Submission #224199

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
224199	2020-04-17 12:23:10	jamielim	Putovanje (COCI20_putovanje)	C++14	110 / 110	172 ms	36340 KiB

putovanje

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair <int,int> pii;
typedef pair <ll, ll> pll;
const int MAXN = 200100;
int n;
struct UnionFind {
  vector <int> v[MAXN];
  int connected[MAXN],par[MAXN];
  void init() {
    for(int i=0;i<MAXN;i++){
      v[i].clear();v[i].push_back(i);
      par[i]=i;
      connected[i]=0;
    }
  }
  void merge(int a, int b) {
    a = par[a];b = par[b];
    if ((int)v[a].size() < (int)v[b].size()) swap(a, b); //merging smaller into larger
    for (auto x : v[b]) {
      if (par[x - 1] == a) connected[a]++;
      if (par[x + 1] == a) connected[a]++;
      v[a].push_back(x);
    }
    for (auto x : v[b]) par[x] = a;
    connected[a] += connected[b];
  }
  int get(int x) { //number of times the edge from x to its parent (original tree) is used
 
 
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Compilation message (stderr)

putovanje.cpp: In function 'int main()':
putovanje.cpp:50:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
putovanje.cpp:53:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d",&a,&b,&c[i],&d[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 25 / 25
• Subtask 3: 65 / 65