Submission #532816

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
532816	2022-03-04 02:39:50	couplefire	Port Facility (JOI17_port_facility)	C++17	100 / 100	1475 ms	182968 KiB

port_facility

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1e6+15,mod = 1e9+7;
int L[N],R[N];
 
int par[N],enemy[N];
 
int find(int a){
  if(a==-1)return -1;
  if(a==par[a])return a;
  return par[a]= find(par[a]);
}
 
set<int> dsuid[N];
set<pair<int,int> >minid;
int sz[N];
 
void push(int x,int y){
 
  minid.erase(make_pair(*dsuid[y].begin(),y));
  minid.erase(make_pair(*dsuid[x].begin(),x));
  while(dsuid[y].size()>0){
    dsuid[x].insert(*dsuid[y].begin());
    dsuid[y].erase(dsuid[y].begin());
  }
  minid.insert(make_pair(*dsuid[x].begin(),x) );
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

port_facility.cpp: In function 'int main()':
port_facility.cpp:77:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |  for(int i=0;i<v.size();++i){
      |              ~^~~~~~~~~
port_facility.cpp:62:11: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |      scanf("%d%d",&L[i],&R[i]);
      |      ~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 56 / 56
• Subtask 4: 22 / 22