Submission #429178

#	Time	Username	Problem	Language	Result	Execution time	Memory
429178		chirathnirodha	Finding Routers (IOI20_routers)	C++17	60 / 100	3 ms	296 KiB

routers

//Coded by Chirath Nirodha
#include<bits/stdc++.h>
using namespace std;
#include "routers.h"
#define MP make_pair
#define PB push_back
#define F first
#define S second
typedef long long ll;

vector<int> find_routers(int l, int n, int q) {
    vector<int> ans;
    if(n==2){
      ll a=0,b=l;
      while(b-a>1){
        ll m=(a+b)/2;
        int idx=use_detector(m);
        if(idx==0)a=m;
        else b=m;
      }
      ans.PB(0);
      ans.PB(2*a);
    }
    else{
      int cur=1;
      ans.PB(0);
      for(int i=1;i<=l;i++){
        int idx=use_detector(i);
        if(idx==cur){
          ans.PB(ans[ans.size()-1]+(i-1-ans[ans.size()-1])*2);
          cur++;
        }
        if(ans.size()==n)break;
      }
    }
	return ans;
}

Compilation message (stderr)

routers.cpp: In function 'std::vector<int> find_routers(int, int, int)':
routers.cpp:33:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |         if(ans.size()==n)break;
      |            ~~~~~~~~~~^~~

• Subtask 1: 16 / 16
• Subtask 2: 21 / 21
• Subtask 3: 23 / 23
• Subtask 4: 0 / 40