oj.uz

답안 #575077

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
575077 2022-06-09T15:39:26 Z Sam_a17 Stranded Far From Home (BOI22_island) C++14
10 / 100
 1000 ms 524288 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 = 3e5 + 10;
int n, m, p[N], sz[N], answ[N];
long long value[N];
set<pair<long long, int>> st;
vector<int> adj[N], comp[N];

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

int merge(int a, int b) {
  a = find(a), b = find(b);
  if(a == b) {
    return false;
  }
  if(sz[a] > sz[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++) {
    long long curr = A[i].first;
    int j = i;
    while(j <= n && A[j].first == A[i].first) {
      for(auto k: adj[A[j].second]) {
        if(B[k] <= curr) {
          merge(k, A[j].second);
        }
      }
      j++;
    }

    if(j > n) {
      break;
    }

    while(sz(st) && st.begin()->first < A[j].first) {
      int c = find(st.begin()->second);
      for(auto k: comp[c]) {
        answ[k] = 0;
      }
      comp[c].clear(), sz[c] = 0;
      st.erase(st.begin());
    }

    i = j - 1;
  }

  for(int i = 1; i <= n; i++) {
    printf("%d", 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

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14444 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 14 ms 16980 KB Output is correct
5 Correct 11 ms 15428 KB Output is correct
6 Correct 14 ms 18152 KB Output is correct
7 Correct 13 ms 16920 KB Output is correct
8 Correct 13 ms 16596 KB Output is correct
9 Correct 17 ms 19796 KB Output is correct
10 Correct 10 ms 14804 KB Output is correct
11 Correct 10 ms 14804 KB Output is correct
12 Correct 10 ms 14768 KB Output is correct
13 Correct 21 ms 24916 KB Output is correct
14 Correct 10 ms 15004 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Runtime error 738 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14356 KB Output is correct
2 Correct 681 ms 59520 KB Output is correct
3 Correct 612 ms 60596 KB Output is correct
4 Runtime error 717 ms 524288 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Execution timed out 1082 ms 524288 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14444 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 14 ms 16980 KB Output is correct
5 Correct 11 ms 15428 KB Output is correct
6 Correct 14 ms 18152 KB Output is correct
7 Correct 13 ms 16920 KB Output is correct
8 Correct 13 ms 16596 KB Output is correct
9 Correct 17 ms 19796 KB Output is correct
10 Correct 10 ms 14804 KB Output is correct
11 Correct 10 ms 14804 KB Output is correct
12 Correct 10 ms 14768 KB Output is correct
13 Correct 21 ms 24916 KB Output is correct
14 Correct 10 ms 15004 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 8 ms 14420 KB Output is correct
17 Runtime error 738 ms 524288 KB Execution killed with signal 9
18 Halted 0 ms 0 KB -