Submission #412945

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
412945	2021-05-27T20:36:45 Z	Pichon5	Ancient Books (IOI17_books)	C++17	Compilation error	0 ms	0 KB

books

#include<bits/stdc++.h>
#define ll long long int
#define pb push_back
#define vi vector<int>
using namespace std;


ll minimum_walk(vector<int> p,int s){
   ll res=0;
   int n=p.size();
   vi cant(n+2,0);
   for(int i=0;i<n;i++){
      if(p[i]==i)continue;
      res+=abs(i-p[i]);
      int mi=min(i,p[i]);
      int ma=max(i,p[i]);
      cant[mi]++;
      cant[ma+1]--;
   }  
   
   int sum=0;
   int acum=0;
   for(int i=0;i<n;i++){
      acum+=cant[i];
      if(acum==0){
         sum++;
      }else{
         res+=2*sum;
         sum=0;        
      }
   }
   return res;   
}
int main(){
   int n,x;
   cin>>n;
   vi v;
   for(int i=0;i<n;i++){
      cin>>x;
      v.pb(x);
   }
   cout<<minimum_walk(v,0)<<endl;

   return 0;
}

Compilation message

/usr/bin/ld: /tmp/ccCJQZNx.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccpAhPOy.o:books.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status