Submission #656794

#	Time	Username	Problem	Language	Result	Execution time	Memory
656794		ktkerem	A Difficult(y) Choice (BOI21_books)	C++17	Compilation error	0 ms	0 KiB

books

#include<bits/stdc++.h>
#include "books.h"
typedef long long ll;
typedef std::pair<ll , ll> llll;
typedef std::string str;
#define debug std::cout << "debug" << std::endl
#define pb push_back
ll fun(ll x){
	if(kp[x] == -1){
		kp[x] = skim(x);
	}
	return kp[x];
}
void solve(int n , int m ,ll a , int s){
	ll l = 1 , r = n;
	ll kp[n + 1];
	memset(kp , -1 , sizeof(kp));
	while(r > l){
		ll md = (l+r)/2;
		ll z = fun(md);
		kp[md] = z;
		if(z>a){
			r = md;
		}
		else{
			l=md+1;
		}
	}
	if(m > l){
		impossible();
		return;
	}
	ll tot = 0;
	for(ll i = 1;m>i;i++){
		tot+=fun(i);
	}
	if(tot + fun(l) >= a && 2*a >= tot + fun(l)){
		std::vector<int> v;
		for(ll i = 1;m>i;i++){
			v.pb(i);
		}
		v.pb(l);
		answer(v);
		return;
	}
	if(m >= l){
		impossible();
		return;
	}
	tot = 0;
	for(ll i = 0;m>=i;i++){
		for(ll j =1;i>=j;j++){
			tot+=fun(j);
		}
		for(ll j = l - (m - i);l>j;j++){
			tot+=fun(j);
		}
		if(tot >= a && 2*a >= tot){
			std::vector<int> v;
			for(ll j =1;i>=j;j++){
				v.pb(j);
			}
			for(ll j = l - (m - i);l>j;j++){
				v.pb(j);
			}
			answer(j);
			return;
		}
		tot = 0;
	}
	impossible();
}
/*int main(){
	#ifndef ONLINE_JUDGE
		freopen("in.txt","r",stdin);
		freopen("out.txt","w",stdout);
	#endif
	ll t = 1;std::cin >> t;
	while(t--){
		solve();
	}
	return 0;
}*/

Compilation message (stderr)

books.cpp: In function 'll fun(ll)':
books.cpp:9:5: error: 'kp' was not declared in this scope
    9 |  if(kp[x] == -1){
      |     ^~
books.cpp:12:9: error: 'kp' was not declared in this scope
   12 |  return kp[x];
      |         ^~
books.cpp: In function 'void solve(int, int, ll, int)':
books.cpp:66:11: error: 'j' was not declared in this scope
   66 |    answer(j);
      |           ^