Submission #1267378

#	Time	Username	Problem	Language	Result	Execution time	Memory
1267378		Faggi	Radio Towers (IOI22_towers)	C++20	Compilation error	0 ms	0 KiB

towers

#include <bits/stdc++.h>
#define ll long long
using namespace std;


ll n;
vector<int>h;
vector<ll>v;
void init(int N, std::vector<int> H) {
    h=H;
    v.resize(N,0);
    n=N;
    ll i;
    for(i=1; i<N; i++)
    {
        v[i]=v[i-1];
        if(i+1<N&&H[i]<H[i+1]&&H[i]<H[i-1])
            v[i]++;
    }
}
bool in=0;
void ini(ll D)
{
    in=1;
    ll i;
    for(i=1; i<N; i++)
    {
        v[i]=v[i-1];
        if(i+1<N&&H[i]<=H[i+1]-D&&H[i]<=H[i-1]-D)
            v[i]++;
    }
}
int max_towers(int L, int R, int D) {
    if(in==0)
        ini(D);
    if(L==R)
        return 1;
    int ans=v[R-1]-v[L];
    if(h[L]<=h[L+1]-D)
        ans++;
    if(h[R]<=h[R-1]-D)
        ans++;
    return ans;
}

Compilation message (stderr)

towers.cpp: In function 'void ini(long long int)':
towers.cpp:27:16: error: 'N' was not declared in this scope
   27 |     for(i=1; i<N; i++)
      |                ^
towers.cpp:30:19: error: 'H' was not declared in this scope
   30 |         if(i+1<N&&H[i]<=H[i+1]-D&&H[i]<=H[i-1]-D)
      |                   ^