Submission #951570

#	Time	Username	Problem	Language	Result	Execution time	Memory
951570		Esgeer	Wall (IOI14_wall)	C++17	24 / 100	647 ms	29708 KiB

wall

#ifndef Local
    #pragma GCC optimize("O3,unroll-loops")
#endif
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <unistd.h>
using namespace __gnu_pbds;
template <class T>
using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
//#define int long long
#define vi vector<int>
#define vvi vector<vi>
#define pii pair<int, int>
#define vpi vector<pii>
#define vvpi vector<vpi>
#define vb vector<bool>
#define vvb vector<vb>
#define endl '\n'
#define sp << " " <<
#define F(i, s, n) for(int i = s; i < n; i++)
#define pb push_back
#define fi first
#define se second

int mod = 998244353;
int inf = 1e9;
const int N = 5e5+5;

#include "wall.h"

struct Node {
    int mn, mx;
};

struct Update {
    int mn, mx, last;
};

Node merge(Node a, Node b) {
    return {-inf, inf};
}
Update merge(Update a, Update b) {
    Update c = {max(a.mn, b.mn), min(a.mx, b.mx), b.last};
    if(b.last == 2) c.last = a.last;
    if(c.mn > c.mx) {
        if(c.last) c.mn = c.mx;
        else c.mx = c.mn;
    }
    return c;
}
Node merge(Node a, Update b) {
    Node c = {max(a.mn, b.mn), min(a.mx, b.mx)};
    if(c.mn > c.mx) {
        if(b.last) c.mn = c.mx;
        else c.mx = c.mn;
    }
    return c;
}
Node t[4*N];
Update lazy[4*N];
int a[N];

void push(int node, int l, int r) {
    t[node] = merge(t[node], lazy[node]);
    if(l != r) {
        lazy[node*2+1] = merge(lazy[node*2+1], lazy[node]);
        lazy[node*2+2] = merge(lazy[node*2+2], lazy[node]);
    }
    lazy[node] = {-inf, inf, 2};
}

void build(int node, int l, int r) {
    lazy[node] = {-inf, inf, 2};
    if(l == r) {
        t[node] = {-inf, inf};
        return;
    }
    int mid = (l + r) >> 1;
    build(node*2+1, l, mid);
    build(node*2+2, mid+1, r);
}

void update(int node, int l, int r, int L, int R, int a, int b) {
    push(node, l, r);
    if(l > R || r < L) return;
    if(l >= L && r <= R) {
        if(b == 0) lazy[node] = {a, inf, 0};
        else lazy[node] = {-inf, a, 1};
        push(node, l, r);
        return;
    }
    int mid = (l + r) >> 1;
    update(node*2+1, l, mid, L, R, a, b);
    update(node*2+2, mid+1, r, L, R, a, b);
}
Node query(int node, int l, int r, int idx) {
    push(node, l, r);
    if(l > idx || r < idx) return {-inf, inf};
    if(l == r) {
        return t[node];
    }
    int mid = (l + r) >> 1;
    if(idx <= mid) return query(node*2+1, l, mid, idx);
    else return query(node*2+2, mid+1, r, idx);
}

void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]) {
    build(0, 0, n-1);
    F(i, 0, k) {
        if(op[i] == 1) {
            update(0, 0, n-1, left[i], right[i], height[i], 0);
        } else {
            update(0, 0, n-1, left[i], right[i], height[i], 1);
        }
    }
    F(i, 0, n) {
        Node q = query(0, 0, n-1, i);
        finalHeight[i] = min(max(q.mn, 0), q.mx);
    }
}
/*
void solve() {
    int op[] = {1, 2, 2, 1, 1, 2};
    int left[] = {1, 4, 3, 0, 2, 6};
    int right[] = {8, 9, 6, 5, 2, 7};
    int heights[] = {4, 1, 5, 3, 5, 0};
    int res[6];
    buildWall(10, 6, op, left, right, heights, res);
    F(i, 0, 10) cout << res[i] << " ";
    cout << endl;
}
 
void setIO() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    #ifdef Local
        freopen("local.in", "r", stdin);
        freopen("local.out", "w", stdout);
    #else 
        // freopen("poetry.in","r",stdin);
        // freopen("poetry.out","w",stdout);
    #endif
}
signed main() {
    setIO();
    int t = 1;
    //cin >> t;
    while(t--) solve();
}*/

• Subtask 1: 0 / 8
• Subtask 2: 24 / 24
• Subtask 3: 0 / 29
• Subtask 4: 0 / 39