oj.uz

Submission #579517

# Submission time Handle Problem Language Result Execution time Memory
579517 2022-06-19T09:58:59 Z JooDdae Horses (IOI15_horses) C++17
34 / 100
 1500 ms 56708 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define mid ((l+r) >> 1)

const ll INF = 1e9+1;
const int mod = 1e9+7;
int n, x[500500], y[500500];
ll t1[2002002], t3[2002002];
array<int, 2> t2[2002002];
set<int> s;

ll build1(int node = 1, int l = 0, int r = n-1){
    if(l == r) return t1[node] = x[l];
    return t1[node] = min(INF, build1(node*2, l, mid) * build1(node*2+1, mid+1, r));
}

array<int, 2> build2(int node = 1, int l = 0, int r = n-1){
    if(l == r) return t2[node] = {y[l], l};
    return t2[node] = max(build2(node*2, l, mid), build2(node*2+1, mid+1, r));
}

ll build3(int node = 1, int l = 0, int r = n-1){
    if(l == r) return t3[node] = x[l];
    return t3[node] = build3(node*2, l, mid) * build3(node*2+1, mid+1, r) % mod;
}

void update1(int pos, int val, int node = 1, int l = 0, int r = n-1){
    if(pos < l || r < pos) return;
    if(l == r){
        t1[node] = val;
        return;
    }
    update1(pos, val, node*2, l, mid), update1(pos, val, node*2+1, mid+1, r);
    t1[node] = min(INF, t1[node*2] * t1[node*2+1]);
}

void update2(int pos, int val, int node = 1, int l = 0, int r = n-1){
    if(pos < l || r < pos) return;
    if(l == r){
        t2[node][0] = val;
        return;
    }
    update2(pos, val, node*2, l, mid), update2(pos, val, node*2+1, mid+1, r);
    t2[node] = max(t2[node*2], t2[node*2+1]);
}

void update3(int pos, int val, int node = 1, int l = 0, int r = n-1){
    if(pos < l || r < pos) return;
    if(l == r){
        t3[node] = val;
        return;
    }
    update3(pos, val, node*2, l, mid), update3(pos, val, node*2+1, mid+1, r);
    t3[node] = t3[node*2] * t3[node*2+1] % mod;
}

ll find1(int nl, int nr, int node = 1, int l = 0, int r = n-1){
    if(nr < l || r < nl) return 1;
    if(nl <= l && r <= nr) return t1[node];
    return min(INF, find1(nl, nr, node*2, l, mid) * find1(nl, nr, node*2+1, mid+1, r));
}

array<int, 2> find2(int nl, int nr, int node = 1, int l = 0, int r = n-1){
    if(nr < l || r < nl) return {0, 0};
    if(nl <= l && r <= nr) return t2[node];
    return max(find2(nl, nr, node*2, l, mid), find2(nl, nr, node*2+1, mid+1, r));
}

ll find3(int nl, int nr, int node = 1, int l = 0, int r = n-1){
    if(nr < l || r < nl) return 1;
    if(nl <= l && r <= nr) return t3[node];
    return find3(nl, nr, node*2, l, mid) * find3(nl, nr, node*2+1, mid+1, r) % mod;
}

int find_max(int l, int r){
    if(l == r) return r;
    ll k = x[r] * y[r];
    auto mx = find2(l, r-1);
    return k > mx[0] ? r : mx[1];
}

int solve(){
    auto it = s.rbegin();
    int mx = find_max(*next(it)+1, *it);

    for(int k=mx-1;k>=0;k--){
        if(y[k] > find1(k+1, mx) * y[mx]) mx = k;
    }

    return find3(0, mx) * y[mx] % mod;
}

int init(int N, int X[], int Y[]) {
    n = N;
    for(int i=0;i<N;i++) x[i] = X[i], y[i] = Y[i];

    s.insert(-1);
    for(int i=0;i<N;i++) if(x[i] > 1) s.insert(i);
    s.insert(N-1);

    build1(), build2(), build3();

    return solve();
}

int updateX(int pos, int val) { 
    if(pos < n-1 && x[pos] > 1) s.erase(pos);
    x[pos] = val, update1(pos, val), update3(pos, val);
    if(pos < n-1 && x[pos] > 1) s.insert(pos);
    return solve();
}

int updateY(int pos, int val) {
    y[pos] = val, update2(pos, val);
    return solve();
}

Compilation message

horses.cpp: In function 'int solve()':
horses.cpp:93:33: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   93 |     return find3(0, mx) * y[mx] % mod;
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 95 ms 420 KB Output is correct
24 Correct 109 ms 440 KB Output is correct
25 Correct 119 ms 468 KB Output is correct
26 Correct 78 ms 468 KB Output is correct
27 Correct 133 ms 588 KB Output is correct
28 Correct 142 ms 428 KB Output is correct
29 Correct 127 ms 412 KB Output is correct
30 Correct 128 ms 468 KB Output is correct
31 Correct 81 ms 536 KB Output is correct
32 Correct 103 ms 340 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1591 ms 56164 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 97 ms 432 KB Output is correct
24 Correct 106 ms 428 KB Output is correct
25 Correct 118 ms 468 KB Output is correct
26 Correct 76 ms 468 KB Output is correct
27 Correct 128 ms 428 KB Output is correct
28 Correct 130 ms 428 KB Output is correct
29 Correct 133 ms 400 KB Output is correct
30 Correct 132 ms 468 KB Output is correct
31 Correct 79 ms 528 KB Output is correct
32 Correct 103 ms 404 KB Output is correct
33 Execution timed out 1586 ms 33208 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 99 ms 432 KB Output is correct
24 Correct 122 ms 432 KB Output is correct
25 Correct 117 ms 468 KB Output is correct
26 Correct 82 ms 468 KB Output is correct
27 Correct 130 ms 412 KB Output is correct
28 Correct 134 ms 436 KB Output is correct
29 Correct 133 ms 340 KB Output is correct
30 Correct 134 ms 468 KB Output is correct
31 Correct 78 ms 340 KB Output is correct
32 Correct 101 ms 468 KB Output is correct
33 Execution timed out 1584 ms 56708 KB Time limit exceeded
34 Halted 0 ms 0 KB -