Submission #546976

#	Time	Username	Problem	Language	Result	Execution time	Memory
546976		OttoTheDino	File Paths (BOI15_fil)	C++17	Compilation error	0 ms	0 KiB

fil

    #include <bits/stdc++.h>
    using namespace std;
     
    #define rep(i,s,e)                  for (ll i = s; i <= e; ++i)
    #define rrep(i,s,e)                 for (ll i = s; i >= e; --i)
    #define pb                          push_back
    #define pf                          push_front
    #define fi                          first
    #define se                          second
    #define all(a)                      a.begin(), a.end()
    #define SZ(a)                       (ll)a.size()
    typedef long long ll;
    typedef pair<ll, ll> ii;
    typedef vector<ii> vii;
    typedef vector<ll> vi;
    typedef vector<double> vd;
    typedef vector<string> vs;
    typedef vector<ll> vll;
     
    const ll mx = 3e3;
    vi adj[mx+1], files[mx+1];
    ll cost[mx+1], costf[mx+1], ans[mx+1], s, k, p[mx+1];
    unordered_map<ll,ll> cnt, spec;
     
    void dfs3 (ll u, ll cur){
      if (cur>1e6) return;
        spec[cur] = 1;
        for (ll v : adj[u]) {
            dfs3 (v, cur + cost[v]);
        }
    }
     
    void dfs2 (ll u, ll cur, ll d) 
      if (cur>1e6) return;
        cnt[cur] += d;
        for (ll v : adj[u]) dfs2 (v, cur+cost[v], d);
    }
     
    void dfs (ll u, ll cur) {
      if (cur>1e6) return;
        dfs2 (u, 0, 1);
        for (ll v : adj[u]) dfs (v, cur + cost[v]);
        for (ll v : files[u]) {
            ll x = k - cur - costf[v];
            if (x==0) ans[v] = 1;
            for (ll i = 1; i*i <= x; ++i) {
                if (x%i==0) {
                    if (cnt[i-s]) ans[v] = 1;
                    if (cnt[x/i-s]) ans[v] = 1;
                }
            }
            ll go = u, cur2 = 0;
            while (go>=0) {
                if (spec[k-costf[v]-cur2-s]) ans[v] = 1;
                cur2 += cost[go];
                go = p[go];
            }
        }
        dfs2 (u, 0, -1);
    }
     
    int main() {
        ios::sync_with_stdio(0);
        cin.tie(0);
     
        ll n, m; cin >> n >> m >> k >> s;
        ++s;
     
        p[0] = -1;
     
        rep (i,1,n) {
            cin >> p[i] >> cost[i];
            ++cost[i];
            adj[p[i]].pb(i);
        }
        rep (i,1,m) {
            ll pr; cin >> pr >> costf[i];
            ++costf[i];
            files[pr].pb(i);
        }
      dfs3(0,0);
        dfs (0,0);
        rep (i,1,m) cout << (ans[i]?"YES":"NO") << "\n";
     
        return 0;
    }

Compilation message (stderr)

fil.cpp:34:7: error: expected initializer before 'if'
   34 |       if (cur>1e6) return;
      |       ^~
fil.cpp:35:9: error: 'cnt' does not name a type
   35 |         cnt[cur] += d;
      |         ^~~
fil.cpp:36:9: error: expected unqualified-id before 'for'
   36 |         for (ll v : adj[u]) dfs2 (v, cur+cost[v], d);
      |         ^~~
fil.cpp:37:5: error: expected declaration before '}' token
   37 |     }
      |     ^
fil.cpp: In function 'void dfs(ll, ll)':
fil.cpp:41:9: error: 'dfs2' was not declared in this scope; did you mean 'dfs'?
   41 |         dfs2 (u, 0, 1);
      |         ^~~~
      |         dfs