| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1182324 | PagodePaiva | Thousands Islands (IOI22_islands) | C++20 | Compilation error | 0 ms | 0 KiB |
#include "islands.h"
#include<bits/stdc++.h>
#include <variant>
#include <vector>
const int N = 100010;
vector <pair <int, int>> g[N];
std::variant<bool, std::vector<int>> find_journey(
int N, int M, std::vector<int> U, std::vector<int> V) {
for(int i = 0;i < M;i++){
g[U[i]].push_back({V[i], i});
}
if(g[0].size() < 2) return false;
if(g[1].size() < 1) return false;
int a = g[0][0].second, b = g[0][1].second, c = g[1][0].second;
return {a, c, b, a, c, b};
/*
if (N == 4) {
return std::vector<int>({0, 1, 2, 4, 0, 3, 2, 1, 4, 3});
}
return false;
*/
}
Compilation message (stderr)
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:9: error: 'pair' was not declared in this scope; did you mean 'std::pair'?
7 | vector <pair <int, int>> g[N];
| ^~~~
| std::pair
In file included from /usr/include/c++/11/utility:70,
from /usr/include/c++/11/variant:37,
from islands.h:1,
from islands.cpp:1:
/usr/include/c++/11/bits/stl_pair.h:211:12: note: 'std::pair' declared here
211 | struct pair
| ^~~~
islands.cpp:7:1: error: 'vector' does not name a type
7 | vector <pair <int, int>> g[N];
| ^~~~~~
islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:12:5: error: 'g' was not declared in this scope
12 | g[U[i]].push_back({V[i], i});
| ^
islands.cpp:14:6: error: 'g' was not declared in this scope
14 | if(g[0].size() < 2) return false;
| ^
islands.cpp:15:6: error: 'g' was not declared in this scope
15 | if(g[1].size() < 1) return false;
| ^
islands.cpp:16:11: error: 'g' was not declared in this scope
16 | int a = g[0][0].second, b = g[0][1].second, c = g[1][0].second;
| ^
islands.cpp:17:14: error: 'c' was not declared in this scope
17 | return {a, c, b, a, c, b};
| ^
islands.cpp:17:17: error: 'b' was not declared in this scope
17 | return {a, c, b, a, c, b};
| ^
islands.cpp:17:27: error: could not convert '{a, <expression error>, <expression error>, a, c, b}' from '<brace-enclosed initializer list>' to 'std::variant<bool, std::vector<int, std::allocator<int> > >'
17 | return {a, c, b, a, c, b};
| ^
| |
| <brace-enclosed initializer list>