oj.uz

Submission #734661

# Submission time Handle Problem Language Result Execution time Memory
734661 2023-05-02T18:41:45 Z Magikarp4000 Horses (IOI15_horses) C++17
100 / 100
 648 ms 64852 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
#define OPTM ios_base::sync_with_stdio(0); cin.tie(0);
#define INF int64_t(1e9+7)
#define ln '\n' 
#define ll long long
#define ull unsigned long long
#define ui unsigned int
#define us unsigned short
#define FOR(i,s,n) for (int i = s; i < n; i++)
#define FORR(i,n,s) for (int i = n; i > s; i--)
#define FORX(u, arr) for (auto u : arr)
#define PB push_back
#define in(v,x) (v.find(x) != v.end())
#define F first
#define S second
#define PII pair<int, int>
#define PLL pair<ll, ll>
#define UM unordered_map
#define US unordered_set
#define PQ priority_queue
#define ALL(v) v.begin(), v.end()
const ll LLINF = 1e18+1;

const int MAXN = 5e5+10, LOG = 30;
const ll MAXX = 1e9;
int n;
ll x[MAXN], y[MAXN];
set<int> a;
ll st[MAXN*4], st1[MAXN*4];

void build(int s, int tl, int tr) {
    if (tl == tr) st[s] = y[tl];
    else {
        int tm = (tl+tr)/2;
        build(s*2,tl,tm);
        build(s*2+1,tm+1,tr);
        st[s] = max(st[s*2], st[s*2+1]);
    }
}

void update(int s, int tl, int tr, int idx, ll val) {
    if (tl == tr) st[s] = val;
    else {
        int tm = (tl+tr)/2;
        if (idx <= tm) update(s*2,tl,tm,idx,val);
        else update(s*2+1,tm+1,tr,idx,val);
        st[s] = max(st[s*2], st[s*2+1]);
    }
}

ll query(int s, int tl, int tr, int l, int r) {
    if (l <= tl && r >= tr) return st[s];
    else {
        int tm = (tl+tr)/2;
        ll cur = -INF;
        if (l <= tm) cur = max(cur, query(s*2,tl,tm,l,r));
        if (r > tm) cur = max(cur, query(s*2+1,tm+1,tr,l,r));
        return cur;
    }
}

void build1(int s, int tl, int tr) {
    if (tl == tr) st1[s] = x[tl];
    else {
        int tm = (tl+tr)/2;
        build1(s*2,tl,tm);
        build1(s*2+1,tm+1,tr);
        st1[s] = (st1[s*2]*st1[s*2+1])%INF;
    }
}

void update1(int s, int tl, int tr, int idx, ll val) {
    if (tl == tr) st1[s] = val;
    else {
        int tm = (tl+tr)/2;
        if (idx <= tm) update1(s*2,tl,tm,idx,val);
        else update1(s*2+1,tm+1,tr,idx,val);
        st1[s] = (st1[s*2]*st1[s*2+1])%INF;
    }
}

ll query1(int s, int tl, int tr, int l, int r) {
    if (l <= tl && r >= tr) return st1[s];
    else {
        int tm = (tl+tr)/2;
        ll cur = 1ll;
        if (l <= tm) cur = (cur*query1(s*2,tl,tm,l,r))%INF;
        if (r > tm) cur = (cur*query1(s*2+1,tm+1,tr,l,r))%INF;
        return cur;
    }
}

int calc() {
    vector<int> v;
    int cnt = 0;
    for (auto it = a.rbegin(); it != a.rend(); it++) {
    	v.PB(*it);
    	cnt++;
    	if (cnt >= LOG) break;
    }
    //v.PB(0);
    reverse(ALL(v));
    // FORX(u,v) cout << u << ' ';
    // cout << ln;
    int vn = v.size();
    ll xval = 1, yval = 0, cur = -INF, idx = -1;
    FOR(i,0,vn) {
        int en = i == vn-1 ? n-1 : v[i+1]-1;
        xval *= x[v[i]];
        yval = query(1,0,n-1,v[i],en);
        if (xval > MAXX || xval*yval > cur) {
            idx = i;
            cur = yval;
            xval = 1;
        }
    }
    int en = idx == vn-1 ? n-1 : v[idx+1]-1;
    // cout << v[idx] << ln;
    ll res = (query1(1,0,n-1,0,v[idx])*query(1,0,n-1,v[idx],en))%INF;
    //ll res = 0;
    return res;
}

int init(int N, int X[], int Y[]) {
    OPTM;
    n = N;
    FOR(i,0,n) {
        x[i] = X[i];
        y[i] = Y[i];
    }
    a.insert(0);
    build(1,0,n-1);
    build1(1,0,n-1);
    FOR(i,0,n) if (x[i] > 1) a.insert(i);
    return calc();
}

int updateX(int pos, int val) {	
    update1(1,0,n-1,pos,val);
    x[pos] = val;
    if (val == 1 && a.count(pos) && pos != 0) a.erase(pos);
    if (val > 1) a.insert(pos);
    return calc();
}

int updateY(int pos, int val) {
    update(1,0,n-1,pos,val);
    y[pos] = val;
    return calc();
}

Compilation message

horses.cpp: In function 'int calc()':
horses.cpp:107:20: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
  107 |     int vn = v.size();
      |              ~~~~~~^~
horses.cpp:123:12: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  123 |     return res;
      |            ^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 ms 340 KB Output is correct
6 Correct 1 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 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 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

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 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 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 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 1 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 3 ms 340 KB Output is correct
24 Correct 4 ms 340 KB Output is correct
25 Correct 3 ms 468 KB Output is correct
26 Correct 3 ms 340 KB Output is correct
27 Correct 4 ms 340 KB Output is correct
28 Correct 3 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 3 ms 340 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 474 ms 52996 KB Output is correct
2 Correct 584 ms 53028 KB Output is correct
3 Correct 548 ms 52940 KB Output is correct
4 Correct 648 ms 52920 KB Output is correct

Subtask #4
23.0 / 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 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 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 1 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 1 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 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 4 ms 340 KB Output is correct
25 Correct 5 ms 340 KB Output is correct
26 Correct 3 ms 340 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 3 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 86 ms 28668 KB Output is correct
34 Correct 72 ms 28616 KB Output is correct
35 Correct 224 ms 52088 KB Output is correct
36 Correct 209 ms 51992 KB Output is correct
37 Correct 75 ms 28620 KB Output is correct
38 Correct 127 ms 40604 KB Output is correct
39 Correct 40 ms 28620 KB Output is correct
40 Correct 197 ms 52044 KB Output is correct
41 Correct 49 ms 28544 KB Output is correct
42 Correct 65 ms 30640 KB Output is correct
43 Correct 173 ms 58292 KB Output is correct
44 Correct 169 ms 58240 KB Output is correct

Subtask #5
23.0 / 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 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 0 ms 340 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 1 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 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 3 ms 340 KB Output is correct
24 Correct 3 ms 340 KB Output is correct
25 Correct 3 ms 460 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 3 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 4 ms 464 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 3 ms 340 KB Output is correct
33 Correct 520 ms 52868 KB Output is correct
34 Correct 566 ms 52884 KB Output is correct
35 Correct 559 ms 53000 KB Output is correct
36 Correct 647 ms 53056 KB Output is correct
37 Correct 95 ms 28592 KB Output is correct
38 Correct 72 ms 28636 KB Output is correct
39 Correct 203 ms 52032 KB Output is correct
40 Correct 199 ms 52012 KB Output is correct
41 Correct 77 ms 28652 KB Output is correct
42 Correct 129 ms 40484 KB Output is correct
43 Correct 37 ms 28420 KB Output is correct
44 Correct 192 ms 52084 KB Output is correct
45 Correct 52 ms 28556 KB Output is correct
46 Correct 68 ms 30608 KB Output is correct
47 Correct 167 ms 58284 KB Output is correct
48 Correct 165 ms 58400 KB Output is correct
49 Correct 527 ms 35724 KB Output is correct
50 Correct 398 ms 35604 KB Output is correct
51 Correct 543 ms 64852 KB Output is correct
52 Correct 532 ms 64224 KB Output is correct
53 Correct 484 ms 33816 KB Output is correct
54 Correct 483 ms 47432 KB Output is correct
55 Correct 134 ms 31664 KB Output is correct
56 Correct 536 ms 59732 KB Output is correct
57 Correct 295 ms 32144 KB Output is correct
58 Correct 390 ms 32648 KB Output is correct
59 Correct 169 ms 58308 KB Output is correct