Submission #1054706

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054706		LittleOrange	Stations (IOI20_stations)	C++17	0 / 100	454 ms	684 KiB

stations

#include "stations.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
using ll = int;

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	std::vector<int> labels(n);
	for (int i = 0; i < n; i++) {
		labels[i] = i;
	}
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	s++;t++;
	ll lgs = __lg(s), lgt = __lg(t);
	if (lgs<lgt){
		ll x = s<<(lgt-lgs);
		if (t==x|((1<<(lgt-lgs))-1)){
			return (t>>(lgt-lgs-1))-1;
		}
	}
	return (s>>1)-1;
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:20:8: warning: suggest parentheses around comparison in operand of '|' [-Wparentheses]
   20 |   if (t==x|((1<<(lgt-lgs))-1)){
      |       ~^~~

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