Submission #1251926

#	Time	Username	Problem	Language	Result	Execution time	Memory
1251926		aritro_	Finding Routers (IOI20_routers)	C++20	Compilation error	0 ms	0 KiB

routers

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

typedef long long ll;
#define int ll
#define endl '\n'
#define pb push_back
#define ff first
#define ss second
#define all(a) a.begin(),a.end()

const int MOD=1000000007;

#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (a*(b/gcd(a,b)))

#define fraction(x); cout.unsetf(ios::floatfield); cout.precision(x); cout.setf(ios::fixed,ios::floatfield);
#define file(); freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);

vector<int> find_routers(int mx, int n, int q){
    //call with: use_detector(x);
    //solve for: 2 routers
    /*int l=0,r=mx,mid;
    int ans=0;
    while(l<=r){
        mid=(l+r)/2;
        int tem=use_detector(mid);
        if(tem==0) ans=mid,l=mid+1;
        else r=mid-1;
    }*/

    //cout<<"ANS: "<<(((ans+3)/2)+ans)+1<<endl;
    //return {0,(((ans+1)/2)+ans)+1};
    for(int i=0;i<=l;i++){
        int res=use_detector(i);
        if(res) return {0,(i-1)*2};
    }
}

Compilation message (stderr)

routers.cpp: In function 'std::vector<long long int> find_routers(ll, ll, ll)':
routers.cpp:35:20: error: 'l' was not declared in this scope
   35 |     for(int i=0;i<=l;i++){
      |                    ^
routers.cpp:35:13: warning: control reaches end of non-void function [-Wreturn-type]
   35 |     for(int i=0;i<=l;i++){
      |             ^