Submission #316910

#	Time	Username	Problem	Language	Result	Execution time	Memory
316910		anakib1	Meetings (IOI18_meetings)	C++17	19 / 100	4174 ms	786436 KiB

meetings

//나는 가상 소녀들에게 큰 호감이 있습니다.

#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <chrono>
#include <functional>
#include <unordered_set>
#include <unordered_map>
#include <numeric>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <deque>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <stdarg.h>
#include <utility>

using namespace std;

#define pb push_back
#define mp make_pair
#define ll long long
#define ull unisgned long long
#define ld long double
#define all(a) a.begin(), a.end()
#define SORT(a) sort(all(a))
#define pii pair<int, int>
#define tii triple<int, int, int>
#define e 1e-7
#define PI acos(-1)
#define sz(a) (int)(a.size())
#define inf 1e17
#define vi vector<int>
#define F first
#define S second
#define rng(x) for(int _ = 0; _ < (x); _++)
#define rngi(i, x) for(int i = 0; i < (x); i++)
#define rngsi(s, i, x) for(int i = (s); i <(x); i++)
#define problem "a"

template<typename A, typename B, typename C>
struct triple {
    A X;
    B Y;
    C Z;
    triple(A a = 0, B b = 0, C c = 0) :X(a), Y(b), Z(c) {}
};
template<typename A, typename B, typename C>
triple<A, B, C> make_triple(A a = 0, B b = 0, C c = 0) {
    return triple<A, B, C>(a, b, c);
}
template<typename A, typename B, typename C>
bool operator<(const triple<A, B, C>& a, const triple<A, B, C>& b) {
    if (a.X != b.X)
        return a.X < b.X;
    if (a.Y != b.Y)
        return a.Y < b.Y;
    return a.Z < b.Z;
}
template<typename T, typename SS>
ostream& operator<<(ostream& ofs, const pair<T, SS>& p) {
    ofs << "( " << p.F << " , " << p.S << " )";
    return ofs;
}
template<typename T>
void print(T a) {
    for (auto i : a)
        cout << i << ' ';
    cout << '\n';
}
template<typename T>
T max(T a, T b, T c) {
    return max(a, max(b, c));
}
template<typename T>
T min(T a, T b, T c) {
    return min(a, min(b, c));
}
template<typename T, typename D>
D min(T a) {
    return *min_element(all(a));
}
template<typename T, typename D>
D max(T a) {
    return *max_element(all(a));
}
struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};
#include "meetings.h"
struct node {
    int pr, sf, ans;
    node(){pr = sf = ans = 0; }
};
node mrg(const node& a, const node& b) { node res; res.pr = a.pr; res.sf = b.sf; res.ans = max(a.ans, b.ans, a.sf + b.pr); return res; }
vector<node> t;
void bld(int v, int l, int r, vi& a) {
    if (l > r)return;
    if (l == r)return void(t[v].pr = t[v].sf = t[v].ans = (a[l] == 1));
    int m = l + r >> 1;
    bld(v << 1, l, m, a);
    bld(v << 1 | 1, m + 1, r, a);
    t[v] = mrg(t[v << 1], t[v << 1 | 1]);
}
node get(int v, int l, int r, int _l, int _r) {
    if (r < _l || _r < l)return node();
    if (_l <= l && r <= _r)return t[v];
    int m = l + r >> 1;
    return mrg(get(v << 1, l, m, _l, _r), get(v << 1 | 1, m + 1, r, _l, _r));
}
std::vector<long long> minimum_costs(std::vector<int> h, std::vector<int> l, std::vector<int> r) {
    int n = sz(h), q = sz(l);
    bool s3 = 1; rngi(i, n) if (h[i] != 1 || h[i] != 2) s3 = 0;
    vector<ll> anss(q, inf);

    if (s3) {
        t.resize(4 * n);
        bld(1, 0, n - 1, h);
        rngi(i, q) anss[i] = (r[i] - l[i] + 1) * 2LL - get(1, 0, n - 1, l[i], r[i]).ans;
    }
    else {
        vector<vector<ll> > ans(n, vector<ll>(n));
        rngi(i, n) {
            int v = h[i]; ans[i][i] = v;
            for (int j = i - 1; j >= 0; j--) {
                v = max(v, h[j]); 
                ans[i][j] = v;
            }
            v = h[i];
            for (int j = i + 1; j < n; j++) {
                v = max(v, h[j]);
                ans[i][j] = v;
            }
            partial_sum(all(ans[i]), ans[i].begin());
        }
        auto s = [&](int x, int a, int b)->ll {
            return ans[x][b] - (a ? ans[x][a - 1] : 0LL);
        };
        rngi(i, q) 
            for (int j = l[i]; j <= r[i]; j++) anss[i] = min(anss[i], s(j, l[i], r[i]));
    }
    return anss;

}
/*
* 
4 2
2 4 3 5
0 2
1 3

*/

Compilation message (stderr)

meetings.cpp: In function 'void bld(int, int, int, std::vector<int>&)':
meetings.cpp:122:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  122 |     int m = l + r >> 1;
      |             ~~^~~
meetings.cpp: In function 'node get(int, int, int, int, int)':
meetings.cpp:130:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  130 |     int m = l + r >> 1;
      |             ~~^~~

• Subtask 1: 4 / 4
• Subtask 2: 15 / 15
• Subtask 3: 0 / 17
• Subtask 4: 0 / 24
• Subtask 5: 0 / 40