Submission #1312251

#	Time	Username	Problem	Language	Result	Execution time	Memory
1312251		azamurai	Magic Show (APIO24_show)	C++20	Compilation error	0 ms	0 KiB

Alice

#include <vector>
#include "Alice.h"

// you may define some global variables, but it does not work if you try to transfer any information from function Alice() to function Bob() through these variables.
// you had better not use the same global variables in function Alice() and in function Bob().

std::vector<std::pair<int,int>> Alice(){
	long long x = setN(5000);
	vector <pair<int,int>> edges;
	for (int i = 1; i <= 5000; i++) {
		if (i == x) continue;
		edges.push_back({i, x});
	}
	return edges;
}

Bob

#include <vector>
#include "Bob.h"

// you may define some global variables, but it does not work if you try to transfer any information from function Alice() to function Bob() through these variables.
// you had better not use the same global variables in function Alice() and in function Bob().

long long Bob(std::vector<std::pair<int,int>> V){
	map <int,int> cnt;
	for (int i = 0; i < Sz(V); i++) {
		int u = V[i].first, v = V[i].second;
		cnt[u]++; cnt[v]++;
	}
	long long ans = 0;
	for (auto to : cnt) {
		if (to.second > 1) ans = to.first;
	}
	return ans;
}

Compilation message (stderr)

# 1번째 컴파일 단계

Alice.cpp: In function 'std::vector<std::pair<int, int> > Alice()':
Alice.cpp:9:17: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
    9 |         vector <pair<int,int>> edges;
      |                 ^~~~
      |                 std::pair
In file included from /usr/include/c++/13/bits/stl_algobase.h:64,
                 from /usr/include/c++/13/vector:62,
                 from Alice.cpp:1:
/usr/include/c++/13/bits/stl_pair.h:187:12: note: 'std::pair' declared here
  187 |     struct pair
      |            ^~~~
Alice.cpp:9:9: error: 'vector' was not declared in this scope
    9 |         vector <pair<int,int>> edges;
      |         ^~~~~~
Alice.cpp:9:9: note: suggested alternatives:
In file included from /usr/include/c++/13/vector:66:
/usr/include/c++/13/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/13/vector:86:13: note:   'std::pmr::vector'
   86 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
Alice.cpp:9:22: error: expected primary-expression before 'int'
    9 |         vector <pair<int,int>> edges;
      |                      ^~~
Alice.cpp:12:17: error: 'edges' was not declared in this scope
   12 |                 edges.push_back({i, x});
      |                 ^~~~~
Alice.cpp:14:16: error: 'edges' was not declared in this scope
   14 |         return edges;
      |                ^~~~~