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답안 #715615

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
715615 2023-03-27T10:14:06 Z boris_mihov 말 (IOI15_horses) C++17
17 / 100
 82 ms 72396 KB 
#include "horses.h"
#include <algorithm>
#include <iostream>
#include <numeric>
#include <vector>

typedef long long llong;
const int MAXN = 500000 + 10;
const int MOD = 1e9 + 7;

struct Node
{
    __int128 ans;
    llong prodX;
    bool isANSbig;
    bool isXbig;

    Node()
    {
        ans = -1;
    }

    inline friend Node operator + (Node left, Node right)
    {
        Node res;
        res.prodX = left.prodX * right.prodX;
        if (res.prodX >= MOD)
        {
            res.isXbig = true;
            res.prodX %= MOD;
        } else
        {
            res.isXbig = left.isXbig || right.isXbig;
        }
        
        if (left.isXbig || right.isANSbig || (left.ans < left.prodX * right.ans))
        {
            res.ans = left.prodX * right.ans;
            if (res.ans >= 1LL * MOD * MOD)
            {
                res.isANSbig = true;
                res.ans %= 1LL * MOD * MOD; 
            }
        } else
        {
            res.ans = left.ans;
            res.isANSbig = false;
        }

        return res;
    }
};

int n;
int x[MAXN];
int y[MAXN];
struct SegmentTree
{
    Node tree[4 * MAXN];
    void build(int l, int r, int node)
    {
        if (l == r)
        {
            tree[node].prodX = x[l];
            tree[node].isXbig = false;
            tree[node].isANSbig = false;
            tree[node].ans = x[l] * y[l];
            return;
        }

        int mid = (l + r) / 2;
        build(l, mid, 2*node);
        build(mid + 1, r, 2*node + 1);
        tree[node] = tree[2*node] + tree[2*node + 1];
    }

    void update(int l, int r, int node, int queryIdx, int queryVal, bool which)
    {
        if (l == r)
        {
            if (which) tree[node].ans = queryVal;
            else tree[node].prodX = queryVal;
            return;
        }

        int mid = (l + r) / 2;
        if (queryIdx <= mid) update(l, mid, 2*node, queryIdx, queryVal, which);
        else update(mid + 1, r, 2*node + 1, queryVal, queryVal, which);
        tree[node] = tree[2*node] + tree[2*node + 1];
    }

    inline int getANS()
    {
        return tree[1].ans % MOD;
    }

    void build()
    {
        build(1, n, 1);
    }

    void update(int idx, int val, bool which)
    {
        update(1, n, 1, idx, val, which);
    }
};

SegmentTree tree;
int init(int N, int X[], int Y[]) 
{
    n = N;
    for (int i = 1 ; i <= n ; ++i)
    {
        x[i] = X[i - 1];
        y[i] = Y[i - 1];
    }

    tree.build();
	return tree.getANS();
}

int updateX(int pos, int val) 
{	
    pos++;
    tree.update(pos, val, false);
	return tree.getANS();
}

int updateY(int pos, int val) 
{
    pos++;
    tree.update(pos, val, true);
	return tree.getANS();
}

Compilation message

horses.cpp: In member function 'int SegmentTree::getANS()':
horses.cpp:94:28: warning: conversion from '__int128' to 'int' may change value [-Wconversion]
   94 |         return tree[1].ans % MOD;
      |                ~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 62832 KB Output is correct
2 Correct 24 ms 62812 KB Output is correct
3 Correct 23 ms 62932 KB Output is correct
4 Correct 23 ms 62936 KB Output is correct
5 Correct 24 ms 62800 KB Output is correct
6 Correct 25 ms 62876 KB Output is correct
7 Correct 26 ms 62848 KB Output is correct
8 Correct 24 ms 62932 KB Output is correct
9 Correct 25 ms 62852 KB Output is correct
10 Correct 27 ms 62932 KB Output is correct
11 Correct 28 ms 62852 KB Output is correct
12 Correct 24 ms 62872 KB Output is correct
13 Correct 24 ms 62908 KB Output is correct
14 Correct 25 ms 62928 KB Output is correct
15 Correct 24 ms 62896 KB Output is correct
16 Correct 23 ms 62932 KB Output is correct
17 Correct 24 ms 62928 KB Output is correct
18 Correct 24 ms 62824 KB Output is correct
19 Correct 24 ms 62868 KB Output is correct
20 Correct 26 ms 62864 KB Output is correct

Subtask #2
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 62932 KB Output is correct
2 Correct 25 ms 62932 KB Output is correct
3 Correct 25 ms 62932 KB Output is correct
4 Correct 26 ms 62884 KB Output is correct
5 Correct 25 ms 62908 KB Output is correct
6 Correct 25 ms 62896 KB Output is correct
7 Correct 24 ms 62932 KB Output is correct
8 Correct 25 ms 62924 KB Output is correct
9 Correct 24 ms 62924 KB Output is correct
10 Correct 24 ms 62928 KB Output is correct
11 Correct 24 ms 62932 KB Output is correct
12 Correct 26 ms 62884 KB Output is correct
13 Correct 29 ms 62932 KB Output is correct
14 Correct 25 ms 62828 KB Output is correct
15 Correct 25 ms 62932 KB Output is correct
16 Correct 23 ms 62920 KB Output is correct
17 Correct 25 ms 62944 KB Output is correct
18 Correct 24 ms 62932 KB Output is correct
19 Correct 24 ms 62932 KB Output is correct
20 Correct 26 ms 62932 KB Output is correct
21 Incorrect 25 ms 62828 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 82 ms 72396 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 62932 KB Output is correct
2 Correct 24 ms 62800 KB Output is correct
3 Correct 25 ms 62872 KB Output is correct
4 Correct 28 ms 62916 KB Output is correct
5 Correct 24 ms 62932 KB Output is correct
6 Correct 26 ms 62920 KB Output is correct
7 Correct 24 ms 62812 KB Output is correct
8 Correct 24 ms 62924 KB Output is correct
9 Correct 25 ms 62920 KB Output is correct
10 Correct 24 ms 62876 KB Output is correct
11 Correct 25 ms 62932 KB Output is correct
12 Correct 23 ms 62932 KB Output is correct
13 Correct 26 ms 62896 KB Output is correct
14 Correct 25 ms 62928 KB Output is correct
15 Correct 24 ms 62828 KB Output is correct
16 Correct 24 ms 62840 KB Output is correct
17 Correct 25 ms 62896 KB Output is correct
18 Correct 25 ms 62908 KB Output is correct
19 Correct 27 ms 62932 KB Output is correct
20 Correct 25 ms 62924 KB Output is correct
21 Incorrect 24 ms 62864 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 62836 KB Output is correct
2 Correct 27 ms 62824 KB Output is correct
3 Correct 25 ms 62900 KB Output is correct
4 Correct 26 ms 62892 KB Output is correct
5 Correct 26 ms 62832 KB Output is correct
6 Correct 25 ms 62828 KB Output is correct
7 Correct 25 ms 62932 KB Output is correct
8 Correct 25 ms 62908 KB Output is correct
9 Correct 27 ms 62860 KB Output is correct
10 Correct 26 ms 62932 KB Output is correct
11 Correct 24 ms 62824 KB Output is correct
12 Correct 26 ms 62860 KB Output is correct
13 Correct 24 ms 62824 KB Output is correct
14 Correct 24 ms 62868 KB Output is correct
15 Correct 26 ms 62920 KB Output is correct
16 Correct 24 ms 62888 KB Output is correct
17 Correct 24 ms 62908 KB Output is correct
18 Correct 24 ms 62932 KB Output is correct
19 Correct 24 ms 62860 KB Output is correct
20 Correct 25 ms 62872 KB Output is correct
21 Incorrect 25 ms 62912 KB Output isn't correct
22 Halted 0 ms 0 KB -