oj.uz

Submission #423293

# Submission time Handle Problem Language Result Execution time Memory
423293 2021-06-10T22:50:07 Z DanerZein Power Plant (JOI20_power) C++14
6 / 100
 1500 ms 332 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
vector<vi> G;
string x;
set<int> br;
bool dfs(int u,int p,int b){
  for(auto &v:G[u]){
    if(v==b) return 1;
    if(v!=p){
      if(dfs(v,u,b)){
	if(x[v]=='1') br.insert(v);
	return 1;
      }
    }
  }
  return 0;
}
int main(){
  int n;
  cin>>n;
  G.resize(n+1);
  for(int i=0;i<n-1;i++){
    int a,b; cin>>a>>b;
    a--; b--;
    G[a].push_back(b);
    G[b].push_back(a);
  }
  cin>>x;
  int rp=-1;
  for(int i=0;i<(1<<n);i++){
    //cout<<i<<endl;
    vector<int> po;
    int c=0;
    for(int j=0;j<n;j++){
      if(i&(1<<j) && x[j]=='1'){
	c++;
	po.push_back(j);
      }
    }
    br.clear();
    for(int j=0;j<po.size();j++){
      for(int k=j+1;k<po.size();k++){
	dfs(po[j],-1,po[k]);
      }
    }
    for(int j=0;j<po.size();j++){
      if(br.find(po[j])!=br.end()) c--;
    }
    rp=max(rp,c-(int)br.size());
  }
  cout<<rp<<endl;
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:43:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for(int j=0;j<po.size();j++){
      |                 ~^~~~~~~~~~
power.cpp:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |       for(int k=j+1;k<po.size();k++){
      |                     ~^~~~~~~~~~
power.cpp:48:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for(int j=0;j<po.size();j++){
      |                 ~^~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 6 ms 204 KB Output is correct
3 Correct 17 ms 292 KB Output is correct
4 Correct 47 ms 272 KB Output is correct
5 Correct 116 ms 272 KB Output is correct
6 Correct 81 ms 204 KB Output is correct
7 Correct 266 ms 204 KB Output is correct
8 Correct 327 ms 272 KB Output is correct
9 Correct 105 ms 272 KB Output is correct
10 Correct 99 ms 204 KB Output is correct
11 Correct 288 ms 276 KB Output is correct
12 Correct 128 ms 268 KB Output is correct
13 Correct 114 ms 268 KB Output is correct
14 Correct 133 ms 268 KB Output is correct
15 Correct 23 ms 204 KB Output is correct
16 Correct 27 ms 296 KB Output is correct
17 Correct 139 ms 204 KB Output is correct
18 Correct 133 ms 280 KB Output is correct
19 Correct 12 ms 204 KB Output is correct
20 Correct 67 ms 280 KB Output is correct
21 Correct 241 ms 284 KB Output is correct

Subtask #2
0.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 6 ms 204 KB Output is correct
3 Correct 17 ms 292 KB Output is correct
4 Correct 47 ms 272 KB Output is correct
5 Correct 116 ms 272 KB Output is correct
6 Correct 81 ms 204 KB Output is correct
7 Correct 266 ms 204 KB Output is correct
8 Correct 327 ms 272 KB Output is correct
9 Correct 105 ms 272 KB Output is correct
10 Correct 99 ms 204 KB Output is correct
11 Correct 288 ms 276 KB Output is correct
12 Correct 128 ms 268 KB Output is correct
13 Correct 114 ms 268 KB Output is correct
14 Correct 133 ms 268 KB Output is correct
15 Correct 23 ms 204 KB Output is correct
16 Correct 27 ms 296 KB Output is correct
17 Correct 139 ms 204 KB Output is correct
18 Correct 133 ms 280 KB Output is correct
19 Correct 12 ms 204 KB Output is correct
20 Correct 67 ms 280 KB Output is correct
21 Correct 241 ms 284 KB Output is correct
22 Execution timed out 1580 ms 332 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #3
0.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 6 ms 204 KB Output is correct
3 Correct 17 ms 292 KB Output is correct
4 Correct 47 ms 272 KB Output is correct
5 Correct 116 ms 272 KB Output is correct
6 Correct 81 ms 204 KB Output is correct
7 Correct 266 ms 204 KB Output is correct
8 Correct 327 ms 272 KB Output is correct
9 Correct 105 ms 272 KB Output is correct
10 Correct 99 ms 204 KB Output is correct
11 Correct 288 ms 276 KB Output is correct
12 Correct 128 ms 268 KB Output is correct
13 Correct 114 ms 268 KB Output is correct
14 Correct 133 ms 268 KB Output is correct
15 Correct 23 ms 204 KB Output is correct
16 Correct 27 ms 296 KB Output is correct
17 Correct 139 ms 204 KB Output is correct
18 Correct 133 ms 280 KB Output is correct
19 Correct 12 ms 204 KB Output is correct
20 Correct 67 ms 280 KB Output is correct
21 Correct 241 ms 284 KB Output is correct
22 Execution timed out 1580 ms 332 KB Time limit exceeded
23 Halted 0 ms 0 KB -