oj.uz

Submission #915056

# Submission time Handle Problem Language Result Execution time Memory
915056 2024-01-23T09:02:08 Z xynex Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 175 ms 23512 KB 
/**
  * Author: Tenjin
  * Created: 27.04.2022 18:58
  * Why am I so stupid? :c
  * Slishkom slab
**/
#include "supertrees.h"
#include <bits/stdc++.h>

// #pragma GCC optimize("inline")
// #pragma GCC optimize("-fgcse,-fgcse-lm")
// #pragma GCC optimize("-ftree-pre,-ftree-vrp")
// #pragma GCC optimize("-ffast-math")
// #pragma GCC optimize("-fipa-sra")
// #pragma GCC optimize("-fpeephole2")
// #pragma GCC optimize("-fsched-spec")
// #pragma GCC optimize("Ofast,no-stack-protector")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
// #pragma GCC optimize("unroll-loops")

using namespace std;

#define ll long long
#define dl double long
#define ull unsigned long long
#define pr pair
#define vt vector
#define ff first
#define ss second
#define mp make_pair
#define sz(a) (int)a.size()
#define pb push_back
#define pf push_front
#define popB pop_back
#define popF pop_front
#define bit_count __builtin_popcount
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sp(x) fixed << setprecision(x)

template<typename T> T get_rand(T l, T r) {
  random_device rd;
  mt19937 gen(rd());
  return uniform_int_distribution<T>(l, r)(gen);
}
template<typename T> T lcm(T a, T b) { return a * (b / __gcd(a, b)); }

template<class A> void read(vt<A>& v);
template<class A, size_t S> void read(array<A, S>& a);
template<class T> void read(T& x) { cin >> x; }
void read(double& d) { string t; read(t); d = stod(t); }
void read(long double& d) { string t; read(t); d = stold(t); }
template<class H, class... T> void read(H& h, T&... t) { read(h); read(t...); }
template<class A> void read(vt<A>& x) { for (auto& a : x) read(a); }
template<class A, size_t S> void read(array<A, S>& x) { for (auto& a : x) read(a); }

string to_string(char c) { return string(1, c); }
string to_string(bool b) { return b ? "true" : "false"; }
string to_string(const char* s) { return string(s); }
string to_string(string s) { return s; }
string to_string(vt<bool> v) { string res; for (int i = 0; i < sz(v); ++i) res += char('0' + v[i]); return res; }
template<size_t S> string to_string(bitset<S> b) { string res; for (int i = 0; i < S; ++i) res += char('0' + b[i]); return res; }
template<class T> string to_string(T v) { bool f = 1; string res; for (auto x : v) { if (!f) res += ' '; f = 0; res += to_string(x); } return res; }

template<class A> void write(A x) { cout << to_string(x); }
template<class H, class... T> void write(const H& h, const T&... t) { write(h); write(t...); }

void print() { write("\n"); }
template<class H, class... T> void print(const H& h, const T&... t) { write(h); if (sizeof...(t)) write(' '); print(t...); }

void freop(string s) {
  freopen((s + ".in").c_str(), "r", stdin);
  freopen((s + ".out").c_str(), "w", stdout);
}

const int MOD = 1e9 + 7;
const ll INF = 1e14;
const int M = 2e5 + 5;
const dl pi = acos(-1);
const dl eps = 1e-12;
const int sq = 700;

int dx[] = {-1, 0, 1, 0};
int dy[] = {0, -1, 0, 1};
/* ll vs int*/


int construct(vt<vt<int>> P) {
  int n = sz(P);
  vt<vt<int> > comp;
  vt<int> whr(n, -1);
  int ps = 0;
  for(int i = 0; i < n; ++i) {
    if(whr[i] != -1) {
      int _ = 0;
      for(int j = 0; j < n; ++j) {
        if(P[i][j] == 1) {
          if(comp[whr[i]][_] != j) { return 0;}
          _++;
        }
      }
    }
    else {
      comp.pb({});
      for(int j = 0; j < n; ++j) {
        if(P[i][j] == 1) {
          if(whr[j] != -1) { return 0;}
          comp.back().pb(j);
          whr[j] = ps;
        }
      }
      ps++;
    }
    for(int j = 0; j < n; ++j) {
      if(P[i][j] != P[j][i]) {return 0;}
      if(P[i][j] == 3) return 0;
    }
  }
  comp.clear();
  ps = 0;
  for(auto &cur : whr) cur = -1;
  for(int i = 0; i < n; ++i) {
    if(whr[i] != -1) {
      int _ = 0;
      for(int j = 0; j < n; ++j) {
        if(P[i][j] >= 1) {
          if(comp[whr[i]][_] != j) { return 0;}
          _++;
        }
      }
    }
    else {
      comp.pb({});
      for(int j = 0; j < n; ++j) {
        if(P[i][j] >= 1) {
          if(whr[j] != -1) { return 0;}
          comp.back().pb(j);
          whr[j] = ps;
        }
      }
      ps++;
    }
  }

  vt<vt<int>> g(n, vt<int> (n));
  for(int i = 0; i < sz(comp); ++i) {
    int cyc = 0;
    vt<int> cycle;
    int ncyc = -1;
    int HAVE = -1;
    for(int j = 0; j < sz(comp[i]); ++j) {
      bool flag = 1, hv = 0;
      int XX = 0;
      for(int l = 0; l < sz(comp[i]); ++l) {
        if(j != l) {
          if(P[comp[i][j]][comp[i][l]] == 1) {
            flag = 0;
          }
          else if(P[comp[i][j]][comp[i][l]] == 2) {
            hv = 1;
            XX++;
          }
        }
      }
      HAVE = max(HAVE, XX);
      flag &= hv;
      //print(flag);
      cyc += flag;
      if(flag) cycle.pb(comp[i][j]);
      else ncyc = comp[i][j];
    }
    /*print(comp);
    print(cyc);*/
    if(HAVE <= 2 && HAVE != 0) {
      return 0;
    }
    for(auto cur : cycle) {
      g[cur][ncyc] = 1;
      g[ncyc][cur] = 1;
    }
    for(int j = 1; j < sz(comp[i]); ++j) {
      g[comp[i][j - 1]][comp[i][j]] = 1;
      g[comp[i][j]][comp[i][j - 1]] = 1;
    }
  }
  build(g);
  return 1;
}

/*
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  //freop("");
  int t = 1;
  //read(t);
  for (int i = 1; i <= t; ++i) {
    //write("Case #" + to_string(i) + ": ");
    solve();
  }
  return 0;
}*/

Compilation message

supertrees.cpp: In function 'void freop(std::string)':
supertrees.cpp:72:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
supertrees.cpp:73:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |   freopen((s + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 172 ms 23512 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 172 ms 23512 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 432 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1212 KB Output is correct
13 Correct 167 ms 23376 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 680 KB Output is correct
17 Correct 79 ms 9604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6308 KB Output is correct
21 Correct 166 ms 23408 KB Output is correct
22 Correct 166 ms 23488 KB Output is correct
23 Correct 171 ms 23376 KB Output is correct
24 Correct 167 ms 23492 KB Output is correct
25 Correct 76 ms 9420 KB Output is correct
26 Correct 80 ms 9428 KB Output is correct
27 Correct 171 ms 23364 KB Output is correct
28 Correct 175 ms 23380 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 1 ms 344 KB Answer gives possible 0 while actual possible 1
6 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 600 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 172 ms 23512 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 432 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1212 KB Output is correct
13 Correct 167 ms 23376 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 680 KB Output is correct
17 Correct 79 ms 9604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6308 KB Output is correct
21 Correct 166 ms 23408 KB Output is correct
22 Correct 166 ms 23488 KB Output is correct
23 Correct 171 ms 23376 KB Output is correct
24 Correct 167 ms 23492 KB Output is correct
25 Correct 76 ms 9420 KB Output is correct
26 Correct 80 ms 9428 KB Output is correct
27 Correct 171 ms 23364 KB Output is correct
28 Correct 175 ms 23380 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 432 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Incorrect 1 ms 344 KB Answer gives possible 0 while actual possible 1
34 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1372 KB Output is correct
7 Correct 172 ms 23512 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 432 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1212 KB Output is correct
13 Correct 167 ms 23376 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 680 KB Output is correct
17 Correct 79 ms 9604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6308 KB Output is correct
21 Correct 166 ms 23408 KB Output is correct
22 Correct 166 ms 23488 KB Output is correct
23 Correct 171 ms 23376 KB Output is correct
24 Correct 167 ms 23492 KB Output is correct
25 Correct 76 ms 9420 KB Output is correct
26 Correct 80 ms 9428 KB Output is correct
27 Correct 171 ms 23364 KB Output is correct
28 Correct 175 ms 23380 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 432 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Incorrect 1 ms 344 KB Answer gives possible 0 while actual possible 1
34 Halted 0 ms 0 KB -