oj.uz

Submission #575179

# Submission time Handle Problem Language Result Execution time Memory
575179 2022-06-09T20:38:27 Z Sam_a17 Stranded Far From Home (BOI22_island) C++17
100 / 100
 631 ms 64420 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;

#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif

#define sz(x) (int((x).size()))
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());
#define blt __builtin_popcount

#define pb push_back
#define popf pop_front
#define popb pop_back

void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}

template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(deque<T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'

// for grid problems
int dx[8] = {-1,0,1,0,1,-1,1,-1};
int dy[8] = {0,1,0,-1,1,1,-1,-1};

// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
  fastIO();

  if (str != "") {
    freopen((str + ".in").c_str(), "r", stdin);
    freopen((str + ".out").c_str(), "w", stdout);
  }
}
// Indexed Set
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const int N = 4e5 + 10;
long long n, m, p[N], sz[N], answ[N];
long long value[N];
set<pair<long long, int>> st;
vector<long long> adj[N], comp[N];

long long find(long long a) {
  if(a != p[a]) {
    p[a] = find(p[a]);
  }
  return p[a];
}

long long merge(long long a, long long b) {
  a = find(a), b = find(b);
  if(a == b) {
    return false;
  }
  if(sz(comp[a]) < sz(comp[b])) {
    swap(a, b);
  }

  auto it = st.find({value[b], b});
  if(it != st.end()) {
    st.erase(it);
  }

  it = st.find({value[a], a});
  if(it != st.end()) {
    st.erase(it);
  }

  p[b] = a, sz[a] += sz[b];
  value[a] += value[b];

  st.insert({value[a], a});

  for(auto i: comp[b]) {
    comp[a].push_back(i);
  } comp[b].clear();
  return true;
}

void solve_() {
  cin >> n >> m;

  vector<pair<long long, int>> A(n + 1);
  vector<long long> B(n + 1);
  for(int i = 1; i <= n; i++) {
    cin >> A[i].first;
    A[i].second = i;
    B[i] = A[i].first;

    p[i] = i, sz[i] = 1;
    value[i] = A[i].first;
    comp[i].push_back(i);

    st.insert({value[i], i});
    answ[i] = 1;
  }

  for(int i = 1; i <= m; i++) {
    int a, b; cin >> a >> b;
    adj[a].push_back(b);
    adj[b].push_back(a);
  }

  sort(all(A));

  for(int i = 1; i <= n; i++) {
    int j = i;
    while(j <= n && A[j].first == A[i].first) {
      for(auto k: adj[A[j].second]) {
        if(B[k] <= A[j].first) {
          merge(k, A[j].second);
        }
      }
      j++;
    }

    if(j > n) {
      break;
    }

    while(!st.empty() && st.begin()->first < A[j].first) {
      long long c = find(st.begin()->second);

      for(auto k: comp[c]) {
        answ[k] = 0;
      }
      comp[c].clear();
      st.erase(st.begin());
    }

    i = j - 1;
  }

  for(int i = 1; i <= n; i++) {
    printf("%lld", answ[i]);
  } printf("\n");
}

int main() {
  setIO("");

  auto solve = [&](int test_case)-> void {
    while(test_case--) {
      solve_();
    }
  };

  int test_cases = 1;
  solve(test_cases);

  return 0;
}

Compilation message

island.cpp: In function 'void setIO(std::string)':
island.cpp:64:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |     freopen((str + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
island.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     freopen((str + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Correct 10 ms 19028 KB Output is correct
4 Correct 12 ms 19412 KB Output is correct
5 Correct 12 ms 19556 KB Output is correct
6 Correct 13 ms 19412 KB Output is correct
7 Correct 14 ms 19480 KB Output is correct
8 Correct 15 ms 19408 KB Output is correct
9 Correct 14 ms 19412 KB Output is correct
10 Correct 15 ms 19540 KB Output is correct
11 Correct 17 ms 19540 KB Output is correct
12 Correct 14 ms 19480 KB Output is correct
13 Correct 13 ms 19412 KB Output is correct
14 Correct 12 ms 19552 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19092 KB Output is correct
2 Correct 9 ms 19056 KB Output is correct
3 Correct 286 ms 58364 KB Output is correct
4 Correct 300 ms 58328 KB Output is correct
5 Correct 403 ms 59636 KB Output is correct
6 Correct 417 ms 61104 KB Output is correct
7 Correct 440 ms 61024 KB Output is correct
8 Correct 400 ms 58432 KB Output is correct
9 Correct 273 ms 64340 KB Output is correct
10 Correct 220 ms 56848 KB Output is correct
11 Correct 389 ms 59704 KB Output is correct
12 Correct 497 ms 58168 KB Output is correct
13 Correct 264 ms 57248 KB Output is correct
14 Correct 299 ms 57508 KB Output is correct
15 Correct 249 ms 57328 KB Output is correct
16 Correct 200 ms 56912 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19080 KB Output is correct
2 Correct 589 ms 61104 KB Output is correct
3 Correct 620 ms 61456 KB Output is correct
4 Correct 279 ms 57216 KB Output is correct
5 Correct 272 ms 57464 KB Output is correct
6 Correct 607 ms 61304 KB Output is correct
7 Correct 272 ms 57264 KB Output is correct
8 Correct 293 ms 57272 KB Output is correct
9 Correct 201 ms 56832 KB Output is correct
10 Correct 301 ms 56260 KB Output is correct
11 Correct 331 ms 56696 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Correct 580 ms 58596 KB Output is correct
3 Correct 522 ms 59364 KB Output is correct
4 Correct 509 ms 61352 KB Output is correct
5 Correct 589 ms 62780 KB Output is correct
6 Correct 592 ms 58548 KB Output is correct
7 Correct 312 ms 59792 KB Output is correct
8 Correct 265 ms 59160 KB Output is correct
9 Correct 211 ms 41204 KB Output is correct
10 Correct 608 ms 64344 KB Output is correct
11 Correct 340 ms 56724 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 19028 KB Output is correct
2 Correct 10 ms 19028 KB Output is correct
3 Correct 10 ms 19028 KB Output is correct
4 Correct 12 ms 19412 KB Output is correct
5 Correct 12 ms 19556 KB Output is correct
6 Correct 13 ms 19412 KB Output is correct
7 Correct 14 ms 19480 KB Output is correct
8 Correct 15 ms 19408 KB Output is correct
9 Correct 14 ms 19412 KB Output is correct
10 Correct 15 ms 19540 KB Output is correct
11 Correct 17 ms 19540 KB Output is correct
12 Correct 14 ms 19480 KB Output is correct
13 Correct 13 ms 19412 KB Output is correct
14 Correct 12 ms 19552 KB Output is correct
15 Correct 11 ms 19092 KB Output is correct
16 Correct 9 ms 19056 KB Output is correct
17 Correct 286 ms 58364 KB Output is correct
18 Correct 300 ms 58328 KB Output is correct
19 Correct 403 ms 59636 KB Output is correct
20 Correct 417 ms 61104 KB Output is correct
21 Correct 440 ms 61024 KB Output is correct
22 Correct 400 ms 58432 KB Output is correct
23 Correct 273 ms 64340 KB Output is correct
24 Correct 220 ms 56848 KB Output is correct
25 Correct 389 ms 59704 KB Output is correct
26 Correct 497 ms 58168 KB Output is correct
27 Correct 264 ms 57248 KB Output is correct
28 Correct 299 ms 57508 KB Output is correct
29 Correct 249 ms 57328 KB Output is correct
30 Correct 200 ms 56912 KB Output is correct
31 Correct 10 ms 19080 KB Output is correct
32 Correct 589 ms 61104 KB Output is correct
33 Correct 620 ms 61456 KB Output is correct
34 Correct 279 ms 57216 KB Output is correct
35 Correct 272 ms 57464 KB Output is correct
36 Correct 607 ms 61304 KB Output is correct
37 Correct 272 ms 57264 KB Output is correct
38 Correct 293 ms 57272 KB Output is correct
39 Correct 201 ms 56832 KB Output is correct
40 Correct 301 ms 56260 KB Output is correct
41 Correct 331 ms 56696 KB Output is correct
42 Correct 10 ms 19028 KB Output is correct
43 Correct 580 ms 58596 KB Output is correct
44 Correct 522 ms 59364 KB Output is correct
45 Correct 509 ms 61352 KB Output is correct
46 Correct 589 ms 62780 KB Output is correct
47 Correct 592 ms 58548 KB Output is correct
48 Correct 312 ms 59792 KB Output is correct
49 Correct 265 ms 59160 KB Output is correct
50 Correct 211 ms 41204 KB Output is correct
51 Correct 608 ms 64344 KB Output is correct
52 Correct 340 ms 56724 KB Output is correct
53 Correct 11 ms 19028 KB Output is correct
54 Correct 10 ms 19028 KB Output is correct
55 Correct 10 ms 19028 KB Output is correct
56 Correct 13 ms 19412 KB Output is correct
57 Correct 13 ms 19476 KB Output is correct
58 Correct 12 ms 19456 KB Output is correct
59 Correct 12 ms 19472 KB Output is correct
60 Correct 11 ms 19428 KB Output is correct
61 Correct 12 ms 19540 KB Output is correct
62 Correct 12 ms 19540 KB Output is correct
63 Correct 15 ms 19540 KB Output is correct
64 Correct 13 ms 19512 KB Output is correct
65 Correct 14 ms 19476 KB Output is correct
66 Correct 14 ms 19508 KB Output is correct
67 Correct 314 ms 58308 KB Output is correct
68 Correct 278 ms 58272 KB Output is correct
69 Correct 458 ms 59688 KB Output is correct
70 Correct 403 ms 60984 KB Output is correct
71 Correct 426 ms 61136 KB Output is correct
72 Correct 411 ms 58304 KB Output is correct
73 Correct 272 ms 64344 KB Output is correct
74 Correct 201 ms 56836 KB Output is correct
75 Correct 395 ms 59712 KB Output is correct
76 Correct 443 ms 58144 KB Output is correct
77 Correct 314 ms 57276 KB Output is correct
78 Correct 263 ms 57456 KB Output is correct
79 Correct 252 ms 57320 KB Output is correct
80 Correct 218 ms 56844 KB Output is correct
81 Correct 618 ms 61264 KB Output is correct
82 Correct 578 ms 61708 KB Output is correct
83 Correct 321 ms 57200 KB Output is correct
84 Correct 268 ms 57540 KB Output is correct
85 Correct 599 ms 61288 KB Output is correct
86 Correct 280 ms 57296 KB Output is correct
87 Correct 283 ms 57308 KB Output is correct
88 Correct 326 ms 56284 KB Output is correct
89 Correct 348 ms 56688 KB Output is correct
90 Correct 567 ms 58632 KB Output is correct
91 Correct 528 ms 59336 KB Output is correct
92 Correct 556 ms 61440 KB Output is correct
93 Correct 631 ms 62940 KB Output is correct
94 Correct 533 ms 58588 KB Output is correct
95 Correct 346 ms 59672 KB Output is correct
96 Correct 233 ms 58948 KB Output is correct
97 Correct 223 ms 41364 KB Output is correct
98 Correct 572 ms 64420 KB Output is correct
99 Correct 359 ms 56612 KB Output is correct
100 Correct 48 ms 24284 KB Output is correct
101 Correct 578 ms 60080 KB Output is correct
102 Correct 405 ms 52120 KB Output is correct
103 Correct 436 ms 52228 KB Output is correct
104 Correct 588 ms 57864 KB Output is correct