oj.uz

Submission #640240

# Submission time Handle Problem Language Result Execution time Memory
640240 2022-09-14T04:11:12 Z devariaota Stranded Far From Home (BOI22_island) C++17
20 / 100
 262 ms 34668 KB 
#include <bits/stdc++.h>
using namespace std;

#define nyahalo ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define otsumiko exit(0);
#define mikodanye priority_queue<pair<long long, long long>, vector<pair<long long, long long> >, greater<pair<long long, long long> > >
#define mikochi priority_queue<long long, vector<long long>, greater<long long> >

long long n, m, s[200069], a, b, vd[200069], cs, nov, nn, cv, cn, sb2 = 1, tn, pv[200069], dp[200069], z[200069], pi;
vector<long long> al[200069];
mikodanye pq;

void dfs(long long cn, long long pn) {
  long long i, j, nn;
  pv[cn] = pn;
  dp[cn] = s[cn];
  for (i=0; i<al[cn].size(); i++) {
    nn = al[cn][i];
    if (nn == pn) {
      continue;
    }
    dfs(nn, cn);
    dp[cn] += dp[nn];
  }
}

int main() {
  nyahalo
  long long i, j;
  cin >> n >> m;
  for (i=1; i<=n; i++) {
    cin >> s[i];
    if (i>1) {
      if (s[i]>s[i-1]) {
        sb2 = 0;
      }
    }
  }
  for (i=1; i<=m; i++) {
    cin >> a >> b;
    al[a].push_back(b);
    al[b].push_back(a);
  }
  for (i=2; i<=n; i++) {
    tn = 0;
    for (j=0; j<al[i].size(); j++) {
      cn = al[i][j];
      if (cn<i) {
        tn++;
      }
    }
    if (tn != 1) {
      sb2 = 0;
      break;
    }
  }
  if (n<=2000 && m<=2000) {
    for (i=1; i<=n; i++) {
      for (j=1; j<=n; j++) {
        vd[j] = 0;
      }
      nov = 0;
      cs = 0;
      pq.push(make_pair(s[i], i));
      vd[i] = 1;
      for (; !pq.empty(); ) {
        cv = pq.top().first;
        cn = pq.top().second;
        pq.pop();
        if (cs<cv && cn != i) {
          break;
        }
        nov++;
        cs += cv;
        for (j=0; j<al[cn].size(); j++) {
          nn = al[cn][j];
          if (vd[nn] == 0) {
            vd[nn] = 1;
            pq.push(make_pair(s[nn], nn));
          }
        }
      }
      for (; !pq.empty(); ) {
        pq.pop();
      }
      if (nov == n) {
        cout << "1";
      } else {
        cout << "0";
      }
    }
    cout << "\n";
    otsumiko
  }
  if (sb2 == 1) {
    dfs(1, -1);
    z[1] = 1;
    for (i=2; i<=n; i++) {
      pi = pv[i];
      if (dp[i]>=s[pi] && z[pi] == 1) {
        z[i] = 1;
      } else {
        z[i] = 0;
      }
    }
    for (i=1; i<=n; i++) {
      cout << z[i];
    }
    cout << "\n";
    otsumiko
  }
  cout << "sabar deck\n";
  otsumiko
}

Compilation message

island.cpp: In function 'void dfs(long long int, long long int)':
island.cpp:17:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   for (i=0; i<al[cn].size(); i++) {
      |             ~^~~~~~~~~~~~~~
island.cpp:14:16: warning: unused variable 'j' [-Wunused-variable]
   14 |   long long i, j, nn;
      |                ^
island.cpp: In function 'int main()':
island.cpp:46:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |     for (j=0; j<al[i].size(); j++) {
      |               ~^~~~~~~~~~~~~
island.cpp:75:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         for (j=0; j<al[cn].size(); j++) {
      |                   ~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 162 ms 5144 KB Output is correct
5 Correct 157 ms 5176 KB Output is correct
6 Correct 215 ms 5164 KB Output is correct
7 Correct 162 ms 5176 KB Output is correct
8 Correct 112 ms 5152 KB Output is correct
9 Correct 262 ms 5200 KB Output is correct
10 Correct 68 ms 5076 KB Output is correct
11 Correct 65 ms 5076 KB Output is correct
12 Correct 75 ms 5176 KB Output is correct
13 Correct 122 ms 5140 KB Output is correct
14 Correct 96 ms 5152 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 131 ms 23632 KB Output is correct
4 Correct 124 ms 26760 KB Output is correct
5 Correct 142 ms 22628 KB Output is correct
6 Correct 154 ms 23172 KB Output is correct
7 Correct 159 ms 23092 KB Output is correct
8 Correct 147 ms 23164 KB Output is correct
9 Correct 129 ms 24380 KB Output is correct
10 Correct 94 ms 22852 KB Output is correct
11 Correct 87 ms 22636 KB Output is correct
12 Correct 159 ms 21756 KB Output is correct
13 Correct 122 ms 33152 KB Output is correct
14 Correct 122 ms 33268 KB Output is correct
15 Correct 125 ms 34668 KB Output is correct
16 Correct 81 ms 33628 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Incorrect 101 ms 12872 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Incorrect 110 ms 13804 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 162 ms 5144 KB Output is correct
5 Correct 157 ms 5176 KB Output is correct
6 Correct 215 ms 5164 KB Output is correct
7 Correct 162 ms 5176 KB Output is correct
8 Correct 112 ms 5152 KB Output is correct
9 Correct 262 ms 5200 KB Output is correct
10 Correct 68 ms 5076 KB Output is correct
11 Correct 65 ms 5076 KB Output is correct
12 Correct 75 ms 5176 KB Output is correct
13 Correct 122 ms 5140 KB Output is correct
14 Correct 96 ms 5152 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 131 ms 23632 KB Output is correct
18 Correct 124 ms 26760 KB Output is correct
19 Correct 142 ms 22628 KB Output is correct
20 Correct 154 ms 23172 KB Output is correct
21 Correct 159 ms 23092 KB Output is correct
22 Correct 147 ms 23164 KB Output is correct
23 Correct 129 ms 24380 KB Output is correct
24 Correct 94 ms 22852 KB Output is correct
25 Correct 87 ms 22636 KB Output is correct
26 Correct 159 ms 21756 KB Output is correct
27 Correct 122 ms 33152 KB Output is correct
28 Correct 122 ms 33268 KB Output is correct
29 Correct 125 ms 34668 KB Output is correct
30 Correct 81 ms 33628 KB Output is correct
31 Correct 2 ms 4948 KB Output is correct
32 Incorrect 101 ms 12872 KB Output isn't correct
33 Halted 0 ms 0 KB -