Submission #778568

#	Time	Username	Problem	Language	Result	Execution time	Memory
778568		khshg	The Big Prize (IOI17_prize)	C++14	Compilation error	0 ms	0 KiB

prize

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

vector<int> memo;
vector<int> K(int i) {
	if(memo[i][0] != -1) return memo[i];
	return ask(i);
}

int find_best(int N) {
	memo.resize(N, {-1, -1});
	int i = 0;
	int mx = 0;
	for(; i < 473; ++i) {
		vector<int> e = K(i);
		int sum = e[0] + e[1];
		if(!sum) return i;
		mx = max(mx, e[0] + e[1]);
	}
	while(true) {
		vector<int> e = K(i);
		int sum = e[0] + e[1];
		if(!sum) return i;
		if(sum != mx) { ++i; continue; }
		int tl = i + 1, tr = N;
		while(tl < tr) {
			int tm = (tl + tr) / 2;
			vector<int> E = ask(tm);
			if(e == E) {
				tl = tm + 1;
			} else {
				tr = tm;
			}
		}
		i = tr;
	}
}

Compilation message (stderr)

prize.cpp: In function 'std::vector<int> K(int)':
prize.cpp:7:12: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}[int]' for array subscript
    7 |  if(memo[i][0] != -1) return memo[i];
      |            ^
prize.cpp:7:36: error: could not convert 'memo.std::vector<int>::operator[](((std::vector<int>::size_type)i))' from '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} to 'std::vector<int>'
    7 |  if(memo[i][0] != -1) return memo[i];
      |                                    ^
      |                                    |
      |                                    __gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}
prize.cpp: In function 'int find_best(int)':
prize.cpp:12:25: error: no matching function for call to 'std::vector<int>::resize(int&, <brace-enclosed initializer list>)'
   12 |  memo.resize(N, {-1, -1});
      |                         ^
In file included from /usr/include/c++/10/vector:67,
                 from prize.h:1,
                 from prize.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:937:7: note: candidate: 'void std::vector<_Tp, _Alloc>::resize(std::vector<_Tp, _Alloc>::size_type) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
  937 |       resize(size_type __new_size)
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:937:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/10/bits/stl_vector.h:957:7: note: candidate: 'void std::vector<_Tp, _Alloc>::resize(std::vector<_Tp, _Alloc>::size_type, const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::value_type = int]'
  957 |       resize(size_type __new_size, const value_type& __x)
      |       ^~~~~~
/usr/include/c++/10/bits/stl_vector.h:957:54: note:   no known conversion for argument 2 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const int&'}
  957 |       resize(size_type __new_size, const value_type& __x)
      |                                    ~~~~~~~~~~~~~~~~~~^~~