Submission #52723

# Submission time Handle Problem Language Result Execution time Memory
52723 2018-06-26T12:57:20 Z aquablitz11 Regions (IOI09_regions) C++14
65 / 100
7485 ms 40696 KB
// headers
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
// types
template<class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
using dbl = double;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pli = pair<ll, int>;
using piipi = pair<pii, int>;
using pipii = pair<int, pii>;
using plpii = pair<ll, pii>;
using ppii = pair<pii, pii>;
// loops
#define forx(i, x, y) for (int i = (x); i <= (y); ++i)
#define forn(i, n) for (int i = 0; i < (n); ++i)
#define for1(i, n) for (int i = 1; i <= (n); ++i)
#define rofx(i, x, y) for (int i = x; i >= y; --i)
#define rofn(i, n) for (int i = n-1; i >= 0; --i)
#define rof1(i, n) for (int i = n; i >= 1; --i)
#define fora(x, v) for (auto x : v)
// define shortcuts
#define all(x) begin(x), end(x)
#define pb push_back
#define eb emplace_back
#define F first
#define S second
#define X first
#define Y second
#define MP make_pair
#define MT make_tuple
// functions
template<class T> inline bool hasbit(T x, int i) { return x&(1<<i); }
template<class T> inline T togbit(T x, int i) { return x|(1<<i); }
template<class T> inline T setbit(T x, int i) { return x|(1<<i); }
template<class T> inline T rembit(T x, int i) { return x&~(1<<i); }
template<class T> inline bool setmax(T &a, const T &b) { return b > a ? a = b, true : false; }
template<class T> inline bool setmin(T &a, const T &b) { return b < a ? a = b, true : false; }
template<class T> int compress(vector<T> &v) { sort(all(v)); v.resize(unique(all(v))-v.begin()); return v.size(); }
// read functions
int read_int() { int x; scanf("%d", &x); return x; }
ll read_ll() { ll x; scanf("%" SCNd64, &x); return x; }
ull read_ull() { ull x; scanf("%" SCNu64, &x); return x; }
dbl read_dbl() { dbl x; scanf("%lf", &x); return x; }
void _R(int &x) { x = read_int(); }
void _R(ll &x) { x = read_ll(); }
void _R(dbl &x) { x = read_dbl(); }
void R() {}
template<class T, class... U> void R(T &head, U &... tail) { _R(head); R(tail...); }
// print functions
template<class T> void _W(const T &x) { cout << x; }
void _W(const int &x) { printf("%d", x); }
void _W(const ll &x) { printf("%" PRId64, x); }
void _W(const ull &x) { printf("%" PRIu64, x); }
void _W(const double &x) { printf("%.16f", x); }
void _W(const char &x) { putchar(x); }
void _W(const char *x) { printf("%s", x); }
template<class T> void _W(const vector<T> &x) { for (auto i = x.begin(); i != x.end(); _W(*i++)) if (i != x.cbegin()) putchar(' '); }
void W() {}
template<class T, class... U> void W(const T &head, const U &... tail) { _W(head); putchar(sizeof...(tail) ? ' ' : '\n'); W(tail...); }
// pseudo-random number generator
template<class T, T x1, T x2, T x3, int y1, int y2, int y3>
struct PRNG {
    using S = typename make_signed<T>::type;
    T s;
    PRNG(T _s = 0) : s(_s) {}
    T next() {
        T z = (s += x1);
        z = (z ^ (z >> y1)) * x2;
        z = (z ^ (z >> y2)) * x3;
        return z ^ (z >> y3);
    }
    T next(T n) { return next() % n; }
    S next(S l, S r) { return l + next(r - l + 1); }
    T operator()() { return next(); }
    T operator()(T n) { return next(n); }
    S operator()(S l, S r) { return next(l, r); }
    static T gen(T s) { return PRNG(s)(); }
    template<class U>
    void shuffle(U first, U last) {
        size_t n = last - first;
        for (size_t i = 0; i < n; i++) swap(first[i], first[next(i + 1)]);
    }
};
PRNG<uint32_t, 0x9E3779B1, 0x85EBCA6B, 0xC2B2AE35, 16, 13, 16> r32;
PRNG<uint64_t, 0x9E3779B97F4A7C15, 0xBF58476D1CE4E5B9, 0x94D049BB133111EB, 30, 27, 31> r64;
// program
int _main();
int main() {
    //ios::sync_with_stdio(false), cin.tie(0);
    //time_t begin = clock();
    int ret = _main();
    //time_t end = clock();
    //fprintf(stderr, "Program took %.3f seconds to compute\n", ((double)end-begin)/CLOCKS_PER_SEC);
    return ret;
}
 
/************************************************************
                CODE STARTS BELOW THIS POINT
************************************************************/
 
const int N = 200010;
const int K = 25010;
const int SN = 450;
 
int n, k, q, sn;
vector<int> mem[K], memp[K], G[N];
int pre[N], post[N], reg[N], tick, seq[N];
int spi[K], qs[N], prec[SN][K];
map<pii, int> memo;

void dfs(int u)
{
    pre[u] = ++tick;
    seq[tick] = u;
    memp[reg[u]].pb(tick);
    fora(v, G[u]) dfs(v);
    post[u] = tick;
}

int _main()
{
    R(n, k, q);
    sn = sqrt(n);

    R(reg[1]);
    mem[reg[1]].pb(1);
    forx(i, 2, n) {
        int p;
        R(p, reg[i]);
        mem[reg[i]].pb(i);
        G[p].pb(i);
    }
    int cntsp = 0;
    for1(i, k) if (mem[i].size() >= sn)
        spi[i] = ++cntsp;
    dfs(1);
    for1(i, k) if (spi[i]) {
        fora(u, mem[i]) {
            ++qs[pre[u]];
            --qs[post[u]+1];
        }
        int sum = 0;
        for1(j, n) {
            sum += qs[j];
            prec[spi[i]][reg[seq[j]]] += sum;
            qs[j] = 0;
        }
    }

    while (q--) {
        int r1, r2;
        R(r1, r2);
        int ans = 0;
        if (memo.count(pii(r1, r2))) ans = memo[pii(r1, r2)];
        else if (spi[r1]) ans = prec[spi[r1]][r2];
        else fora(u, mem[r1]) {
            auto lb = lower_bound(all(memp[r2]), pre[u]);
            auto ub = upper_bound(all(memp[r2]), post[u]);
            ans += ub-lb;
        }
        memo[pii(r1, r2)] = ans;
        W(ans);
        fflush(stdout);
    }

    return 0;
}

Compilation message

regions.cpp: In function 'll read_ll()':
regions.cpp:49:42: warning: format '%ld' expects argument of type 'long int*', but argument 2 has type 'll* {aka long long int*}' [-Wformat=]
 ll read_ll() { ll x; scanf("%" SCNd64, &x); return x; }
                                        ~~^
regions.cpp: In function 'ull read_ull()':
regions.cpp:50:45: warning: format '%lu' expects argument of type 'long unsigned int*', but argument 2 has type 'ull* {aka long long unsigned int*}' [-Wformat=]
 ull read_ull() { ull x; scanf("%" SCNu64, &x); return x; }
                                           ~~^
regions.cpp: In function 'void _W(const ll&)':
regions.cpp:60:44: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
 void _W(const ll &x) { printf("%" PRId64, x); }
                                           ~^
regions.cpp: In function 'void _W(const ull&)':
regions.cpp:61:45: warning: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'ull {aka long long unsigned int}' [-Wformat=]
 void _W(const ull &x) { printf("%" PRIu64, x); }
                                            ~^
regions.cpp: In function 'int _main()':
regions.cpp:142:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for1(i, k) if (mem[i].size() >= sn)
                    ~~~~~~~~~~~~~~^~~~~
regions.cpp: In function 'int read_int()':
regions.cpp:48:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 int read_int() { int x; scanf("%d", &x); return x; }
                         ~~~~~^~~~~~~~~~
regions.cpp: In function 'll read_ll()':
regions.cpp:49:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 ll read_ll() { ll x; scanf("%" SCNd64, &x); return x; }
                      ~~~~~^~~~~~~~~~~~~~~~
regions.cpp: In function 'ull read_ull()':
regions.cpp:50:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 ull read_ull() { ull x; scanf("%" SCNu64, &x); return x; }
                         ~~~~~^~~~~~~~~~~~~~~~
regions.cpp: In function 'dbl read_dbl()':
regions.cpp:51:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 dbl read_dbl() { dbl x; scanf("%lf", &x); return x; }
                         ~~~~~^~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 7 ms 6136 KB Output is correct
2 Correct 8 ms 6196 KB Output is correct
3 Correct 9 ms 6272 KB Output is correct
4 Correct 11 ms 6500 KB Output is correct
5 Correct 13 ms 6516 KB Output is correct
6 Correct 25 ms 6540 KB Output is correct
7 Correct 48 ms 6712 KB Output is correct
8 Correct 60 ms 6712 KB Output is correct
9 Correct 60 ms 7204 KB Output is correct
10 Correct 54 ms 7476 KB Output is correct
11 Correct 174 ms 8000 KB Output is correct
12 Correct 125 ms 8552 KB Output is correct
13 Correct 205 ms 8552 KB Output is correct
14 Correct 335 ms 9212 KB Output is correct
15 Correct 459 ms 11432 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1453 ms 13252 KB Output is correct
2 Correct 1866 ms 13252 KB Output is correct
3 Correct 2809 ms 17156 KB Output is correct
4 Correct 311 ms 17156 KB Output is correct
5 Correct 432 ms 17156 KB Output is correct
6 Correct 569 ms 17156 KB Output is correct
7 Correct 841 ms 17156 KB Output is correct
8 Correct 1269 ms 23528 KB Output is correct
9 Correct 3525 ms 24408 KB Output is correct
10 Correct 3925 ms 40696 KB Output is correct
11 Execution timed out 7485 ms 40696 KB Time limit exceeded (wall clock)
12 Incorrect 1987 ms 40696 KB Unexpected end of file - int32 expected
13 Incorrect 3201 ms 40696 KB Unexpected end of file - int32 expected
14 Incorrect 3721 ms 40696 KB Unexpected end of file - int32 expected
15 Incorrect 5137 ms 40696 KB Unexpected end of file - int32 expected
16 Incorrect 5057 ms 40696 KB Unexpected end of file - int32 expected
17 Incorrect 4513 ms 40696 KB Unexpected end of file - int32 expected