oj.uz

Submission #715624

# Submission time Handle Problem Language Result Execution time Memory
715624 2023-03-27T10:27:09 Z boris_mihov Horses (IOI15_horses) C++17
17 / 100
 1500 ms 102012 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;
    __int128 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 >= 1LL * MOD * MOD)
        {
            res.isXbig = true;
            res.prodX %= 1LL * MOD * 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 || left.isXbig || right.isANSbig)
            {
                res.isANSbig = true;
                res.ans %= 1LL * MOD * MOD; 
            }
        } else
        {
            res.ans = left.ans;
            res.isANSbig = left.isANSbig;
        }

        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 = 1LL * 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) x[l] = queryVal;
            else y[l] = queryVal;

            tree[node].ans = 1LL * x[l] * y[l];
            tree[node].prodX = x[l];
            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);
    tree.build();
	return tree.getANS();
}

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

Compilation message

horses.cpp: In member function 'int SegmentTree::getANS()':
horses.cpp:97:28: warning: conversion from '__int128' to 'int' may change value [-Wconversion]
   97 |         return tree[1].ans % MOD;
      |                ~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 94164 KB Output is correct
2 Correct 42 ms 94236 KB Output is correct
3 Correct 37 ms 94196 KB Output is correct
4 Correct 39 ms 94220 KB Output is correct
5 Correct 35 ms 94232 KB Output is correct
6 Correct 35 ms 94156 KB Output is correct
7 Correct 39 ms 94220 KB Output is correct
8 Correct 39 ms 94168 KB Output is correct
9 Correct 38 ms 94160 KB Output is correct
10 Correct 36 ms 94152 KB Output is correct
11 Correct 38 ms 94156 KB Output is correct
12 Correct 39 ms 94236 KB Output is correct
13 Correct 42 ms 94136 KB Output is correct
14 Correct 38 ms 94196 KB Output is correct
15 Correct 43 ms 94216 KB Output is correct
16 Correct 37 ms 94192 KB Output is correct
17 Correct 38 ms 94220 KB Output is correct
18 Correct 36 ms 94124 KB Output is correct
19 Correct 41 ms 94392 KB Output is correct
20 Correct 36 ms 94164 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 94156 KB Output is correct
2 Correct 39 ms 94160 KB Output is correct
3 Correct 35 ms 94220 KB Output is correct
4 Correct 35 ms 94160 KB Output is correct
5 Correct 37 ms 94192 KB Output is correct
6 Correct 39 ms 94224 KB Output is correct
7 Correct 39 ms 94156 KB Output is correct
8 Correct 36 ms 94140 KB Output is correct
9 Correct 36 ms 94200 KB Output is correct
10 Correct 35 ms 94156 KB Output is correct
11 Correct 39 ms 94232 KB Output is correct
12 Correct 36 ms 94212 KB Output is correct
13 Correct 37 ms 94156 KB Output is correct
14 Correct 37 ms 94124 KB Output is correct
15 Correct 39 ms 94120 KB Output is correct
16 Correct 39 ms 94260 KB Output is correct
17 Correct 36 ms 94224 KB Output is correct
18 Correct 35 ms 94192 KB Output is correct
19 Correct 39 ms 94164 KB Output is correct
20 Correct 36 ms 94216 KB Output is correct
21 Incorrect 39 ms 94368 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1584 ms 102012 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 94232 KB Output is correct
2 Correct 37 ms 94168 KB Output is correct
3 Correct 36 ms 94152 KB Output is correct
4 Correct 36 ms 94232 KB Output is correct
5 Correct 36 ms 94148 KB Output is correct
6 Correct 36 ms 94164 KB Output is correct
7 Correct 36 ms 94152 KB Output is correct
8 Correct 37 ms 94136 KB Output is correct
9 Correct 36 ms 94196 KB Output is correct
10 Correct 44 ms 94168 KB Output is correct
11 Correct 38 ms 94148 KB Output is correct
12 Correct 35 ms 94168 KB Output is correct
13 Correct 37 ms 94156 KB Output is correct
14 Correct 35 ms 94108 KB Output is correct
15 Correct 37 ms 94160 KB Output is correct
16 Correct 42 ms 94136 KB Output is correct
17 Correct 36 ms 94152 KB Output is correct
18 Correct 44 ms 94256 KB Output is correct
19 Correct 36 ms 94172 KB Output is correct
20 Correct 35 ms 94172 KB Output is correct
21 Incorrect 36 ms 94156 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 94156 KB Output is correct
2 Correct 39 ms 94156 KB Output is correct
3 Correct 38 ms 94144 KB Output is correct
4 Correct 35 ms 94164 KB Output is correct
5 Correct 42 ms 94172 KB Output is correct
6 Correct 37 ms 94184 KB Output is correct
7 Correct 36 ms 94180 KB Output is correct
8 Correct 39 ms 94216 KB Output is correct
9 Correct 36 ms 94248 KB Output is correct
10 Correct 35 ms 94212 KB Output is correct
11 Correct 41 ms 94156 KB Output is correct
12 Correct 38 ms 94216 KB Output is correct
13 Correct 42 ms 94136 KB Output is correct
14 Correct 36 ms 94160 KB Output is correct
15 Correct 37 ms 94116 KB Output is correct
16 Correct 35 ms 94120 KB Output is correct
17 Correct 37 ms 94228 KB Output is correct
18 Correct 36 ms 94156 KB Output is correct
19 Correct 43 ms 94184 KB Output is correct
20 Correct 36 ms 94124 KB Output is correct
21 Incorrect 35 ms 94180 KB Output isn't correct
22 Halted 0 ms 0 KB -