답안 #52704 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
52704	2018-06-26T11:46:38 Z	aquablitz11	Regions (IOI09_regions)	C++14	95 / 100	7367 ms	31352 KB

regions

// 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, par[N], seq[N];
int spi[K], qs[N], prec[SN][K];

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);
    //sn = 0;

    R(reg[1]);
    mem[reg[1]].pb(1);
    forx(i, 2, n) {
        R(par[i], reg[i]);
        mem[reg[i]].pb(i);
        G[par[i]].pb(i);
    }
    int cntsp = 0;
    for1(i, k) if (mem[i].size() >= sn)
        spi[i] = ++cntsp;
    assert(cntsp <= 502);
    dfs(1);
    for1(i, k) if (spi[i]) {
        for1(j, n) qs[j] = 0;
        for1(u, n) if (reg[u] == i) {
            ++qs[pre[u]];
            --qs[post[u]+1];
        }
        for1(j, n) {
            qs[j] += qs[j-1];
            prec[spi[i]][reg[seq[j]]] += qs[j];
        }
    }

    while (q--) {
        int r1, r2;
        R(r1, r2);
        int ans = 0;
        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;
        }
        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:141:34: 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; }
                         ~~~~~^~~~~~~~~~~

Subtask #1
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	6136 KB	Output is correct
2	Correct	7 ms	6324 KB	Output is correct
3	Correct	10 ms	6384 KB	Output is correct
4	Correct	9 ms	6384 KB	Output is correct
5	Correct	16 ms	6384 KB	Output is correct
6	Correct	25 ms	6384 KB	Output is correct
7	Correct	32 ms	6532 KB	Output is correct
8	Correct	21 ms	6580 KB	Output is correct
9	Correct	50 ms	6836 KB	Output is correct
10	Correct	84 ms	7092 KB	Output is correct
11	Correct	169 ms	7348 KB	Output is correct
12	Correct	174 ms	7860 KB	Output is correct
13	Correct	208 ms	7860 KB	Output is correct
14	Correct	323 ms	8372 KB	Output is correct
15	Correct	352 ms	10420 KB	Output is correct

Subtask #2
80.0 / 85.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2273 ms	11828 KB	Output is correct
2	Correct	2729 ms	11828 KB	Output is correct
3	Correct	3503 ms	13368 KB	Output is correct
4	Correct	337 ms	13368 KB	Output is correct
5	Correct	405 ms	13368 KB	Output is correct
6	Correct	514 ms	13368 KB	Output is correct
7	Correct	1254 ms	13372 KB	Output is correct
8	Correct	1167 ms	19900 KB	Output is correct
9	Correct	3274 ms	19900 KB	Output is correct
10	Correct	3530 ms	31352 KB	Output is correct
11	Execution timed out	7367 ms	31352 KB	Time limit exceeded (wall clock)
12	Correct	2325 ms	31352 KB	Output is correct
13	Correct	3008 ms	31352 KB	Output is correct
14	Correct	3007 ms	31352 KB	Output is correct
15	Correct	4555 ms	31352 KB	Output is correct
16	Correct	3967 ms	31352 KB	Output is correct
17	Correct	4045 ms	31352 KB	Output is correct

답안 #52704

Compilation message

Subtask #1 15.0 / 15.0

Subtask #2 80.0 / 85.0

Subtask #1
15.0 / 15.0

Subtask #2
80.0 / 85.0