Submission #302236

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
302236	2020-09-18 14:37:51	leejseo	Connecting Supertrees (IOI20_supertrees)	C++17	40 / 100	276 ms	22264 KiB

supertrees

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#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
int N;
vector<vector<int>> ans;
struct DisjointSet{
  int par[1005];
  DisjointSet(){
    for (int i=0; i<1005; i++) par[i] = i;
  }
  int root(int u){
    if (par[u] == u) return u;
    return par[u] = root(par[u]); 
  }
  bool chk(int u, int v){
    return root(u) == root(v);
  }
  void merge(int u, int v){
    u = root(u); v = root(v);
    if (u != v) par[u] = v;
  }
} disj, uf;
const bool ST4 = true, ST5 = false;
int construct(vector<vector<int>> p) {
  int N = p.size();
  for (int i = 0; i < N; i++) {
    vector<int> row;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:104:18: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
  104 |      if (p[i][j] > 0 != disj.chk(i, j)){
supertrees.cpp:130:7: warning: unused variable 'x' [-Wunused-variable]
  130 |   int x = true; // pass
      |       ^
supertrees.cpp:142:17: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
  142 |     if (p[i][j] > 0 != disj.chk(i, j)){

• Subtask 1: 11 / 11
• Subtask 2: 10 / 10
• Subtask 3: 19 / 19
• Subtask 4: 0 / 35
• Subtask 5: 0 / 21
• Subtask 6: 0 / 4