답안 #52692 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
52692	2018-06-26T11:20:56 Z	aquablitz11	Regions (IOI09_regions)	C++14	50 / 100	7129 ms	131072 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 = 501;
 
#define map unordered_map
 
int n, k, q, sn;
int par[N], reg[N], pre[N], post[N], tick, seq[N];
vector<int> G[N], mem[K], memp[K];
map<int, map<int, int>> prec, qs;
 
void dfs(int u)
{
    pre[u] = ++tick;
    memp[reg[u]].pb(tick);
    seq[tick] = u;
    fora(v, G[u])
        dfs(v);
    post[u] = tick;
    if (mem[reg[u]].size() > sn) {
        ++qs[reg[u]][pre[u]];
        --qs[reg[u]][post[u]+1];
    }
}
 
int _main()
{
    R(n, k, q);
    R(reg[1]);
    mem[reg[1]].pb(1);
    forx(i, 2, n) {
        R(par[i], reg[i]);
        G[par[i]].pb(i);
        mem[reg[i]].pb(i);
    }
    sn = sqrt(n);
    dfs(1);
    for1(i, k) if (mem[i].size() > sn) {
        for1(j, n) {
            qs[i][j] += qs[i][j-1];
            prec[i][reg[seq[j]]] += qs[i][j];
        }
    }
    while (q--) {
        int r1, r2;
        R(r1, r2);
        if (mem[r1].size() > sn) {
            W(prec[r1][r2]);
        } else {
            int ans = 0;
            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 'void dfs(int)':
regions.cpp:128:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (mem[reg[u]].size() > sn) {
         ~~~~~~~~~~~~~~~~~~~^~~~
regions.cpp: In function 'int _main()':
regions.cpp:146:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for1(i, k) if (mem[i].size() > sn) {
                    ~~~~~~~~~~~~~~^~~~
regions.cpp:155:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (mem[r1].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	7 ms	6132 KB	Output is correct
2	Correct	7 ms	6196 KB	Output is correct
3	Correct	8 ms	6272 KB	Output is correct
4	Correct	8 ms	6376 KB	Output is correct
5	Correct	12 ms	6424 KB	Output is correct
6	Correct	26 ms	6424 KB	Output is correct
7	Correct	33 ms	6456 KB	Output is correct
8	Correct	36 ms	6712 KB	Output is correct
9	Correct	39 ms	6972 KB	Output is correct
10	Correct	83 ms	6972 KB	Output is correct
11	Correct	131 ms	7356 KB	Output is correct
12	Correct	157 ms	7868 KB	Output is correct
13	Correct	202 ms	7868 KB	Output is correct
14	Correct	412 ms	12396 KB	Output is correct
15	Correct	372 ms	12544 KB	Output is correct

Subtask #2
35.0 / 85.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2842 ms	85516 KB	Output is correct
2	Correct	3413 ms	85516 KB	Output is correct
3	Correct	4314 ms	85516 KB	Output is correct
4	Correct	310 ms	85516 KB	Output is correct
5	Correct	391 ms	85516 KB	Output is correct
6	Correct	1577 ms	131072 KB	Output is correct
7	Correct	3092 ms	131072 KB	Output is correct
8	Runtime error	2719 ms	131072 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
9	Incorrect	2940 ms	131072 KB	Unexpected end of file - int32 expected
10	Runtime error	2722 ms	131072 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
11	Incorrect	7129 ms	131072 KB	Unexpected end of file - int32 expected
12	Incorrect	2140 ms	131072 KB	Unexpected end of file - int32 expected
13	Incorrect	2757 ms	131072 KB	Unexpected end of file - int32 expected
14	Execution timed out	5296 ms	131072 KB	Time limit exceeded (wall clock)
15	Incorrect	4568 ms	131072 KB	Unexpected end of file - int32 expected
16	Incorrect	4220 ms	131072 KB	Unexpected end of file - int32 expected
17	Execution timed out	5369 ms	131072 KB	Time limit exceeded (wall clock)

답안 #52692

Compilation message

Subtask #1 15.0 / 15.0

Subtask #2 35.0 / 85.0

Subtask #1
15.0 / 15.0

Subtask #2
35.0 / 85.0