Submission #129679

#	Time	Username	Problem	Language	Result	Execution time	Memory
129679		nxteru	Rail (IOI14_rail)	C++14	30 / 100	85 ms	636 KiB

rail

#include "rail.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> P;
#define F first
#define S second
#define PB push_back
int mac,mad,mic,mid;
vector<P>p;
int h[5005];
void findLocation(int n, int f, int l[], int t[]){
	l[0]=f,t[0]=1;
	for(int i=1;i<n;i++)p.PB(P(getDistance(0,i),i));
	sort(p.begin(),p.end());
	mad=p[0].S,mid=p[0].S;
	l[p[0].S]=f+p[0].F;
	h[p[0].S]=p[0].F;
	t[p[0].S]=2;
	for(int i=1;i<p.size();i++){
		int d=p[i].F,x=p[i].S;
		h[x]=d;
		int a=getDistance(mic,x),b=getDistance(mad,x);
		if(a-b==l[mid]*2-l[mic]-l[mad]&&l[mad]-l[mic]<b)l[x]=l[mad]-b,t[x]=1;
		else if(h[mad]<b&&l[mad]-l[mic]>a)l[x]=l[mic]+a,t[x]=2;
		else if(a-b!=l[mac]*2-l[mad]-l[mic])l[x]=l[mad]-b,t[x]=1;
		else l[x]=l[mic]+a,t[x]=2;
		if(t[x]==1){
			if(l[mic]>l[x])mic=x;
			if(l[mac]<l[x])mac=x;
		}else{
			if(l[mid]>l[x])mid=x;
			if(l[mad]<l[x])mad=x;
		}
	}
}

Compilation message (stderr)

rail.cpp: In function 'void findLocation(int, int, int*, int*)':
rail.cpp:19:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1;i<p.size();i++){
              ~^~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 22 / 22
• Subtask 3: 0 / 26
• Subtask 4: 0 / 44