Submission #1192663

#	Time	Username	Problem	Language	Result	Execution time	Memory
1192663		GoBananas69	Wall (IOI14_wall)	C++20	Compilation error	0 ms	0 KiB

wall

#include <algorithm>
#include <iostream>
#include <vector>

using namespace std;
typedef long long ll;

vector<int> tree, mx, mn;
vector<bool> has;

void push(int i, int L, int R) {
    if (L == R || !has[i]) return;
    int m = (L + R) / 2;
    int x = 2 * i + 1, y = x + 1;
    has[i] = false;
    has[x] = has[y] = true;
    mn[x] = mx[x] = mn[y] = mx[y] = tree[x] = tree[y] = tree[i];
}

void build(int i, int L, int R) {
    if (L == R) {
        tree[i] = mx[i] = mn[i] = 0;
        has[i] = false;
        return;
    }
    int m = (L + R) / 2;
    int x = 2 * i + 1, y = x + 1;
    build(x, L, m);
    build(y, m + 1, R);
    mx[i] = max(mx[x], mx[y]);
    mn[i] = min(mn[x], mn[y]);
}

void add(int i, int L, int R, int l, int r, int v) {
    if (L == R) {
        tree[i] = max(tree[i], v);
        mn[i] = mx[i] = tree[i];
        has[i] = true;
        return;
    }
    if (mn[i] >= v) return;
    if (L == l && R == r && mx[i] <= v) {
        tree[i] = mn[i] = mx[i] = v;
        has[i] = true;
        return;
    }
    push(i, L, R);
    int m = (L + R) >> 1, x = 2 * i + 1, y = x + 1;
    if (r <= m) {
        add(x, L, m, l, r, v);
    } else if (l > m) {
        add(y, m + 1, R, l, r, v);
    } else {
        add(x, L, m, l, m, v);
        add(y, m + 1, R, m + 1, r, v);
    }
    mx[i] = max(mx[x], mx[y]);
    mn[i] = min(mn[x], mn[y]);
}

void remove(int i, int L, int R, int l, int r, int v) {
    if (L == R) {
        tree[i] = min(tree[i], v);
        mn[i] = mx[i] = tree[i];
        has[i] = true;
        return;
    }
    if (mx[i] <= v) return;
    if (L == l && R == r && mn[i] >= v) {
        tree[i] = mn[i] = mx[i] = v;
        has[i] = true;
        return;
    }
    push(i, L, R);
    int m = (L + R) >> 1, x = 2 * i + 1, y = x + 1;
    if (r <= m) {
        remove(x, L, m, l, r, v);
    } else if (l > m) {
        remove(y, m + 1, R, l, r, v);
    } else {
        remove(x, L, m, l, m, v);
        remove(y, m + 1, R, m + 1, r, v);
    }
    mx[i] = max(mx[x], mx[y]);
    mn[i] = min(mn[x], mn[y]);
}

int query(int i, int L, int R, int p) {
    if (L == R) {
        return tree[i];
    }
    push(i, L, R);
    int m = (L + R) / 2;
    int x = 2 * i + 1, y = x + 1;
    if (p <= m) {
        return query(x, L, m, p);
    } else {
        return query(y, m + 1, R, p);
    }
}

void buildWall(int n, int k, vector<int>& op, vector<int>& l_, vector<int>& r_, vector<int>& h_, vector<int>& res) {
    tree.resize(4 * n + 5, 0);
    mx.resize(4 * n + 5, 0);
    mn.resize(4 * n + 5, 0);
    has.resize(4 * n + 5, false);
    for (int x = 0; x < k; ++x) {
        int q = op[x];
        int l = l_[x], r = r_[x], h = h_[x];
        if (q == 1) {
            add(0, 0, n - 1, l, r, h);
        } else {
            remove(0, 0, n - 1, l, r, h);
        }
    }
    for (int i = 0; i < n; ++i) {
        res[i] = query(0, 0, n - 1, i);
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccOSLCnm.o: in function `main':
grader.cpp:(.text.startup+0x133): undefined reference to `buildWall(int, int, int*, int*, int*, int*, int*)'
collect2: error: ld returned 1 exit status