oj.uz

Submission #793571

# Submission time Handle Problem Language Result Execution time Memory
793571 2023-07-26T03:50:00 Z Jarif_Rahman Horses (IOI15_horses) C++17
17 / 100
 147 ms 29832 KB 
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

const ll md = 1e9+7;
const ll L = 1e9+5;

struct segtree{
    int k = 1;
    vector<ll> P;
    segtree(int n){
        while(k < n) k*=2;
        P.assign(2*k, 1);
    }
    void update(int i, ll x){
        i+=k;
        P[i] = x%md;
        i>>=1;
        while(i){
            P[i] = (P[i<<1]*P[(i<<1)+1])%md;
            i>>=1;
        }
    }
    ll product(int l, int r, int nd, int a, int b){
        if(a > r || b < l) return 1;
        if(a >= l && b <= r) return P[nd];
        int mid = (a+b)>>1;
        return (product(l, r, nd<<1, a, mid)*product(l, r, (nd<<1)+1, mid+1, b))%md;
    }
    ll product(int l, int r){
        return product(l, r, 1, 0, k-1);
    }
};

int n;
vector<int> X, Y;
segtree seg(0);

int query(){
    int fi = 0;
    for(ll i = n-1, p = 1; i >= 0; i--){
        p*=X[i];
        if(i == 0 || p > L){
            fi = i;
            break;
        }
    }

    ll ans = 0;
    for(ll i = fi, p = X[fi]; i < n; i++, p*=X[i]) ans = max(ans, p*Y[i]);
    ans%=md;
    if(fi) ans*=seg.product(0, fi-1), ans%=md;
    return ans;
}

int init(int _n, int _X[], int _Y[]){
    swap(n, _n);
    X.resize(n), Y.resize(n);
    seg = segtree(n);
    for(int i = 0; i < n; i++) X[i] = _X[i], Y[i] = _Y[i], seg.update(i, X[i]);
    return query();
}

int updateX(int i, int x){
    X[i] = x;
    seg.update(i, x);
    return query();
}

int updateY(int i, int y){
    Y[i] = y;
    return query();
}

Compilation message

horses.cpp: In function 'int query()':
horses.cpp:48:18: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   48 |             fi = i;
      |                  ^
horses.cpp:57:12: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   57 |     return ans;
      |            ^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 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 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 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 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Incorrect 1 ms 340 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 107 ms 17240 KB Output is correct
2 Incorrect 147 ms 29832 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 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 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 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 0 ms 212 KB Output is correct
22 Correct 1 ms 300 KB Output is correct
23 Incorrect 1 ms 340 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 216 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 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 232 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 216 KB Output is correct
14 Correct 0 ms 216 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Incorrect 1 ms 340 KB Output isn't correct
24 Halted 0 ms 0 KB -