Submission #603222

#	Time	Username	Problem	Language	Result	Execution time	Memory
603222		mosiashvililuka	Ancient Books (IOI17_books)	C++14	50 / 100	172 ms	38332 KiB

books

#include<bits/stdc++.h>
#include "books.h"
using namespace std;
long long a,b,c,d,e,i,j,ii,jj,zx,xc,f[1000009],S,bo[1000009],G[1000009],pas,mx;
long long minimum_walk(std::vector<int> Pp, int Ss) {
    a=Pp.size();S=Ss+1;
    for(i=1; i<=a; i++) f[i]=Pp[i-1]+1;
    zx=1;
    for(i=1; i<=a; i++){
        if(bo[i]==1) continue;
        c=i;mx=i;
        while(1){
            bo[c]=1;
            G[i]+=abs(c-f[c]);
            mx=max(mx,c);
            c=f[c];
            if(c==i) break;
        }
        pas+=G[i];
        if(G[i]!=0){
            if(zx<i){
                pas+=(i-zx)*2LL;
            }
            zx=max(zx,mx);
        }
    }
    return pas;
}

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