oj.uz

Submission #954880

# Submission time Handle Problem Language Result Execution time Memory
954880 2024-03-28T18:32:24 Z EJIC_B_KEDAX Advertisement 2 (JOI23_ho_t2) C++17
100 / 100
 74 ms 6544 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;

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

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 18 ms 4708 KB Output is correct
3 Correct 26 ms 4688 KB Output is correct
4 Correct 60 ms 5964 KB Output is correct
5 Correct 25 ms 4944 KB Output is correct
6 Correct 71 ms 6304 KB Output is correct
7 Correct 74 ms 6236 KB Output is correct
8 Correct 68 ms 6220 KB Output is correct
9 Correct 39 ms 6236 KB Output is correct

Subtask #2
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 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 2396 KB Output is correct
15 Correct 1 ms 2396 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 2396 KB Output is correct

Subtask #3
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 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 2396 KB Output is correct
15 Correct 1 ms 2396 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 2396 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 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 18 ms 4708 KB Output is correct
3 Correct 26 ms 4688 KB Output is correct
4 Correct 60 ms 5964 KB Output is correct
5 Correct 25 ms 4944 KB Output is correct
6 Correct 71 ms 6304 KB Output is correct
7 Correct 74 ms 6236 KB Output is correct
8 Correct 68 ms 6220 KB Output is correct
9 Correct 39 ms 6236 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 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 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 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 2396 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 45 ms 4948 KB Output is correct
37 Correct 59 ms 5532 KB Output is correct
38 Correct 72 ms 6472 KB Output is correct
39 Correct 65 ms 6232 KB Output is correct
40 Correct 69 ms 6236 KB Output is correct
41 Correct 72 ms 6304 KB Output is correct
42 Correct 72 ms 6228 KB Output is correct
43 Correct 73 ms 6544 KB Output is correct
44 Correct 70 ms 6304 KB Output is correct
45 Correct 58 ms 6236 KB Output is correct