Submission #311356

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
311356	2020-10-10T01:07:03 Z	caoash	Regions (IOI09_regions)	C++14	Compilation error	0 ms	0 KB

regions

#include <bits/stdc++.h> 
using namespace std;

using ll = long long;

using vi = vector<int>;
using vl = vector<ll>;
#define pb push_back
#define rsz resize
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()

using pi = pair<int,int>;
#define f first
#define s second
#define mp make_pair

const int MX = 200005;
const int MOD = (int) (1e9 + 7);
const ll INF = (ll) 1e18;

namespace output {
  void pr(int x) {
    cout << x;
  }
  void pr(long x) {
    cout << x;
  }
  void pr(ll x) {
    cout << x;
  }
  void pr(unsigned x) {
    cout << x;
  }
  void pr(unsigned long x) {
    cout << x;
  }
  void pr(unsigned long long x) {
    cout << x;
  }
  void pr(float x) {
    cout << x;
  }
  void pr(double x) {
    cout << x;
  }
  void pr(long double x) {
    cout << x;
  }
  void pr(char x) {
    cout << x;
  }
  void pr(const char * x) {
    cout << x;
  }
  void pr(const string & x) {
    cout << x;
  }
  void pr(bool x) {
    pr(x ? "true" : "false");
  }

  template < class T1, class T2 > void pr(const pair < T1, T2 > & x);
  template < class T > void pr(const T & x);

  template < class T, class...Ts > void pr(const T & t,
    const Ts & ...ts) {
    pr(t);
    pr(ts...);
  }
  template < class T1, class T2 > void pr(const pair < T1, T2 > & x) {
    pr("{", x.f, ", ", x.s, "}");
  }
  template < class T > void pr(const T & x) {
    pr("{"); // const iterator needed for vector<bool>
    bool fst = 1;
    for (const auto & a: x) pr(!fst ? ", " : "", a), fst = 0;
    pr("}");
  }

  void ps() {
    pr("\n");
  } // print w/ spaces
  template < class T, class...Ts > void ps(const T & t,
    const Ts & ...ts) {
    pr(t);
    if (sizeof...(ts)) pr(" ");
    ps(ts...);
  }

  void pc() {
    cout << "]" << endl;
  } // debug w/ commas
  template < class T, class...Ts > void pc(const T & t,
    const Ts & ...ts) {
    pr(t);
    if (sizeof...(ts)) pr(", ");
    pc(ts...);
  }
  #define dbg(x...) pr("[", #x, "] = ["), pc(x);
}

#ifdef LOCAL
using namespace output;
#endif

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;

vi adj[MX];
int nr[MX];
int p[MX];
gp_hash_table<pi, int> ans;
map<int, int> vals[MX];

void mrg(map<int, int> &v1, map<int, int> &v2) {
    if (sz(v1) < sz(v2)) swap(v1, v2);
    for (auto x : v2) v1[x.f] += x.s;
    v2.clear();
}

void dfs(int v, int p) {
    vals[v][nr[v]]++; 
    for (int to : adj[v]) {
        if (to != p) {
            dfs(to, v);
            mrg(vals[v], vals[to]);
        }
    }
    for (auto x : vals[v]) ans[mp(nr[v], x.f)] += x.s;
    // dbg(v, vals[v]);
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, r, q; cin >> n >> r >> q;
    cin >> nr[0];
    for (int i = 1; i < n; i++) cin >> p[i] >> nr[i];
    for (int i = 1; i < n; i++) {
        // dbg(i, p[i]);
        // dbg(p[i] - 1, i);
        adj[p[i] - 1].pb(i);
    }
    dfs(0, -1);
    for (int i = 0; i < q; i++) {
        int qu, qv; cin >> qu >> qv;
        cout << ans[mp(qu, qv)] << endl;
    }
}

Compilation message

/tmp/cciFfwY6.o: In function `dfs(int, int)':
regions.cpp:(.text+0x5e2): undefined reference to `std::tr1::hash<std::pair<int, int> >::operator()(std::pair<int, int>) const'
regions.cpp:(.text+0x79f): undefined reference to `std::tr1::hash<std::pair<int, int> >::operator()(std::pair<int, int>) const'
/tmp/cciFfwY6.o: In function `__gnu_pbds::detail::gp_ht_map<std::pair<int, int>, int, std::tr1::hash<std::pair<int, int> >, std::equal_to<std::pair<int, int> >, std::allocator<char>, false, __gnu_pbds::direct_mask_range_hashing<unsigned long>, __gnu_pbds::linear_probe_fn<unsigned long>, __gnu_pbds::hash_standard_resize_policy<__gnu_pbds::hash_exponential_size_policy<unsigned long>, __gnu_pbds::hash_load_check_resize_trigger<false, unsigned long>, false, unsigned long> >::resize_imp(unsigned long)':
regions.cpp:(.text._ZN10__gnu_pbds6detail9gp_ht_mapISt4pairIiiEiNSt3tr14hashIS3_EESt8equal_toIS3_ESaIcELb0ENS_25direct_mask_range_hashingImEENS_15linear_probe_fnImEENS_27hash_standard_resize_policyINS_28hash_exponential_size_policyImEENS_30hash_load_check_resize_triggerILb0EmEELb0EmEEE10resize_impEm[_ZN10__gnu_pbds6detail9gp_ht_mapISt4pairIiiEiNSt3tr14hashIS3_EESt8equal_toIS3_ESaIcELb0ENS_25direct_mask_range_hashingImEENS_15linear_probe_fnImEENS_27hash_standard_resize_policyINS_28hash_exponential_size_policyImEENS_30hash_load_check_resize_triggerILb0EmEELb0EmEEE10resize_impEm]+0x106): undefined reference to `std::tr1::hash<std::pair<int, int> >::operator()(std::pair<int, int>) const'
/tmp/cciFfwY6.o: In function `main':
regions.cpp:(.text.startup+0x16f): undefined reference to `std::tr1::hash<std::pair<int, int> >::operator()(std::pair<int, int>) const'
regions.cpp:(.text.startup+0x2c1): undefined reference to `std::tr1::hash<std::pair<int, int> >::operator()(std::pair<int, int>) const'
collect2: error: ld returned 1 exit status