Submission #409287

#	Time	Username	Problem	Language	Result	Execution time	Memory
409287		MDario	Rail (IOI14_rail)	C++11	0 / 100	89 ms	504 KiB

rail

#include "rail.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define F first
#define S second
void findLocation(int N, int first, int location[], int stype[]){
    for(int i=0; i<N; i++){
        stype[i]=0;
    }
    location[0]=first;
    stype[0]=1;
    if(N==1)return;
    int a[N];
    a[0]=0;
    vector<pair<ll, ll>> v, v1;
    for(int i=0; i<N; i++){
        if(stype[i]!=0){
            a[i]=getDistance(0, i);
            v.push_back({a[i], i});
        }
    }
    sort(v.begin(), v.end());
    int l=0, r=v[0].S, dl, dr;
    location[r]=first+v[0].F;
    stype[r]=2;
    for(int i=1; i<v.size(); i++){
        dl=getDistance(l, v[i].S);
        dr=getDistance(r, v[i].S);
        if(dl<dr){
            stype[v[i].S]=2;
            location[v[i].S]=location[l]+dl;
            if(dl>=location[r]-location[l]){
                r=v[i].S;
            }
        }
        else{
            stype[v[i].S]=1;
            location[v[i].S]=location[r]-dr;
            if(dr>=location[r]-location[l]){
                l=v[i].S;
            }
        }
    }
    return ;
}

Compilation message (stderr)

rail.cpp: In function 'void findLocation(int, int, int*, int*)':
rail.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i=1; i<v.size(); i++){
      |                  ~^~~~~~~~~

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