Submission #241426

#	Time	Username	Problem	Language	Result	Execution time	Memory
241426		kartel	Mag (COCI16_mag)	C++14	Compilation error	0 ms	0 KiB

mag

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-O3")
#define F first
#define S second
#define pb push_back
#define N +200500
#define M ll(1e9 + 7)
#define sz(x) (int)x.size()
#define re return
#define oo ll(1e9)
#define el '\n'
#define pii pair <int, int>
#define err ld(1e-9)
#define last(x) x.back()
#define all(x) (x.begin(), x.end())
using namespace std;
//using namespace __gnu_pbds;
//typedef tree <int, null_type, less_equal <int> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef long double ld;

ll f[N], ans, i, n, u, v, a[N];
vector <ll> g[N];

void dfs(ll v, ll pr)
{
    f[v] = (a[v] == 1) ? 1 : -1e9;

    for (auto u : g[v])
    {
        if (u == pr) continue;

        dsf(u, v);

        f[v] = max(f[v], f[v] + f[u]);
    }
}

int main()
{
    srand(time(0));
    ios_base::sync_with_stdio(0);
    iostream::sync_with_stdio(0);
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);

//    in("input.txt");
//    out("output.txt");

    cin >> n;
    for (i = 1; i < n; i++)
    {
        cin >> u >> v;
        g[v].pb(u);
        g[u].pb(v);
    }
    for (i = 1; i <= n; i++) cin >> a[i];

    dfs(1, -1);

    ans = 1;
    for (i = 1; i <= n; i++) ans = max(ans, f[i]);

    cout << "1/" << ans;
}

//
//00000
//00110
//00111
//00011
//00000

Compilation message (stderr)

mag.cpp: In function 'void dfs(ll, ll)':
mag.cpp:39:9: error: 'dsf' was not declared in this scope
         dsf(u, v);
         ^~~