Submission #1099509

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099509		rahidilbayramli	Wall (IOI14_wall)	C++17	100 / 100	979 ms	69504 KiB

wall

#include "wall.h"
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define ll int
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define pii pair<int, int>
#define pll pair<int, int>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define pb push_back
#define p_b pop_back
#define f first
#define s second
using namespace std;
using namespace __gnu_pbds;
typedef tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const ll sz = 2e6+5;
ll a[sz];
pll segtree[4*sz];
void build(ll v, ll l, ll r)
{
    if(l == r)
        segtree[v] = {0, 0};
    else
    {
        ll mid = (l + r) / 2;
        build(2*v, l, mid);
        build(2*v+1, mid+1, r);
        segtree[v] = {-1, 0};
    }
}
void push1(ll v, ll l, ll r)
{
    if(l != r)
    {
        if(segtree[v].f >= segtree[2*v].s)
            segtree[2*v] = {segtree[v].f, segtree[v].f};
        else    if(segtree[v].s <= segtree[2*v].f)
            segtree[2*v] = {segtree[v].s, segtree[v].s};
        else
            segtree[2*v] = {max(segtree[v].f, segtree[2*v].f), min(segtree[v].s, segtree[2*v].s)};
        if(segtree[v].f >= segtree[2*v+1].s)
            segtree[2*v+1] = {segtree[v].f, segtree[v].f};
        else    if(segtree[v].s <= segtree[2*v+1].f)
            segtree[2*v+1] = {segtree[v].s, segtree[v].s};
        else
            segtree[2*v+1] = {max(segtree[v].f, segtree[2*v+1].f), min(segtree[v].s, segtree[2*v+1].s)};
        segtree[v] = {INT_MIN, INT_MAX};
    }
}
void update1(ll v, ll l, ll r, ll tl, ll tr, ll val)
{
    push1(v, l, r);
    if(l > r || l > tr || r < tl)
        return;
    if(tl <= l && r <= tr)
    {
        if(l == r){
            segtree[v] = {max(val, segtree[v].f), max(val, segtree[v].f)};
            return;
        }
        segtree[v] = {val, INT_MAX};
        push1(v, l, r);
        return;
    }
    ll mid = (l + r) / 2;
    update1(2*v, l, mid, tl, tr, val);
    update1(2*v+1, mid+1, r, tl, tr, val);
}
void update2(ll v, ll l, ll r, ll tl, ll tr, ll val)
{
    push1(v, l, r);
    if(l > r || l > tr || r < tl)
        return;
    if(tl <= l && r <= tr)
    {
        if(l == r){
            segtree[v] = {min(val, segtree[v].f), min(val, segtree[v].f)};
            return;
        }
        segtree[v] = {INT_MIN, val};
        push1(v, l, r);
        return;
    }
    ll mid = (l + r) / 2;
    update2(2*v, l, mid, tl, tr, val);
    update2(2*v+1, mid+1, r, tl, tr, val);
}
pll findres(ll v, ll l, ll r, ll tl, ll tr)
{
    if(l > r || l > tr || r < tl)
        return {INT_MIN, INT_MAX};
    push1(v, l, r);
    if(tl <= l && r <= tr)
        return segtree[v];
    ll mid = (l + r) / 2;
    pll lans = findres(2*v, l, mid, tl, tr);
    pll rans = findres(2*v+1, mid+1, r, tl, tr);
    return {max(lans.f, rans.f), 0};
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
    build(1, 1, n);
    for(int i = 0; i < k; i++)
    {
        if(op[i] == 1)
            update1(1, 1, n, left[i]+1, right[i]+1, height[i]);
        else
            update2(1, 1, n, left[i]+1, right[i]+1, height[i]);
    }
    for(int i = 0; i < n; i++)
        finalHeight[i] = findres(1, 1, n, i+1, i+1).f;
}

• Subtask 1: 8 / 8
• Subtask 2: 24 / 24
• Subtask 3: 29 / 29
• Subtask 4: 39 / 39