Submission #1075945

#	Time	Username	Problem	Language	Result	Execution time	Memory
1075945		amin	Ancient Books (IOI17_books)	C++14	12 / 100	1 ms	348 KiB

books

#include "books.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
long long minimum_walk(vector<int> p, int s) {
	ll ans=0;
	ll n=p.size();
	ll ma=0;
	ll mi=-1;
	int o[n+1];
	for(int i=0;i<=n;i++)
    {
        o[i]=0;
    }
    int pre=0;
    for(int i=n-1;i>=0;i--)
    {


        if(p[i]==i)
        ans-=2;
        else
            break;
    }
	for(int i=0;i<n;i++)
    {
        pre+=o[i];
        if(p[i]==i)
        {
            if(pre==0)
                ans+=2;
        }
       if(p[i]>i)
       {


        pre++;
        o[p[i]+1]--;
       }

            ans+=abs(p[i]-i);
    }

    return ans;
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:8:5: warning: unused variable 'ma' [-Wunused-variable]
    8 |  ll ma=0;
      |     ^~
books.cpp:9:5: warning: unused variable 'mi' [-Wunused-variable]
    9 |  ll mi=-1;
      |     ^~

• Subtask 1: 12 / 12
• Subtask 2: 0 / 10
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30