oj.uz

답안 #643371

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
643371 2022-09-21T22:32:09 Z Pajaraja Jail (JOI22_jail) C++17
49 / 100
 662 ms 580332 KB 
#include <bits/stdc++.h>
#define MAXN 120007
#define MAXL 19
using namespace std;
vector<int> g[MAXN],v[2*MAXL*MAXN];
int p[MAXL][MAXN],ind[2][MAXL][MAXN],in[MAXN],out[MAXN],t,deg[MAXN];
void dfs(int s,int f)
{
    p[0][s]=f;
    in[s]=++t;
    for(int i=0;i<g[s].size();i++) if(g[s][i]!=f) dfs(g[s][i],s);
    out[s]=t;
}
bool insub(int uu,int vv) {return in[uu]<=in[vv] && out[uu]>=out[vv];} //Jel v insub u
int oneunder(int uu,int vv)
{
    for(int i=MAXL-1;i>=0;i--) if(!insub(p[i][uu],vv)) uu=p[i][uu];
    return uu;
}
int lca(int uu,int vv)
{
    if(insub(uu,vv)) return uu;
    if(insub(vv,uu)) return vv;
    return p[0][oneunder(uu,vv)];
}
void dostuff(int uu,int vv,int type,int br)
{
    for(int i=MAXL-1;i>=0;i--) if(!insub(p[i][uu],vv))
    {
        if(type==0) v[br].push_back(ind[0][i][uu]);
        else v[ind[1][i][uu]].push_back(br);
        uu=p[i][uu];
    }
    if(type==0) v[br].push_back(ind[0][0][uu]);
    else v[ind[1][0][uu]].push_back(br);
    if(type==0) v[br].push_back(ind[0][0][vv]);
    else v[ind[1][0][vv]].push_back(br);
}
int main()
{
    int q;
    scanf("%d",&q);
    while(q--)
    {
        int n,m;
        scanf("%d",&n);
        for(int i=1;i<n;i++)
        {
            int t1,t2;
            scanf("%d %d",&t1,&t2);
            g[t1].push_back(t2);
            g[t2].push_back(t1);
        }
        dfs(1,1); t=0;
        int c=2*n,br=0;
        for(int i=1;i<=n;i++) ind[0][0][i]=i;
        for(int i=1;i<=n;i++) ind[1][0][i]=n+i;
        for(int j=1;j<MAXL;j++) for(int i=1;i<=n;i++)
        {
            p[j][i]=p[j-1][p[j-1][i]];
            c++;
            ind[0][j][i]=c;
            v[c].push_back(ind[0][j-1][i]);
            v[c].push_back(ind[0][j-1][p[j-1][i]]);
            c++;
            ind[1][j][i]=c;
            v[ind[1][j-1][i]].push_back(c);
            v[ind[1][j-1][p[j-1][i]]].push_back(c);
        }
        scanf("%d",&m);
        for(int i=1;i<=m;i++)
        {
            c++;
            int s,e;
            scanf("%d%d",&s,&e);
            v[s].push_back(c);
            v[c].push_back(n+e);
            int lc=lca(s,e);
            if(lc!=s && lc!=e)
            {
                dostuff(p[0][s],lc,0,c);
                dostuff(e,oneunder(e,lc),0,c);
                dostuff(p[0][e],lc,1,c);
                dostuff(s,oneunder(s,lc),1,c);
            }
            if(lc==s)
            {
                dostuff(e,oneunder(e,s),0,c);
                dostuff(p[0][e],s,1,c);
            }
            if(lc==e)
            {
                dostuff(s,oneunder(s,e),1,c);
                dostuff(p[0][s],e,0,c);
            }
        }
        queue<int> q;
        for(int i=1;i<=c;i++) deg[i]=0;
        for(int i=1;i<=c;i++) for(int j=0;j<v[i].size();j++) deg[v[i][j]]++;
        for(int i=1;i<=c;i++) if(deg[i]==0) q.push(i);
        //for(int i=1;i<=c;i++) for(int j=0;j<v[i].size();j++) printf("%d %d\n",i,v[i][j]);
        while(!q.empty())
        {
            br++;
            int s=q.front(); q.pop();
            for(int i=0;i<v[s].size();i++) {deg[v[s][i]]--; if(deg[v[s][i]]==0) q.push(v[s][i]);}
        }
        //printf("%d %d\n",c,br);
        if(br==c) printf("Yes\n");
        else printf("No\n");
        for(int i=1;i<=c;i++) v[i].clear();
        for(int i=1;i<=n;i++) g[i].clear();
    }
}

Compilation message

jail.cpp: In function 'void dfs(int, int)':
jail.cpp:11:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int i=0;i<g[s].size();i++) if(g[s][i]!=f) dfs(g[s][i],s);
      |                 ~^~~~~~~~~~~~
jail.cpp: In function 'int main()':
jail.cpp:99:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |         for(int i=1;i<=c;i++) for(int j=0;j<v[i].size();j++) deg[v[i][j]]++;
      |                                           ~^~~~~~~~~~~~
jail.cpp:106:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |             for(int i=0;i<v[s].size();i++) {deg[v[s][i]]--; if(deg[v[s][i]]==0) q.push(v[s][i]);}
      |                         ~^~~~~~~~~~~~
jail.cpp:42:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
jail.cpp:46:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         scanf("%d",&n);
      |         ~~~~~^~~~~~~~~
jail.cpp:50:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |             scanf("%d %d",&t1,&t2);
      |             ~~~~~^~~~~~~~~~~~~~~~~
jail.cpp:70:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |         scanf("%d",&m);
      |         ~~~~~^~~~~~~~~
jail.cpp:75:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |             scanf("%d%d",&s,&e);
      |             ~~~~~^~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 110484 KB Output is correct
2 Correct 50 ms 110476 KB Output is correct
3 Correct 49 ms 110392 KB Output is correct
4 Correct 127 ms 111060 KB Output is correct
5 Correct 222 ms 111436 KB Output is correct
6 Correct 57 ms 110924 KB Output is correct
7 Correct 65 ms 110848 KB Output is correct
8 Correct 60 ms 110900 KB Output is correct
9 Correct 351 ms 121896 KB Output is correct
10 Runtime error 662 ms 557796 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 55 ms 110412 KB Output is correct
2 Correct 56 ms 110488 KB Output is correct
3 Correct 63 ms 110852 KB Output is correct
4 Correct 65 ms 110872 KB Output is correct
5 Correct 65 ms 110944 KB Output is correct
6 Correct 65 ms 110832 KB Output is correct
7 Correct 64 ms 110924 KB Output is correct
8 Correct 65 ms 110916 KB Output is correct
9 Correct 63 ms 110884 KB Output is correct
10 Correct 64 ms 110936 KB Output is correct
11 Correct 65 ms 110916 KB Output is correct
12 Correct 59 ms 110848 KB Output is correct
13 Correct 60 ms 110884 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 55 ms 110412 KB Output is correct
2 Correct 56 ms 110488 KB Output is correct
3 Correct 63 ms 110852 KB Output is correct
4 Correct 65 ms 110872 KB Output is correct
5 Correct 65 ms 110944 KB Output is correct
6 Correct 65 ms 110832 KB Output is correct
7 Correct 64 ms 110924 KB Output is correct
8 Correct 65 ms 110916 KB Output is correct
9 Correct 63 ms 110884 KB Output is correct
10 Correct 64 ms 110936 KB Output is correct
11 Correct 65 ms 110916 KB Output is correct
12 Correct 59 ms 110848 KB Output is correct
13 Correct 60 ms 110884 KB Output is correct
14 Correct 54 ms 110448 KB Output is correct
15 Correct 52 ms 110492 KB Output is correct
16 Correct 61 ms 110924 KB Output is correct
17 Correct 62 ms 110924 KB Output is correct
18 Correct 64 ms 111016 KB Output is correct
19 Correct 54 ms 110396 KB Output is correct
20 Correct 64 ms 110960 KB Output is correct
21 Correct 64 ms 110916 KB Output is correct
22 Correct 63 ms 110904 KB Output is correct
23 Correct 56 ms 110436 KB Output is correct
24 Correct 57 ms 110704 KB Output is correct
25 Correct 66 ms 110956 KB Output is correct
26 Correct 58 ms 110840 KB Output is correct
27 Correct 76 ms 110812 KB Output is correct
28 Correct 59 ms 110532 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 55 ms 110412 KB Output is correct
2 Correct 56 ms 110488 KB Output is correct
3 Correct 63 ms 110852 KB Output is correct
4 Correct 65 ms 110872 KB Output is correct
5 Correct 65 ms 110944 KB Output is correct
6 Correct 65 ms 110832 KB Output is correct
7 Correct 64 ms 110924 KB Output is correct
8 Correct 65 ms 110916 KB Output is correct
9 Correct 63 ms 110884 KB Output is correct
10 Correct 64 ms 110936 KB Output is correct
11 Correct 65 ms 110916 KB Output is correct
12 Correct 59 ms 110848 KB Output is correct
13 Correct 60 ms 110884 KB Output is correct
14 Correct 54 ms 110448 KB Output is correct
15 Correct 52 ms 110492 KB Output is correct
16 Correct 61 ms 110924 KB Output is correct
17 Correct 62 ms 110924 KB Output is correct
18 Correct 64 ms 111016 KB Output is correct
19 Correct 54 ms 110396 KB Output is correct
20 Correct 64 ms 110960 KB Output is correct
21 Correct 64 ms 110916 KB Output is correct
22 Correct 63 ms 110904 KB Output is correct
23 Correct 56 ms 110436 KB Output is correct
24 Correct 57 ms 110704 KB Output is correct
25 Correct 66 ms 110956 KB Output is correct
26 Correct 58 ms 110840 KB Output is correct
27 Correct 76 ms 110812 KB Output is correct
28 Correct 59 ms 110532 KB Output is correct
29 Correct 66 ms 110956 KB Output is correct
30 Correct 68 ms 111172 KB Output is correct
31 Correct 65 ms 110864 KB Output is correct
32 Correct 67 ms 110972 KB Output is correct
33 Correct 65 ms 110956 KB Output is correct
34 Correct 64 ms 110796 KB Output is correct
35 Correct 64 ms 110884 KB Output is correct
36 Correct 68 ms 110956 KB Output is correct
37 Correct 61 ms 110856 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 55 ms 110412 KB Output is correct
2 Correct 56 ms 110488 KB Output is correct
3 Correct 63 ms 110852 KB Output is correct
4 Correct 65 ms 110872 KB Output is correct
5 Correct 65 ms 110944 KB Output is correct
6 Correct 65 ms 110832 KB Output is correct
7 Correct 64 ms 110924 KB Output is correct
8 Correct 65 ms 110916 KB Output is correct
9 Correct 63 ms 110884 KB Output is correct
10 Correct 64 ms 110936 KB Output is correct
11 Correct 65 ms 110916 KB Output is correct
12 Correct 59 ms 110848 KB Output is correct
13 Correct 60 ms 110884 KB Output is correct
14 Correct 54 ms 110448 KB Output is correct
15 Correct 52 ms 110492 KB Output is correct
16 Correct 61 ms 110924 KB Output is correct
17 Correct 62 ms 110924 KB Output is correct
18 Correct 64 ms 111016 KB Output is correct
19 Correct 54 ms 110396 KB Output is correct
20 Correct 64 ms 110960 KB Output is correct
21 Correct 64 ms 110916 KB Output is correct
22 Correct 63 ms 110904 KB Output is correct
23 Correct 56 ms 110436 KB Output is correct
24 Correct 57 ms 110704 KB Output is correct
25 Correct 66 ms 110956 KB Output is correct
26 Correct 58 ms 110840 KB Output is correct
27 Correct 76 ms 110812 KB Output is correct
28 Correct 59 ms 110532 KB Output is correct
29 Correct 66 ms 110956 KB Output is correct
30 Correct 68 ms 111172 KB Output is correct
31 Correct 65 ms 110864 KB Output is correct
32 Correct 67 ms 110972 KB Output is correct
33 Correct 65 ms 110956 KB Output is correct
34 Correct 64 ms 110796 KB Output is correct
35 Correct 64 ms 110884 KB Output is correct
36 Correct 68 ms 110956 KB Output is correct
37 Correct 61 ms 110856 KB Output is correct
38 Correct 398 ms 121684 KB Output is correct
39 Runtime error 622 ms 579928 KB Execution killed with signal 11
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 60 ms 110540 KB Output is correct
2 Correct 65 ms 110504 KB Output is correct
3 Correct 56 ms 110508 KB Output is correct
4 Correct 57 ms 110452 KB Output is correct
5 Correct 96 ms 110568 KB Output is correct
6 Correct 66 ms 110844 KB Output is correct
7 Correct 76 ms 110924 KB Output is correct
8 Correct 57 ms 110412 KB Output is correct
9 Correct 58 ms 110488 KB Output is correct
10 Correct 57 ms 110696 KB Output is correct
11 Correct 57 ms 110476 KB Output is correct
12 Correct 64 ms 110912 KB Output is correct
13 Correct 169 ms 111240 KB Output is correct
14 Correct 290 ms 111452 KB Output is correct
15 Correct 229 ms 111312 KB Output is correct
16 Runtime error 615 ms 580332 KB Execution killed with signal 11
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 110484 KB Output is correct
2 Correct 50 ms 110476 KB Output is correct
3 Correct 49 ms 110392 KB Output is correct
4 Correct 127 ms 111060 KB Output is correct
5 Correct 222 ms 111436 KB Output is correct
6 Correct 57 ms 110924 KB Output is correct
7 Correct 65 ms 110848 KB Output is correct
8 Correct 60 ms 110900 KB Output is correct
9 Correct 351 ms 121896 KB Output is correct
10 Runtime error 662 ms 557796 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -