Submission #649231

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
649231	2022-10-09 16:46:28	blue	Thousands Islands (IOI22_islands)	C++17	100 / 100	141 ms	21872 KiB

islands

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#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
 
using vi = vector<int>;
using pii = pair<int, int>;
using vpii = vector<pii>;
#define sz(x) int(x.size())
 
const int mx = 100'000;
 
vpii edge[mx];
vpii revedge[mx];
 
int N, M;
 
queue<int> tbv;
 
int src = 0;
 
vi pushed(mx, 0);
vi killed(mx, 0);
 
vi outdeg(mx, 0);
 
vi incedge(mx, -1);
 
void addvec(vi& a, vi& b)
{
  for(int u : b)
 
 
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Compilation message (stderr)

islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, vi, vi)':
islands.cpp:284:8: warning: 'newsrc' may be used uninitialized in this function [-Wmaybe-uninitialized]
  284 |    src = newsrc;
      |    ~~~~^~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 21 / 21
• Subtask 4: 24 / 24
• Subtask 5: 45 / 45