Submission #740076

#	Time	Username	Problem	Language	Result	Execution time	Memory
740076		vjudge1	Fountain Parks (IOI21_parks)	C++17	Compilation error	0 ms	0 KiB

parks

#include "parks.h"
const int maxn = 2e5 + 100;
int ord[maxn];

int construct_roads(vector<int>x, vector<int>y) {
    if (x.size() == 1) {
	build({}, {}, {}, {});
        return 1;
    }
    for(int i=0; i<n; i++){
    	ord[i] = i;
	}
	sort(ord, ord+n, [](int a, int b){
		return y[a] < y[b];
	});
	bool ok = 1;
	vector<int>u, v, a, b;
	for(int i=1; i<n; i++){
		if(y[i]-y[i-1] != 2) ok = 0;
		u.push_back(ord[i-1]);
		v.push_back(ord[i]);
		a.push_back(1);
		b.push_back(y[ord[i]]-1);
	}
	if(ok) build(u, v, a, b);
    return ok;
}

Compilation message (stderr)

parks.cpp:5:21: error: 'int construct_roads' redeclared as different kind of entity
    5 | int construct_roads(vector<int>x, vector<int>y) {
      |                     ^~~~~~
In file included from parks.cpp:1:
parks.h:3:5: note: previous declaration 'int construct_roads(std::vector<int>, std::vector<int>)'
    3 | int construct_roads(std::vector<int> x, std::vector<int> y);
      |     ^~~~~~~~~~~~~~~
parks.cpp:5:21: error: 'vector' was not declared in this scope
    5 | int construct_roads(vector<int>x, vector<int>y) {
      |                     ^~~~~~
parks.cpp:5:21: note: suggested alternatives:
In file included from /usr/include/c++/10/vector:67,
                 from parks.h:1,
                 from parks.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:389:11: note:   'std::vector'
  389 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
In file included from parks.h:1,
                 from parks.cpp:1:
/usr/include/c++/10/vector:86:13: note:   'std::pmr::vector'
   86 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
parks.cpp:5:28: error: expected primary-expression before 'int'
    5 | int construct_roads(vector<int>x, vector<int>y) {
      |                            ^~~
parks.cpp:5:35: error: 'vector' was not declared in this scope
    5 | int construct_roads(vector<int>x, vector<int>y) {
      |                                   ^~~~~~
parks.cpp:5:35: note: suggested alternatives:
In file included from /usr/include/c++/10/vector:67,
                 from parks.h:1,
                 from parks.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:389:11: note:   'std::vector'
  389 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
In file included from parks.h:1,
                 from parks.cpp:1:
/usr/include/c++/10/vector:86:13: note:   'std::pmr::vector'
   86 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
parks.cpp:5:42: error: expected primary-expression before 'int'
    5 | int construct_roads(vector<int>x, vector<int>y) {
      |                                          ^~~