Submission #432093

#	Time	Username	Problem	Language	Result	Execution time	Memory
432093		REALITYNB	Rail (IOI14_rail)	C++17	30 / 100	86 ms	504 KiB

rail

#include <bits/stdc++.h>
#include "rail.h"
using namespace std;
void findLocation(int n ,int first , int* loc , int* stype){
    loc[0]=first ;
    stype[0]=1;
    if(n==1) return ;
    vector<int> a(n) ;
    for(int i=0;i<n;i++) a[i]=getDistance(i,0) ;
    int mn = 1e9;
    for(int i=1;i<n;i++) mn=min(mn,a[i]) ;
    int second ;
    for(int i=1;i<n;i++) if(mn==a[i]) second=i;
    vector<int> b(n) ;
    stype[second]=2,loc[second]=first+mn;
    for(int i=0;i<n;i++) b[i]=getDistance(i,second);
    for(int i=0;i<n;i++){
        if(i==second||i==0) continue ;
        if(a[i]>b[i]){
            stype[i]=1;
            loc[i]=loc[second]-b[i] ;
        }
        else{
            stype[i]=2;
            loc[i]=loc[0]+a[i];
        }
    }
    return ;
}

Compilation message (stderr)

rail.cpp: In function 'void findLocation(int, int, int*, int*)':
rail.cpp:15:11: warning: 'second' may be used uninitialized in this function [-Wmaybe-uninitialized]
   15 |     stype[second]=2,loc[second]=first+mn;
      |           ^~~~~~

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