Submission #423552

#	Time	Username	Problem	Language	Result	Execution time	Memory
423552		Bill_00	Ancient Books (IOI17_books)	C++14	0 / 100	1 ms	304 KiB

books

#include "books.h"
#include  <bits/stdc++.h>
#define ll long long
using namespace std;
ll vis[1000005],ans,p[1000005];
void dfs(int node){
	vis[node]=1;
	ans+=(abs(p[node]-node));
	if(vis[p[node]]==1){
		return;
	}
	dfs(p[node]);
}
long long minimum_walk(std::vector<int> P, int s){
	int pre=0;
	for(int i=0;i<P.size();i++) p[i]=P[i];
	for(int i=0;i<P.size();i++){
		if(vis[i]==0 && i!=p[i]){
			ans+=(i-pre);
			dfs(i);
			pre=i;
		}
	}
	return ans+pre;
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:16:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for(int i=0;i<P.size();i++) p[i]=P[i];
      |              ~^~~~~~~~~
books.cpp:17:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |  for(int i=0;i<P.size();i++){
      |              ~^~~~~~~~~

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