Submission #1249155

#	Time	Username	Problem	Language	Result	Execution time	Memory
1249155		redacode	Dancing Elephants (IOI11_elephants)	C++20	Compilation error	0 ms	0 KiB

elephants

#include "elephants.h"
#include "bits/stdc++.h"
using namespace std;
int n;
int l;
bool cmp(pair<int, int>& a, 
        pair<int, int>& b) 
{ 
    return a.second < b.second; 
} 

set<pair<int, int> > A; 
/*
void sort_map(map<int, int>& M) 
{ 
    A.clear();
    for (auto& it : M) { 
        A.push_back(it); 
    } 

    sort(A.begin(), A.end(), cmp); 

} */

map<int,int> pos;

void init(int N, int L, int X[])
{
  n = N;
  l =L;
  for(int i=0;i<n;i++){
      pos[i]=X[i];
      A.insert({i,X[i]});
  }
}



int update(int i, int y)
{
    if(n==1){
        return 1;
    }
    A.erase({i,pos[i]});
   pos[i]=y;
   A.insert({i,pos[i]});
   //sort_map(pos);
   int cnt =0;
   int start = *A.begin();
   for(auto&: it){
       if(it.second-start>l){
           start = it.second;
           cnt++;
       }
       if(i==n-1) cnt++;
   }
   if(cnt==0)cnt++;
   return cnt;
}

Compilation message (stderr)

elephants.cpp: In function 'int update(int, int)':
elephants.cpp:49:16: error: cannot convert 'const std::pair<int, int>' to 'int' in initialization
   49 |    int start = *A.begin();
      |                ^~~~~~~~~~
      |                |
      |                const std::pair<int, int>
elephants.cpp:50:13: error: expected unqualified-id before ':' token
   50 |    for(auto&: it){
      |             ^
elephants.cpp:50:15: error: 'it' was not declared in this scope; did you mean 'i'?
   50 |    for(auto&: it){
      |               ^~
      |               i