Submission #1205732

#	Time	Username	Problem	Language	Result	Execution time	Memory
1205732		batsukh2006	Hack (APIO25_hack)	C++17	Compilation error	0 ms	0 KiB

hack

#include "hack.h"
#include <vector>
const int mxN=100000;
int hack(){
    vector<int> x;
    for(int i=0; i<mxN; i++) x.push_back(i);
    long long v=collisions(x);
    for(int i=1; i<=mxN; i++){
        long long f=mxN/i;
        long long a=f*(f-1)/2*i;
        a+=mxN%i*f;
        if(a==v) return i;
    }
}

Compilation message (stderr)

hack.cpp: In function 'int hack()':
hack.cpp:5:5: error: 'vector' was not declared in this scope
    5 |     vector<int> x;
      |     ^~~~~~
hack.cpp:5:5: note: suggested alternatives:
In file included from /usr/include/c++/11/vector:67,
                 from hack.h:1,
                 from hack.cpp:1:
/usr/include/c++/11/bits/stl_vector.h:389:11: note:   'std::vector'
  389 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
In file included from hack.h:1,
                 from hack.cpp:1:
/usr/include/c++/11/vector:86:13: note:   'std::pmr::vector'
   86 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
hack.cpp:5:12: error: expected primary-expression before 'int'
    5 |     vector<int> x;
      |            ^~~
hack.cpp:6:30: error: 'x' was not declared in this scope
    6 |     for(int i=0; i<mxN; i++) x.push_back(i);
      |                              ^
hack.cpp:7:28: error: 'x' was not declared in this scope
    7 |     long long v=collisions(x);
      |                            ^
hack.cpp:14:1: warning: control reaches end of non-void function [-Wreturn-type]
   14 | }
      | ^