Submission #74196

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
74196	2018-08-30T12:21:09 Z	nvmdava	Ancient Books (IOI17_books)	C++17	Compilation error	0 ms	0 KB

books

#include "books.h"
#include <bits/stdc++.h>
using namespace std;
int r = 0;
vector<int> p;
bool in[1000001];
void go(int v){
	if(in[v] == 1){
		k++;
		return;
	}
	in[v] = 1;
	r = max(r, v);
	go(p[v]);
}

long long minimum_walk(vector<int> p, int s) {
	::p = p;
	int q = 0;
	long long ans = 0;
	for(int i = 0; i < p.size(); i++){
		ans += (long long)abs(i - p[i]);
		if(in[i] || p[i] == i) continue;
		if(r < i){
			q = i;
		}
		go(i);
	}
	
	ans += (long long) q * 2;
	return ans;
}

Compilation message

books.cpp: In function 'void go(int)':
books.cpp:9:3: error: 'k' was not declared in this scope
   k++;
   ^
books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:21:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < p.size(); i++){
                 ~~^~~~~~~~~~