oj.uz

Submission #1075884

# Submission time Handle Problem Language Result Execution time Memory
1075884 2024-08-26T09:37:22 Z edogawa_something Simurgh (IOI17_simurgh) C++17
30 / 100
 82 ms 22620 KB 
#include "simurgh.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vii;
typedef pair<ll,ll> pii;
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define pb push_back
const ll M=250000;
vector<pii> adj[M];
bool vis[M];
vii sp;
void dfs(ll x) {
  vis[x]=1;
  for(auto it:adj[x]) {
    if(vis[it.F])
      continue;
    else {
      sp.pb(it.S);
      dfs(it.F);
    }
  }
}
struct dsu {
  ll sz[250],pa[250];
  void init(ll x) {
    for(int i=0;i<x;i++)
      sz[i]=1,pa[i]=i;
  }
  ll get(ll x) {
    if(x==pa[x])
      return x;
    return pa[x]=get(pa[x]);
  }
  void unite(ll x,ll y) {
    x=get(x),y=get(y);
    if(x==y)
      return;
    if(sz[x]>sz[y])
      swap(x,y);
    pa[x]=y;
    sz[y]+=sz[x];
  }
  bool same(ll x,ll y) {
    return get(x)==get(y);
  }
}d;
ll cnt[M],cc[M];
bool a[M];
set<ll>s;
vector<int> find_roads(int n, std::vector<int> u, std::vector<int> vv) {
  for(int i=0;i<u.size();i++)
    adj[u[i]].pb({vv[i],i}),adj[vv[i]].pb({u[i],i});
  dfs(0);
  vector<int>ans,res;
  for(int i=0;i<u.size();i++)
    vis[i]=0;
  ll cntq=0;
  for(auto it:sp) {
    s.clear();
    ans.clear();
    d.init(n);
    vii v;
    for(auto itt:sp) {
      if(itt!=it)
        ans.pb(itt),d.unite(u[itt],vv[itt]);
    }
    for(int i=0;i<u.size();i++)
      cnt[i]=0;
    for(int i=0;i<u.size();i++) {
      if(!d.same(u[i],vv[i])) {
        ans.pb(i);
        ll x=count_common_roads(ans);
        cntq++;
        cnt[ans.back()]=x;
        s.insert(x);
        v.pb(i);
        ans.pop_back();
      }
    }
    if(s.size()==1) {
      bool cc[2];
      cc[0]=cc[1]=0;
      for(int i=0;i<u.size();i++) {
        if(!d.same(u[i],vv[i])&&vis[i]&&!cc[a[i]]) {
          cc[a[i]]=1;
          ans.pb(i);
          s.insert(count_common_roads(ans));
          cntq++;
          ans.pop_back();
        }
      }
    }
    for(auto it:v) {
      vis[it]=1;
      if(cnt[it]==*s.rbegin()) {
        a[it]=1;
      }
    }
  }
  for(int i=0;i<u.size();i++)
    if(a[i])res.pb(i);
  assert(res.size()==n-1);
  assert(cntq<=30000);
  return res;
}
/*
5 10
0 1
0 2
0 3
0 4
1 2
1 3
1 4
2 3
2 4
3 4
3 6 8 9

*/

Compilation message

simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:54:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |   for(int i=0;i<u.size();i++)
      |               ~^~~~~~~~~
simurgh.cpp:58:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |   for(int i=0;i<u.size();i++)
      |               ~^~~~~~~~~
simurgh.cpp:70:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |     for(int i=0;i<u.size();i++)
      |                 ~^~~~~~~~~
simurgh.cpp:72:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |     for(int i=0;i<u.size();i++) {
      |                 ~^~~~~~~~~
simurgh.cpp:86:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |       for(int i=0;i<u.size();i++) {
      |                   ~^~~~~~~~~
simurgh.cpp:103:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |   for(int i=0;i<u.size();i++)
      |               ~^~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from simurgh.cpp:2:
simurgh.cpp:105:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  105 |   assert(res.size()==n-1);
      |          ~~~~~~~~~~^~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10332 KB correct
2 Correct 4 ms 10332 KB correct
3 Correct 3 ms 10332 KB correct
4 Correct 3 ms 10332 KB correct
5 Correct 2 ms 10332 KB correct
6 Correct 3 ms 10332 KB correct
7 Correct 3 ms 10332 KB correct
8 Correct 2 ms 10332 KB correct
9 Correct 2 ms 10332 KB correct
10 Correct 2 ms 10332 KB correct
11 Correct 3 ms 10332 KB correct
12 Correct 3 ms 6248 KB correct
13 Correct 3 ms 6232 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10332 KB correct
2 Correct 4 ms 10332 KB correct
3 Correct 3 ms 10332 KB correct
4 Correct 3 ms 10332 KB correct
5 Correct 2 ms 10332 KB correct
6 Correct 3 ms 10332 KB correct
7 Correct 3 ms 10332 KB correct
8 Correct 2 ms 10332 KB correct
9 Correct 2 ms 10332 KB correct
10 Correct 2 ms 10332 KB correct
11 Correct 3 ms 10332 KB correct
12 Correct 3 ms 6248 KB correct
13 Correct 3 ms 6232 KB correct
14 Correct 17 ms 6452 KB correct
15 Correct 17 ms 6236 KB correct
16 Correct 15 ms 6232 KB correct
17 Correct 14 ms 10588 KB correct
18 Correct 7 ms 10332 KB correct
19 Correct 13 ms 6448 KB correct
20 Correct 12 ms 6236 KB correct
21 Correct 12 ms 6236 KB correct
22 Correct 7 ms 6236 KB correct
23 Correct 9 ms 6236 KB correct
24 Correct 6 ms 6224 KB correct
25 Correct 3 ms 10332 KB correct
26 Correct 5 ms 10588 KB correct
27 Correct 6 ms 10588 KB correct
28 Correct 4 ms 10332 KB correct
29 Correct 3 ms 6236 KB correct
30 Correct 9 ms 6392 KB correct
31 Correct 9 ms 6232 KB correct
32 Correct 11 ms 6236 KB correct
33 Correct 11 ms 6236 KB correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10332 KB correct
2 Correct 4 ms 10332 KB correct
3 Correct 3 ms 10332 KB correct
4 Correct 3 ms 10332 KB correct
5 Correct 2 ms 10332 KB correct
6 Correct 3 ms 10332 KB correct
7 Correct 3 ms 10332 KB correct
8 Correct 2 ms 10332 KB correct
9 Correct 2 ms 10332 KB correct
10 Correct 2 ms 10332 KB correct
11 Correct 3 ms 10332 KB correct
12 Correct 3 ms 6248 KB correct
13 Correct 3 ms 6232 KB correct
14 Correct 17 ms 6452 KB correct
15 Correct 17 ms 6236 KB correct
16 Correct 15 ms 6232 KB correct
17 Correct 14 ms 10588 KB correct
18 Correct 7 ms 10332 KB correct
19 Correct 13 ms 6448 KB correct
20 Correct 12 ms 6236 KB correct
21 Correct 12 ms 6236 KB correct
22 Correct 7 ms 6236 KB correct
23 Correct 9 ms 6236 KB correct
24 Correct 6 ms 6224 KB correct
25 Correct 3 ms 10332 KB correct
26 Correct 5 ms 10588 KB correct
27 Correct 6 ms 10588 KB correct
28 Correct 4 ms 10332 KB correct
29 Correct 3 ms 6236 KB correct
30 Correct 9 ms 6392 KB correct
31 Correct 9 ms 6232 KB correct
32 Correct 11 ms 6236 KB correct
33 Correct 11 ms 6236 KB correct
34 Incorrect 82 ms 12120 KB WA in grader: NO
35 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6236 KB correct
2 Correct 4 ms 6236 KB correct
3 Runtime error 23 ms 22620 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10332 KB correct
2 Correct 4 ms 10332 KB correct
3 Correct 3 ms 10332 KB correct
4 Correct 3 ms 10332 KB correct
5 Correct 2 ms 10332 KB correct
6 Correct 3 ms 10332 KB correct
7 Correct 3 ms 10332 KB correct
8 Correct 2 ms 10332 KB correct
9 Correct 2 ms 10332 KB correct
10 Correct 2 ms 10332 KB correct
11 Correct 3 ms 10332 KB correct
12 Correct 3 ms 6248 KB correct
13 Correct 3 ms 6232 KB correct
14 Correct 17 ms 6452 KB correct
15 Correct 17 ms 6236 KB correct
16 Correct 15 ms 6232 KB correct
17 Correct 14 ms 10588 KB correct
18 Correct 7 ms 10332 KB correct
19 Correct 13 ms 6448 KB correct
20 Correct 12 ms 6236 KB correct
21 Correct 12 ms 6236 KB correct
22 Correct 7 ms 6236 KB correct
23 Correct 9 ms 6236 KB correct
24 Correct 6 ms 6224 KB correct
25 Correct 3 ms 10332 KB correct
26 Correct 5 ms 10588 KB correct
27 Correct 6 ms 10588 KB correct
28 Correct 4 ms 10332 KB correct
29 Correct 3 ms 6236 KB correct
30 Correct 9 ms 6392 KB correct
31 Correct 9 ms 6232 KB correct
32 Correct 11 ms 6236 KB correct
33 Correct 11 ms 6236 KB correct
34 Incorrect 82 ms 12120 KB WA in grader: NO
35 Halted 0 ms 0 KB -