oj.uz

Submission #288483

# Submission time Handle Problem Language Result Execution time Memory
288483 2020-09-01T14:19:11 Z davi_bart Simurgh (IOI17_simurgh) C++14
30 / 100
 1000 ms 10488 KB 
#include "simurgh.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
#define ld long double
/*
4 6
0 1
0 2
0 3
1 2
1 3
2 3
0 1 5
*/
int count_common_roads(const vector<int>& r);
int ask(set<int> o){
  vector<int> x;
  for(int y:o)x.push_back(y);
  return count_common_roads(x);
}
int N;
set<pair<int,int> > p[600];
vector<int> grafo(int pos){
  vector<int> group(N+2,-1);
  set<int> v;
  vector<bool> vis(N+2,0);

  queue<pair<int,int> >q;

  for(int i=0;i<N;i++){
    if(vis[i] || i==pos)continue;
    q.push({i,-1});
    while(!q.empty()){
      auto &[pp,idx]=q.front();
      q.pop();
      if(vis[pp])continue;
      vis[pp]=1;
      group[pp]=i;
      if(idx!=-1)v.insert(idx);
      for(auto x:p[pp]){
        if(x.first!=pos)q.push({x.first,x.second});
      }
    }
  }

  vector<int> arc[N+2];
  for(auto &[a,b]:p[pos]){
    arc[group[a]].push_back(b);
  }

  vector<int> prendere;

  for(int i=0;i<N;i++){
    if(arc[i].size()==0)continue;
    v.insert(arc[i][0]);
  }
  for(int i=0;i<N;i++){
    if(arc[i].size()==0)continue;
    int ma=ask(v);
    vector<int> qq={ma};
    for(int j=1;j<arc[i].size();j++){
      v.erase(arc[i][j-1]);
      v.insert(arc[i][j]);
      qq.push_back(ask(v));
      ma=max(ma,qq.back());
    }
    for(int j=0;j<arc[i].size();j++){
      if(qq[j]==ma){
        prendere.push_back(arc[i][j]);
      }
    }
  }
  return prendere;
}

std::vector<int> find_roads(int n, std::vector<int> u, std::vector<int> v){
  N=n;
  for(int i=0;i<u.size();i++){
    p[u[i]].insert({v[i],i});
    p[v[i]].insert({u[i],i});
  }
  vector<int> ans;
	for(int i=0;i<N;i++){
    auto x=grafo(i);
    for(int j:x)ans.push_back(j);
	}
	sort(ans.begin(),ans.end());
	ans.resize(unique(ans.begin(),ans.end())-ans.begin());
	return ans;
}

Compilation message

simurgh.cpp: In function 'std::vector<int> grafo(int)':
simurgh.cpp:37:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   37 |       auto &[pp,idx]=q.front();
      |             ^
simurgh.cpp:50:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   50 |   for(auto &[a,b]:p[pos]){
      |             ^
simurgh.cpp:64:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |     for(int j=1;j<arc[i].size();j++){
      |                 ~^~~~~~~~~~~~~~
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 j=0;j<arc[i].size();j++){
      |                 ~^~~~~~~~~~~~~~
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:81:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |   for(int i=0;i<u.size();i++){
      |               ~^~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 1 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 1 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 1 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 1 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 14 ms 512 KB correct
15 Correct 14 ms 512 KB correct
16 Correct 14 ms 512 KB correct
17 Correct 12 ms 512 KB correct
18 Correct 5 ms 384 KB correct
19 Correct 12 ms 512 KB correct
20 Correct 12 ms 512 KB correct
21 Correct 11 ms 512 KB correct
22 Correct 9 ms 384 KB correct
23 Correct 8 ms 384 KB correct
24 Correct 8 ms 384 KB correct
25 Correct 2 ms 384 KB correct
26 Correct 9 ms 384 KB correct
27 Correct 9 ms 384 KB correct
28 Correct 4 ms 384 KB correct
29 Correct 2 ms 384 KB correct
30 Correct 8 ms 384 KB correct
31 Correct 8 ms 384 KB correct
32 Correct 8 ms 384 KB correct
33 Correct 8 ms 384 KB correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 1 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 1 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 14 ms 512 KB correct
15 Correct 14 ms 512 KB correct
16 Correct 14 ms 512 KB correct
17 Correct 12 ms 512 KB correct
18 Correct 5 ms 384 KB correct
19 Correct 12 ms 512 KB correct
20 Correct 12 ms 512 KB correct
21 Correct 11 ms 512 KB correct
22 Correct 9 ms 384 KB correct
23 Correct 8 ms 384 KB correct
24 Correct 8 ms 384 KB correct
25 Correct 2 ms 384 KB correct
26 Correct 9 ms 384 KB correct
27 Correct 9 ms 384 KB correct
28 Correct 4 ms 384 KB correct
29 Correct 2 ms 384 KB correct
30 Correct 8 ms 384 KB correct
31 Correct 8 ms 384 KB correct
32 Correct 8 ms 384 KB correct
33 Correct 8 ms 384 KB correct
34 Incorrect 951 ms 4264 KB WA in grader: NO
35 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 1 ms 384 KB correct
3 Incorrect 1000 ms 10488 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB correct
2 Correct 1 ms 384 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 1 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 1 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 0 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 1 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 14 ms 512 KB correct
15 Correct 14 ms 512 KB correct
16 Correct 14 ms 512 KB correct
17 Correct 12 ms 512 KB correct
18 Correct 5 ms 384 KB correct
19 Correct 12 ms 512 KB correct
20 Correct 12 ms 512 KB correct
21 Correct 11 ms 512 KB correct
22 Correct 9 ms 384 KB correct
23 Correct 8 ms 384 KB correct
24 Correct 8 ms 384 KB correct
25 Correct 2 ms 384 KB correct
26 Correct 9 ms 384 KB correct
27 Correct 9 ms 384 KB correct
28 Correct 4 ms 384 KB correct
29 Correct 2 ms 384 KB correct
30 Correct 8 ms 384 KB correct
31 Correct 8 ms 384 KB correct
32 Correct 8 ms 384 KB correct
33 Correct 8 ms 384 KB correct
34 Incorrect 951 ms 4264 KB WA in grader: NO
35 Halted 0 ms 0 KB -