Submission #1251900

#	Time	Username	Problem	Language	Result	Execution time	Memory
1251900		tamzid	Finding Routers (IOI20_routers)	C++20	Compilation error	0 ms	0 KiB

routers

#include "routers.h"
#include <bits/stdc++.h>
using namespace std;

std::vector<int> find_routers(int l, int n, int q) {
  //   int idx = use_detector(0);
  //   std::vector<int> ans;
  //   for (int i = 0; i < n; i++) {
	// 	ans.push_back(0);
	// }
	// return ans;

  std::vector<int> ans;
  ans.push_back(0);
  int l = 0, r = l;
  while(l < r)
  {
    int m = (l + r) / 2;
    if(use_detector(m) == 0)
    {
      l = m + 1;
    }
    else
    {
      r = m - 1;
    }
  }
  ans.push_back((l - 1) * 2);
  return ans;
}

Compilation message (stderr)

routers.cpp: In function 'std::vector<int> find_routers(int, int, int)':
routers.cpp:15:7: error: declaration of 'int l' shadows a parameter
   15 |   int l = 0, r = l;
      |       ^
routers.cpp:5:35: note: 'int l' previously declared here
    5 | std::vector<int> find_routers(int l, int n, int q) {
      |                               ~~~~^