KB Output is correct
113 Correct 778 ms 196624 KB Output is correct
114 Correct 1342 ms 183600 KB Output is correct
115 Correct 1332 ms 183224 KB Output is correct
116 Correct 2062 ms 188592 KB Output is correct
117 Correct 610 ms 197132 KB Output is correct
118 Correct 1313 ms 186072 KB Output is correct
119 Correct 613 ms 197128 KB Output is correct
120 Correct 892 ms 212816 KB Output is correct
121 Correct 594 ms 197200 KB Output is correct
122 Correct 1602 ms 192020 KB Output is correct
123 Correct 438 ms 198248 KB Output is correct
124 Correct 644 ms 193868 KB Output is correct