Submission #827882

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
827882	2023-08-16 21:26:21	Liudas	Keys (IOI21_keys)	C++17	Compilation error	0 ms	0 KiB

keys

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#include <vector>
#include "keys.h"
#include <cassert>
#include <cstdio>
#include <queue>
using namespace std;
typedef pair<int,int> pi;
#define MAXN 300000
#define MAXM 300000
#define MAXK 300000
// BEGIN UFDS
int par[MAXN + 5], sz[MAXN + 5];
void init(){
  for (int i = 0; i < MAXN; ++i){
    par[i] = i;
    sz[i] = 0;
  }
}
int findPar(int x){
  if (par[x] != x) par[x] = findPar(par[x]);
  return par[x];
}
void merg(int x, int y){ // we can't merge by rank here
  par[findPar(x)] = findPar(y);
 
 
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Compilation message (stderr)

keys.cpp: In function 'void runBFS(int, int)':
keys.cpp:90:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   90 |  if (reach.size() < ans){
      |      ~~~~~~~~~~~~~^~~~~
keys.cpp:94:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   94 |  if (reach.size() == ans){
      |      ~~~~~~~~~~~~~^~~~~~
/usr/bin/ld: /tmp/ccIZ7kNV.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccFdoOhV.o:keys.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status