oj.uz

Submission #604244

# Submission time Handle Problem Language Result Execution time Memory
604244 2022-07-24T23:18:26 Z DanerZein Stranded Far From Home (BOI22_island) C++14
40 / 100
 1000 ms 28908 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> ii;
const int MAX_N=2e5+10;
vector<vi> G;
ll ha[MAX_N];
bool vis[MAX_N];
bool ans[MAX_N];
int n,m;
vector<int> cma;
vector<int> con;
ll dfs(int u,int ma){
  if(ma==ha[u])
    con.push_back(u);
  vis[u]=1;
  ll s=ha[u];
  for(auto &v:G[u]){
    if(ma<ha[v]){
      cma.push_back(v);
    }
    else{
      if(!vis[v]){
	s+=dfs(v,ma);
      }
    }
  }
  return s;
}
int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL); cout.tie(NULL);
  cin>>n>>m;
  G.resize(n+1);
  for(int i=0;i<n;i++) cin>>ha[i];
  for(int i=0;i<m;i++){
    int a,b; cin>>a>>b;
    a--; b--;
    G[a].push_back(b);
    G[b].push_back(a);
  }
  vector<int> dh;
  for(int i=0;i<n;i++){
    dh.push_back(ha[i]);
  }
  sort(dh.begin(),dh.end());
  dh.erase(unique(dh.begin(),dh.end()),dh.end());
  reverse(dh.begin(),dh.end());
  for(int i=0;i<n;i++){
    if(ha[i]==dh[0])
      ans[i]=1;
  }
  for(int h=1;h<dh.size();h++){
    int v=dh[h];
    memset(vis,0,sizeof vis);
    for(int i=0;i<n;i++){
      if(!vis[i] && ha[i]==v){
	con.clear();
	cma.clear();
	ll s=dfs(i,v);
	bool ok=0;
	for(int j=0;j<cma.size();j++){
	  if(s>=ha[cma[j]])
	    ok|=ans[cma[j]];
	}
	for(int j=0;j<con.size();j++){
	  ans[con[j]]=ok;
	}
      }
    }
  }
  string pr="";
  for(int i=0;i<n;i++){
    if(ans[i]) pr+='1';
    else pr+='0';
  }
  cout<<pr<<endl;
}

Compilation message

island.cpp: In function 'int main()':
island.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 h=1;h<dh.size();h++){
      |               ~^~~~~~~~~~
island.cpp:63:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |  for(int j=0;j<cma.size();j++){
      |              ~^~~~~~~~~~~
island.cpp:67:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |  for(int j=0;j<con.size();j++){
      |              ~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 29 ms 692 KB Output is correct
5 Correct 14 ms 676 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 24 ms 724 KB Output is correct
8 Correct 23 ms 676 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 11 ms 724 KB Output is correct
11 Correct 16 ms 732 KB Output is correct
12 Correct 11 ms 664 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 4 ms 596 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Execution timed out 1092 ms 20192 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 1095 ms 21228 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 200 ms 14628 KB Output is correct
3 Correct 191 ms 14528 KB Output is correct
4 Correct 211 ms 14596 KB Output is correct
5 Correct 109 ms 14668 KB Output is correct
6 Correct 97 ms 13780 KB Output is correct
7 Correct 83 ms 16132 KB Output is correct
8 Correct 76 ms 23320 KB Output is correct
9 Correct 98 ms 8900 KB Output is correct
10 Correct 121 ms 15520 KB Output is correct
11 Correct 173 ms 28908 KB Output is correct

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 29 ms 692 KB Output is correct
5 Correct 14 ms 676 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 24 ms 724 KB Output is correct
8 Correct 23 ms 676 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 11 ms 724 KB Output is correct
11 Correct 16 ms 732 KB Output is correct
12 Correct 11 ms 664 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 4 ms 596 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Execution timed out 1092 ms 20192 KB Time limit exceeded
18 Halted 0 ms 0 KB -