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답안 #747470

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
747470 2023-05-24T08:09:54 Z Desh03 말 (IOI15_horses) C++17
100 / 100
 275 ms 47500 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;

const int mod = 1000000007;
vector<int> x, y;
int n;

struct segtree1 {
    vector<double> st, lz;
    vector<int> id;
    int sz;
    void init(vector<double> a) {
        sz = a.size();
        while (sz & sz - 1) ++sz;
        st.resize(sz << 1), lz.resize(sz << 1), id.resize(sz << 1);
        for (int i = sz; i < (sz << 1); i++) id[i] = i - sz;
        for (int i = 0; i < a.size(); i++) st[i + sz] = a[i] + log2(y[i]);
        for (int i = sz - 1; i; i--) pull(i);
    }
    void pull(int v) {
        if (st[v << 1] >= st[v << 1 | 1]) {
            st[v] = st[v << 1], id[v] = id[v << 1];
        } else {
            st[v] = st[v << 1 | 1], id[v] = id[v << 1 | 1];
        }
    }
    void push(int v) {
        st[v << 1] += lz[v];
        st[v << 1 | 1] += lz[v];
        lz[v << 1] += lz[v];
        lz[v << 1 | 1] += lz[v];
        lz[v] = 0;
    }
    void updx(int v, int l, int r, int ql, int qr, double x) {
        if (l > qr || r < ql) return;
        if (l >= ql && r <= qr) {
            st[v] += x, lz[v] += x;
            return;
        }
        push(v);
        int m = l + r >> 1;
        updx(v << 1, l, m, ql, qr, x);
        updx(v << 1 | 1, m + 1, r, ql, qr, x);
        pull(v);
    }
    void updy(int v, int l, int r, int u, double y) {
        if (l == r) {
            st[v] += y;
            return;
        }
        push(v);
        int m = l + r >> 1;
        if (u <= m) updy(v << 1, l, m, u, y);
        else updy(v << 1 | 1, m + 1, r, u, y);
        pull(v);
    }
    void updx(int l, int r, double x) {
        updx(1, 0, sz - 1, l, r, x);
    }
    void updy(int u, double y) {
        updy(1, 0, sz - 1, u, y);
    }
} st1;

struct segtree2 {
    vector<int> st;
    int sz;
    void init(int n) {
        sz = n;
        st.resize(sz << 1);
    }
    void upd(int id, int x) {
        for (st[id += sz] = x; id >>= 1;) st[id] = 1LL * st[id << 1] * st[id << 1 | 1] % mod;
    }
    int qry(int l, int r) {
        int s = 1;
        for (l += sz, r += sz + 1; l < r; l >>= 1, r >>= 1) {
            if (l & 1) s = 1LL * s * st[l++] % mod;
            if (r & 1) s = 1LL * s * st[--r] % mod;
        }
        return s;
    }
} st2;

int init(int N, int X[], int Y[]) {
    n = N, x.resize(n), y.resize(n);
    for (int i = 0; i < n; i++) x[i] = X[i], y[i] = Y[i];
    vector<double> p(n);
    p[0] = log2(x[0]);
    for (int i = 1; i < n; i++) p[i] = p[i - 1] + log2(x[i]);
    st1.init(p);
    st2.init(n);
    for (int i = 0; i < n; i++) st2.upd(i, x[i]);
    return 1LL * st2.qry(0, st1.id[1]) * y[st1.id[1]] % mod;
}

int updateX(int pos, int val) {
    st1.updx(pos, n - 1, log2(val) - log2(x[pos]));
    st2.upd(pos, val);
    x[pos] = val;
    return 1LL * st2.qry(0, st1.id[1]) * y[st1.id[1]] % mod;
}

int updateY(int pos, int val) {
    st1.updy(pos, log2(val) - log2(y[pos]));
    y[pos] = val;
    return 1LL * st2.qry(0, st1.id[1]) * y[st1.id[1]] % mod;
}

Compilation message

horses.cpp: In member function 'void segtree1::init(std::vector<double>)':
horses.cpp:14:20: warning: conversion from 'std::vector<double>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   14 |         sz = a.size();
      |              ~~~~~~^~
horses.cpp:15:24: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   15 |         while (sz & sz - 1) ++sz;
      |                     ~~~^~~
horses.cpp:18:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |         for (int i = 0; i < a.size(); i++) st[i + sz] = a[i] + log2(y[i]);
      |                         ~~^~~~~~~~~~
horses.cpp: In member function 'void segtree1::updx(int, int, int, int, int, double)':
horses.cpp:35:59: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   35 |     void updx(int v, int l, int r, int ql, int qr, double x) {
      |                                                    ~~~~~~~^
horses.cpp:6:13: note: shadowed declaration is here
    6 | vector<int> x, y;
      |             ^
horses.cpp:42:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   42 |         int m = l + r >> 1;
      |                 ~~^~~
horses.cpp: In member function 'void segtree1::updy(int, int, int, int, double)':
horses.cpp:47:50: warning: declaration of 'y' shadows a global declaration [-Wshadow]
   47 |     void updy(int v, int l, int r, int u, double y) {
      |                                           ~~~~~~~^
horses.cpp:6:16: note: shadowed declaration is here
    6 | vector<int> x, y;
      |                ^
horses.cpp:53:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   53 |         int m = l + r >> 1;
      |                 ~~^~~
horses.cpp: In member function 'void segtree1::updx(int, int, double)':
horses.cpp:58:36: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   58 |     void updx(int l, int r, double x) {
      |                             ~~~~~~~^
horses.cpp:6:13: note: shadowed declaration is here
    6 | vector<int> x, y;
      |             ^
horses.cpp: In member function 'void segtree1::updy(int, double)':
horses.cpp:61:29: warning: declaration of 'y' shadows a global declaration [-Wshadow]
   61 |     void updy(int u, double y) {
      |                      ~~~~~~~^
horses.cpp:6:16: note: shadowed declaration is here
    6 | vector<int> x, y;
      |                ^
horses.cpp: In member function 'void segtree2::init(int)':
horses.cpp:69:19: warning: declaration of 'n' shadows a global declaration [-Wshadow]
   69 |     void init(int n) {
      |               ~~~~^
horses.cpp:7:5: note: shadowed declaration is here
    7 | int n;
      |     ^
horses.cpp: In member function 'void segtree2::upd(int, int)':
horses.cpp:73:26: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   73 |     void upd(int id, int x) {
      |                      ~~~~^
horses.cpp:6:13: note: shadowed declaration is here
    6 | vector<int> x, y;
      |             ^
horses.cpp:74:88: warning: conversion from 'long long int' to '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} may change value [-Wconversion]
   74 |         for (st[id += sz] = x; id >>= 1;) st[id] = 1LL * st[id << 1] * st[id << 1 | 1] % mod;
      |                                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In member function 'int segtree2::qry(int, int)':
horses.cpp:79:46: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   79 |             if (l & 1) s = 1LL * s * st[l++] % mod;
      |                            ~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp:80:46: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   80 |             if (r & 1) s = 1LL * s * st[--r] % mod;
      |                            ~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:95:55: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   95 |     return 1LL * st2.qry(0, st1.id[1]) * y[st1.id[1]] % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:102:55: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  102 |     return 1LL * st2.qry(0, st1.id[1]) * y[st1.id[1]] % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:108:55: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  108 |     return 1LL * st2.qry(0, st1.id[1]) * y[st1.id[1]] % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 296 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 0 ms 304 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 296 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 312 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 312 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 139 ms 38236 KB Output is correct
2 Correct 267 ms 47444 KB Output is correct
3 Correct 218 ms 38656 KB Output is correct
4 Correct 275 ms 42424 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 300 KB Output is correct
23 Correct 1 ms 388 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 308 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 122 ms 40420 KB Output is correct
34 Correct 132 ms 40420 KB Output is correct
35 Correct 140 ms 47348 KB Output is correct
36 Correct 139 ms 47300 KB Output is correct
37 Correct 102 ms 38632 KB Output is correct
38 Correct 114 ms 39496 KB Output is correct
39 Correct 97 ms 38516 KB Output is correct
40 Correct 148 ms 42376 KB Output is correct
41 Correct 97 ms 38504 KB Output is correct
42 Correct 110 ms 38536 KB Output is correct
43 Correct 138 ms 42824 KB Output is correct
44 Correct 110 ms 42840 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 2 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 300 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 3 ms 312 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 146 ms 38592 KB Output is correct
34 Correct 258 ms 47484 KB Output is correct
35 Correct 204 ms 38604 KB Output is correct
36 Correct 247 ms 42496 KB Output is correct
37 Correct 115 ms 40424 KB Output is correct
38 Correct 121 ms 40416 KB Output is correct
39 Correct 139 ms 47292 KB Output is correct
40 Correct 154 ms 47276 KB Output is correct
41 Correct 99 ms 38596 KB Output is correct
42 Correct 108 ms 39500 KB Output is correct
43 Correct 96 ms 38548 KB Output is correct
44 Correct 124 ms 42384 KB Output is correct
45 Correct 97 ms 38516 KB Output is correct
46 Correct 93 ms 38556 KB Output is correct
47 Correct 112 ms 42864 KB Output is correct
48 Correct 121 ms 42884 KB Output is correct
49 Correct 230 ms 40432 KB Output is correct
50 Correct 210 ms 40436 KB Output is correct
51 Correct 197 ms 47500 KB Output is correct
52 Correct 223 ms 47456 KB Output is correct
53 Correct 209 ms 38668 KB Output is correct
54 Correct 213 ms 39532 KB Output is correct
55 Correct 168 ms 38592 KB Output is correct
56 Correct 205 ms 42500 KB Output is correct
57 Correct 150 ms 38648 KB Output is correct
58 Correct 155 ms 38652 KB Output is correct
59 Correct 109 ms 42884 KB Output is correct