Submission #1080166

#	Time	Username	Problem	Language	Result	Execution time	Memory
1080166		Sir_Ahmed_Imran	Stations (IOI20_stations)	C++17	52.32 / 100	657 ms	1272 KiB

stations

                            ///~~~LOTA~~~///
//#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define append push_back
#define add insert
#define nl '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define all(x) (x).begin(),(x).end()
#define L0TA ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define terminator main
#define N 1000
int m;
vector<int> l;
vector<int> a[N];
void dfs(int v,int u){
    int r=1e9;
    for(auto& i:a[v]){
        if(i==u) continue;
        dfs(i,v);
        r=min(r,l[i]/1000);
    }
    l[v]=min(r,m)*1000+m;
    m++;
}
vector<int> label(int n,int k,vector<int> u,vector<int> v){
    l.clear();
    for(int i=0;i<n;i++){
        a[i].clear();
        l.append(0);
    }
    for(int i=m=0;i<n-1;i++){
        a[u[i]].append(v[i]);
        a[v[i]].append(u[i]);
    }
    dfs(0,-1);
    return l;
}
int find_next_station(int s,int t,vector<int> c){
    int l,r,p,q,x,y,z;
    l=s/1000;r=s%1000;
    p=t/1000;q=t%1000;
    for(auto& i:c){
        x=i/1000;
        y=i%1000;
        if(x<=l && r<=y) z=i;
        if(l<=x && y<=r && x<=p && q<=y)
            return i;
    }
    return z;
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:45:21: warning: 'z' may be used uninitialized in this function [-Wmaybe-uninitialized]
   45 |     int l,r,p,q,x,y,z;
      |                     ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 26.3244 / 61