Submission #728559

#	Time	Username	Problem	Language	Result	Execution time	Memory
728559		grogu	Thousands Islands (IOI22_islands)	C++17	Compilation error	0 ms	0 KiB

islands

#include "islands.h"
#define dbg(x) cerr<<#x<<": "<<x<<endl
#include <bits/stdc++.h>
#define ll int
#define pll pair<ll,ll>
#include <vector>
#include <variant>

using namespace std;
#define maxn 405
ll n,m;
vector<ll> g[maxn];
ll id[maxn][maxn];

variant<bool, vector<int>> find_journey(int N, int M, vector<int> U, vector<int> V) {
    return n&1;
    n = N;
    m = M;
    for(ll i = 0;i<m;i++){
        ll x = U[i],y = V[i];
        x++; y++;
        g[x].pb(y);
        g[y].pb(x);
        id[x][y] = i;
    }
    for(ll i = 0;i<(n-1)/2;i++){
        dfs()
    }
}

Compilation message (stderr)

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:16:13: error: could not convert '(n & 1)' from 'int' to 'std::variant<bool, std::vector<int, std::allocator<int> > >'
   16 |     return n&1;
      |            ~^~
      |             |
      |             int
islands.cpp:22:14: error: 'class std::vector<int>' has no member named 'pb'
   22 |         g[x].pb(y);
      |              ^~
islands.cpp:23:14: error: 'class std::vector<int>' has no member named 'pb'
   23 |         g[y].pb(x);
      |              ^~
islands.cpp:27:9: error: 'dfs' was not declared in this scope; did you mean 'ffs'?
   27 |         dfs()
      |         ^~~
      |         ffs