Submission #1016808

#	Time	Username	Problem	Language	Result	Execution time	Memory
1016808		NValchanov	Magic Show (APIO24_show)	C++17	Compilation error	0 ms	0 KiB

Alice

#include <bits/stdc++.h>
#include "Alice.h"

#define endl '\n'

using namespace std;

typedef long long ll;

vector < pair < int, int > > Alice()
{
	int n = setN(5000);
  	vector < pair < int, int > > edges;
  	for(int i = 1; i < n; i++)
    {
		edges.push_back({x % i + 1, i});
    }
  	return edges;
}

Bob

#include <bits/stdc++.h>
#include "Bob.h"

#define endl '\n'

using namespace std;

typedef long long ll;

/// EXTENDED GCD :(

pair < ll, pair < ll, ll > > extgcd(ll a, ll b)
{
    if(b == 0)
        return {a, {1, 0}};

    pair < ll, pair < ll, ll > > g = extgcd(b, a % b);

    ll d = g.first;
    ll x = g.second.first;
    ll y = g.second.second;

    ll x1 = y;
    ll y1 = x - y * (a / b);

    return {d, {x1, y1}};
}

ll Bob(vector < pair < int, int > > edges)
{

    /// CRT

    ll l = 0;
    ll ans = 0;

    for(pair < int, int > e : edges)
    {
        ll u = e.first;
        ll v = e.second;

        if(u > v)
            swap(u, v);

        u--;
        v--;

        if(ans == 0)
        {
            ans = u;
            l = v;
            continue;
        }

        pair < ll, pair < ll , ll > > g = extgcd(l, v);

        ll d = g.first;
        ll x = g.second.first;
        ll y = g.second.second;

        ans = ans + (x * (u - ans) / d) % (v / d) * l;
        l = l * v / d;
        ans = (ans + l) % l;

        if(l >= 1e18)
            break;
    }

    return ans;
}

Compilation message (stderr)

Alice.cpp: In function 'std::vector<std::pair<int, int> > Alice()':
Alice.cpp:16:20: error: 'x' was not declared in this scope
   16 |   edges.push_back({x % i + 1, i});
      |                    ^
Alice.cpp:16:33: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(<brace-enclosed initializer list>)'
   16 |   edges.push_back({x % i + 1, i});
      |                                 ^
In file included from /usr/include/c++/10/vector:67,
                 from /usr/include/c++/10/functional:62,
                 from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/10/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from Alice.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:1187:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1187 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1187:35: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const std::pair<int, int>&'}
 1187 |       push_back(const value_type& __x)
      |                 ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:1203:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1203 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1203:30: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<std::pair<int, int> >::value_type&&' {aka 'std::pair<int, int>&&'}
 1203 |       push_back(value_type&& __x)
      |                 ~~~~~~~~~~~~~^~~

Bob.cpp: In function 'll Bob(std::vector<std::pair<int, int> >)':
Bob.cpp:59:12: warning: unused variable 'y' [-Wunused-variable]
   59 |         ll y = g.second.second;
      |            ^