Submission #831588

#	Time	Username	Problem	Language	Result	Execution time	Memory
831588		otarius	Wall (IOI14_wall)	C++17	100 / 100	793 ms	114964 KiB

wall

#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <cstring>
#include <queue>
#include <map>
#include <cmath>
#include <iomanip>
#include <climits>
using namespace std;

#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair <int, int>
#define ull unsigned long long

// #define int long long
// #define int unsigned long long

const ll inf = 1e9 + 7;
const ll weirdMod = 998244353;

int n, k;
struct node {
    int mn = INT_MAX, mx = 0;
}; vector<node> lazy;
void modify(node &a, node b) {
    if (b.mn < a.mx) {
        a.mx = b.mn;
        a.mn = b.mn;
    } else if (b.mx > a.mn) {
        a.mx = b.mx;
        a.mn = b.mx;
    } else {
        a.mx = max(a.mx, b.mx);
        a.mn = min(a.mn, b.mn);
    }
}
void propagate(int v) {
    modify(lazy[2 * v], lazy[v]);
    modify(lazy[2 * v + 1], lazy[v]);
    lazy[v].mn = INT_MAX; lazy[v].mx = 0;
}
void update(int v, int tl, int tr, int l, int r, node u) {
    if (r < tl || tr < l)
        return;
    if (l <= tl && tr <= r) {
        modify(lazy[v], u);
        return;
    } if (tl != tr)
        propagate(v);
    int tm = (tl + tr) / 2;
    update(2 * v, tl, tm, l, min(r, tm), u);
    update(2 * v + 1, tm + 1, tr, max(l, tm + 1), r, u);
}
void adding(int l, int r, int h) {
    node v = *new node();
    v.mx = h; v.mn = INT_MAX;
    update(1, 1, n, l, r, v);
}
void removing(int l, int r, int h) {
    node v = *new node();
    v.mn = h; v.mx = 0;
    update(1, 1, n, l, r, v);
}
int getval(int v, int tl, int tr, int pos) {
    if (tl == tr)
        return lazy[v].mx;
    propagate(v);
    int tm = (tl + tr) / 2;
    if (pos <= tm) return getval(2 * v, tl, tm, pos);
    else return getval(2 * v + 1, tm + 1, tr, pos);
}
void buildWall(int N, int K, int op[], int left[], int right[], int height[], int finalHeight[]) {
    n = N; k = K;
    lazy.resize(4 * n);
    for (int i = 0; i < k; i++) {
        if (op[i] == 1) adding(left[i] + 1, right[i] + 1, height[i]);
        else removing(left[i] + 1, right[i] + 1, height[i]);
    } for (int i = 0; i < n; i++)
        finalHeight[i] = getval(1, 1, n, i + 1);
}

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