Submission #600223

#	Time	Username	Problem	Language	Result	Execution time	Memory
600223		_Avocado_	Rice Hub (IOI11_ricehub)	C++14	Compilation error	0 ms	0 KiB

ricehub

//#include <bits/stdc++.h>
#include "ricehub.h"
//#define int int64_t
using namespace std;

int bsearch(int n, int len, vector<int>&fred, vector<int>&prefix, int budget){
	int l = -1;
	int r = n+1;
	
	while(r-l > 1){
		int m = (r+l)/2;
		int ans = 1e9;
		int mid = m/2+1;
		for(int i = m; i<=n; ++i){
			int hub = fred[mid];
			int one = ((m/2) * hub)-(prefix[mid-1]-prefix[i-m]);
			int two = (prefix[i]-prefix[mid-(1-m%2)]) - ((m/2)*hub);
			++mid;
			ans = min(ans, one+two);
		}
		if(ans <= budget) l = m;
		else r = m;

	}
	return l;
}
			

int besthub(int n, int len, vector<int>&x, int budget){
	vector<int>prefix(n+1);
	for(int i = 1; i<=n; ++i){
		prefix[i] = prefix[i-1] + x[i-1];
	}
	
	vector<int>fred;
	fred.push_back(0);
	for(auto u: x) fred.push_back(u);
	
	return bsearch(n, len, fred, prefix, budget);
}

Compilation message (stderr)

ricehub.cpp:6:29: error: 'vector' has not been declared
    6 | int bsearch(int n, int len, vector<int>&fred, vector<int>&prefix, int budget){
      |                             ^~~~~~
ricehub.cpp:6:35: error: expected ',' or '...' before '<' token
    6 | int bsearch(int n, int len, vector<int>&fred, vector<int>&prefix, int budget){
      |                                   ^
ricehub.cpp: In function 'int bsearch(int, int, int)':
ricehub.cpp:15:14: error: 'fred' was not declared in this scope
   15 |    int hub = fred[mid];
      |              ^~~~
ricehub.cpp:16:29: error: 'prefix' was not declared in this scope
   16 |    int one = ((m/2) * hub)-(prefix[mid-1]-prefix[i-m]);
      |                             ^~~~~~
ricehub.cpp:19:10: error: 'min' was not declared in this scope; did you mean 'mid'?
   19 |    ans = min(ans, one+two);
      |          ^~~
      |          mid
ricehub.cpp:21:13: error: 'budget' was not declared in this scope
   21 |   if(ans <= budget) l = m;
      |             ^~~~~~
ricehub.cpp: At global scope:
ricehub.cpp:29:29: error: 'vector' has not been declared
   29 | int besthub(int n, int len, vector<int>&x, int budget){
      |                             ^~~~~~
ricehub.cpp:29:35: error: expected ',' or '...' before '<' token
   29 | int besthub(int n, int len, vector<int>&x, int budget){
      |                                   ^
ricehub.cpp: In function 'int besthub(int, int, int)':
ricehub.cpp:30:2: error: 'vector' was not declared in this scope
   30 |  vector<int>prefix(n+1);
      |  ^~~~~~
ricehub.cpp:3:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
    2 | #include "ricehub.h"
  +++ |+#include <vector>
    3 | //#define int int64_t
ricehub.cpp:30:9: error: expected primary-expression before 'int'
   30 |  vector<int>prefix(n+1);
      |         ^~~
ricehub.cpp:32:3: error: 'prefix' was not declared in this scope
   32 |   prefix[i] = prefix[i-1] + x[i-1];
      |   ^~~~~~
ricehub.cpp:32:29: error: 'x' was not declared in this scope
   32 |   prefix[i] = prefix[i-1] + x[i-1];
      |                             ^
ricehub.cpp:35:9: error: expected primary-expression before 'int'
   35 |  vector<int>fred;
      |         ^~~
ricehub.cpp:36:2: error: 'fred' was not declared in this scope
   36 |  fred.push_back(0);
      |  ^~~~
ricehub.cpp:37:14: error: 'x' was not declared in this scope
   37 |  for(auto u: x) fred.push_back(u);
      |              ^
ricehub.cpp:39:31: error: 'prefix' was not declared in this scope
   39 |  return bsearch(n, len, fred, prefix, budget);
      |                               ^~~~~~
ricehub.cpp:39:39: error: 'budget' was not declared in this scope
   39 |  return bsearch(n, len, fred, prefix, budget);
      |                                       ^~~~~~