Submission #551543

#	Time	Username	Problem	Language	Result	Execution time	Memory
551543		krit3379	Rail (IOI14_rail)	C++17	100 / 100	89 ms	844 KiB

rail

#include<bits/stdc++.h>
using namespace std;
#include"rail.h"
#define N 5005

struct A{
    int x,id;
    bool operator<(const A& o)const{
        return x<o.x;
    }
};

A l,r;
vector<A> v;
map<int,int> mp;

void findLocation(int n, int first, int location[], int stype[]){
    int i,pos;
    location[0]=first;
    stype[0]=1;
    if(n==1)return ;
    l={first,0};
    mp[l.x]=1;
    for(i=1;i<n;i++)v.push_back({getDistance(0,i),i});
    sort(v.begin(),v.end());
    r={l.x+v[0].x,v[0].id};
    location[v[0].id]=r.x;
    stype[v[0].id]=2;
    mp[r.x]=2;
    for(i=1;i<v.size();i++){
        int xl,xr;
        xl=getDistance(v[i].id,l.id);
        xr=getDistance(v[i].id,r.id);
        pos=l.x+xl;
        int val=(pos+r.x-xr)/2;
        if((mp.count(val)&&mp[val]==1)||(!mp.count(val)&&val>first)){
            A temp={pos,v[i].id};
            location[v[i].id]=pos;
            stype[v[i].id]=2;
            r=max(r,temp);
            mp[pos]=2;
            continue;
        }
        pos=r.x-xr;
        A temp={pos,v[i].id};
        location[v[i].id]=pos;
        stype[v[i].id]=1;
        l=min(l,temp);
        mp[pos]=1;
    }
    return ;
}

Compilation message (stderr)

rail.cpp: In function 'void findLocation(int, int, int*, int*)':
rail.cpp:30:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<A>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for(i=1;i<v.size();i++){
      |             ~^~~~~~~~~

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