oj.uz

답안 #954884

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
954884 2024-03-28T18:36:24 Z EJIC_B_KEDAX Advertisement 2 (JOI23_ho_t2) C++17
100 / 100
 85 ms 12272 KB 
#ifdef LOCAL
    #define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>

#ifndef LOCAL
    // #pragma GCC optimize("O3")
    // #pragma GCC optimize("Ofast")
    // #pragma GCC optimize("unroll-loops")
    // #pragma GCC target("avx,avx2,bmi,bmi2,popcnt,lzcnt")
#endif
using namespace std;
using ll = long long;
using ld = long double;
#define x first
#define y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

mt19937_64 mt(time(0));

void solve();
void init();

int32_t main() {
#ifndef LOCAL
    // cin.tie(nullptr)->sync_with_stdio(false);
#endif
    // cout << fixed << setprecision(30);
    // init();
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
}

namespace fastio {
    static constexpr uint32_t SZ = 1 << 17;
    char ibuf[SZ];
    char obuf[SZ];
    uint32_t pil = 0, pir = 0, por = 0;

    struct Pre {
        char num[40000];

        constexpr Pre() : num() {
            for (int i = 0; i < 10000; i++) {
                int n = i;
                for (int j = 3; j >= 0; j--) {
                    num[i * 4 + j] = n % 10 + '0';
                    n /= 10;
                }
            }
        }
    } constexpr pre;

    __attribute__((target("avx2"), optimize("O3"))) inline void load() {
        memcpy(ibuf, ibuf + pil, pir - pil);
        pir = pir - pil + fread(ibuf + pir - pil, 1, SZ - pir + pil, stdin);
        pil = 0;
    }

    __attribute__((target("avx2"), optimize("O3"))) inline void flush() {
        fwrite(obuf, 1, por, stdout);
        por = 0;
    }

    inline void read(char &c) { c = ibuf[pil++]; }

    template<typename T>
    __attribute__((target("avx2"), optimize("O3"))) inline void read(T &x) {
        if (pil + 32 > pir) load();
        char c;
        do
            read(c);
        while (c < '-');
        bool minus = 0;
        if (std::is_signed<T>::value) {
            if (c == '-') {
                minus = 1;
                read(c);
            }
        }
        x = 0;
        while (c >= '0') {
            x = x * 10 + (c & 15);
            read(c);
        }
        if (std::is_signed<T>::value) {
            if (minus) x = -x;
        }
    }

    inline void write(char c) { obuf[por++] = c; }

    template<typename T>
    __attribute__((target("avx2"), optimize("O3"))) inline void write(T x) {
        if (por + 32 > SZ) flush();
        if (!x) {
            write('0');
            return;
        }
        if (std::is_signed<T>::value) {
            if (x < 0) {
                write('-');
                x = -x;
            }
        }
        if (x >= 10000000000000000) {
            uint32_t r1 = x % 100000000;
            uint64_t q1 = x / 100000000;
            uint32_t r2 = q1 % 100000000;
            uint32_t q2 = q1 / 100000000;
            uint32_t n1 = r1 % 10000;
            uint32_t n2 = r1 / 10000;
            uint32_t n3 = r2 % 10000;
            uint32_t n4 = r2 / 10000;
            if (x >= 1000000000000000000) {
                uint32_t q3 = (q2 * 20972) >> 21;
                uint32_t r3 = q2 - q3 * 100;
                uint32_t q4 = (r3 * 205) >> 11;
                uint32_t r4 = r3 - q4 * 10;
                obuf[por + 0] = '0' + q3;
                obuf[por + 1] = '0' + q4;
                obuf[por + 2] = '0' + r4;
                memcpy(obuf + por + 3, pre.num + (n4 << 2), 4);
                memcpy(obuf + por + 7, pre.num + (n3 << 2), 4);
                memcpy(obuf + por + 11, pre.num + (n2 << 2), 4);
                memcpy(obuf + por + 15, pre.num + (n1 << 2), 4);
                por += 19;
            } else if (x >= 100000000000000000) {
                uint32_t q3 = (q2 * 205) >> 11;
                uint32_t r3 = q2 - q3 * 10;
                obuf[por + 0] = '0' + q3;
                obuf[por + 1] = '0' + r3;
                memcpy(obuf + por + 2, pre.num + (n4 << 2), 4);
                memcpy(obuf + por + 6, pre.num + (n3 << 2), 4);
                memcpy(obuf + por + 10, pre.num + (n2 << 2), 4);
                memcpy(obuf + por + 14, pre.num + (n1 << 2), 4);
                por += 18;
            } else {
                obuf[por + 0] = '0' + q2;
                memcpy(obuf + por + 1, pre.num + (n4 << 2), 4);
                memcpy(obuf + por + 5, pre.num + (n3 << 2), 4);
                memcpy(obuf + por + 9, pre.num + (n2 << 2), 4);
                memcpy(obuf + por + 13, pre.num + (n1 << 2), 4);
                por += 17;
            }
        } else {
            int i = 8;
            char buf[12];
            while (x >= 10000) {
                memcpy(buf + i, pre.num + (x % 10000) * 4, 4);
                x /= 10000;
                i -= 4;
            }
            if (x < 100) {
                if (x < 10) {
                    write(char('0' + x));
                } else {
                    obuf[por + 0] = '0' + x / 10;
                    obuf[por + 1] = '0' + x % 10;
                    por += 2;
                }
            } else {
                if (x < 1000) {
                    memcpy(obuf + por, pre.num + (x << 2) + 1, 3);
                    por += 3;
                } else {
                    memcpy(obuf + por, pre.num + (x << 2), 4);
                    por += 4;
                }
            }
            memcpy(obuf + por, buf + i + 4, 8 - i);
            por += 8 - i;
        }
    }

    inline int getChar() {
        if (pil + 32 > pir) load();
        return ibuf[pil++]; }

    inline int readChar() {
        if (pil + 32 > pir) load();
        int c = getChar();
        while (c != -1 && c <= 32) c = getChar();
        return c;
    }

    inline void read(char *s) {
        int c = readChar();
        while (c > 32)
            *s++ = c, c = getChar();
        *s = 0;
    }

    inline void read(std::string &s) {
        s.clear();
        int c = readChar();
        while (c > 32) s.push_back(c), c = getChar();
    }

    inline void write(const char *s) {
        while (*s) {
            if (por + 32 > SZ) flush();
            write(*s++);
        }
    }

    inline void write(std::string &s) {
        for (auto &i: s) {
            if (por + 32 > SZ) flush();
            write(i);
        }
    }

    inline void write(double x) {
        if (por + 32 > SZ) flush();
        if (x < 0)
            write('-'), x = -x;
        int t = (int) x;
        write(t), x -= t;
        write('.');
        for (int i = 18 - 1; i > 0; i--) {
            x *= 10;
            t = std::min(9, (int) x);
            write('0' + t), x -= t;
        }
        x *= 10;
        t = std::min(9, (int) (x + 0.5));
        write('0' + t);
    }

    template<typename T, typename ...Args>
    inline void read(T &x, Args &...args) {
        read(x);
        read(args...);
    }

    template<typename T, typename ...Args>
    inline void write(T x, Args ...args) {
        write(x);
        write(args...);
    }

    struct AutoFlush {
        ~AutoFlush() { flush(); }
    } AutoFlush;

}  // namespace fastio
using fastio::read;
using fastio::write;


void init() {}

const int N = 500500;
pair<int, int> a[N];
int st[N], stsz;

inline bool check(int i, int j) {
    return a[i].y - a[j].y >= abs(a[i].x - a[j].x);
}

void solve() {
    int n;
    // cin >> n;
    read(n);
    for (int i = 0; i < n; i++) {
        // cin >> a[i].x >> a[i].y;
        read(a[i].x, a[i].y);
    }
    sort(a, a + n);
    for (int i = 0; i < n; i++) {
        while (stsz && check(i, st[stsz - 1])) {
            stsz--;
        }
        if (!stsz || !check(st[stsz - 1], i)) {
            st[stsz++] = i;
        }
    }
    // cout << st.size() << '\n';
    write(stsz, '\n');
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 18 ms 6588 KB Output is correct
3 Correct 27 ms 7128 KB Output is correct
4 Correct 62 ms 10852 KB Output is correct
5 Correct 27 ms 8884 KB Output is correct
6 Correct 71 ms 11780 KB Output is correct
7 Correct 77 ms 12028 KB Output is correct
8 Correct 67 ms 11696 KB Output is correct
9 Correct 39 ms 11736 KB Output is correct

Subtask #2
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 2 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2552 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2496 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2492 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct

Subtask #3
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 2 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2552 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2496 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2492 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2496 KB Output is correct
22 Correct 1 ms 2512 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 2 ms 2392 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2648 KB Output is correct

Subtask #4
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 18 ms 6588 KB Output is correct
3 Correct 27 ms 7128 KB Output is correct
4 Correct 62 ms 10852 KB Output is correct
5 Correct 27 ms 8884 KB Output is correct
6 Correct 71 ms 11780 KB Output is correct
7 Correct 77 ms 12028 KB Output is correct
8 Correct 67 ms 11696 KB Output is correct
9 Correct 39 ms 11736 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 2 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2552 KB Output is correct
15 Correct 1 ms 2648 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2496 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2492 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2496 KB Output is correct
31 Correct 1 ms 2512 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 2 ms 2392 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2648 KB Output is correct
36 Correct 47 ms 8832 KB Output is correct
37 Correct 67 ms 10196 KB Output is correct
38 Correct 71 ms 12272 KB Output is correct
39 Correct 73 ms 10328 KB Output is correct
40 Correct 85 ms 11856 KB Output is correct
41 Correct 77 ms 11964 KB Output is correct
42 Correct 81 ms 11984 KB Output is correct
43 Correct 76 ms 11516 KB Output is correct
44 Correct 73 ms 11884 KB Output is correct
45 Correct 60 ms 9744 KB Output is correct