Submission #990157

#	Time	Username	Problem	Language	Result	Execution time	Memory
990157		andrew	Wall (IOI14_wall)	C++17	Compilation error	0 ms	0 KiB

wall

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

struct node {
    bool need_update = 0;
    int l = -1e9, r = 1e9;    
    node *left = nullptr, *right = nullptr;
};

void build(node *v, int l, int r) {
    if (l == r) {
        v -> l = v -> r = 0;
    } else {
        int m = (l + r) >> 1;
        v->left = new node();
        v->right = new node();

        build(v->left, l, m);
        build(v->right, m + 1, r);
    }
}

void update(node *v, int tl, int tr, int l, int r, int op, int val) {
    if (l > r) return;
    if (tl == l && tr == r) {
        if (op == 1) {
            v->l = max(v->l, val);
            v->r = max(v->r, val);
            v->need_update = 1;
        } else {
            v->l = min(v->l, val);
            v->r = min(v->r, val);
            v->need_update = 1;
        }
        return;
    }
    int tm = (tl + tr) >> 1;
    if (v->need_update) {
        v->left->l = max(v->left->l, v->l);
        v->left->r = max(v->left->r, v->l);
        v->left->l = min(v->left->l, v->r);
        v->left->r = min(v->left->r, v->r);
        v->left->need_update = 1;

        v->right->l = max(v->right->l, v->l);
        v->right->r = max(v->right->r, v->l);
        v->right->l = min(v->right->l, v->r);
        v->right->r = min(v->right->r, v->r);

        v->right->need_update = 1;

        v->need_update = 0;
        v->l = -1e9;
        v->r = 1e9;
    }
    update(v->left, tl, tm, l, min(r, tm), op, val);
    update(v->right, tm + 1, tr, max(l, tm + 1), r, op, val);
}

void solve(node *v, int tl, int tr) {
    if (tl == tr) {
        cout << v->l << '\n';
    } else {
        int tm = (tl + tr) >> 1;
        if (v->need_update) {
            v->left->l = max(v->left->l, v->l);
            v->left->r = max(v->left->r, v->l);
            v->left->l = min(v->left->l, v->r);
            v->left->r = min(v->left->r, v->r);
            v->left->need_update = 1;

            v->right->l = max(v->right->l, v->l);
            v->right->r = max(v->right->r, v->l);
            v->right->l = min(v->right->l, v->r);
            v->right->r = min(v->right->r, v->r);

            v->need_update = 0;
        }
        solve(v->left, tl, tm);
        solve(v->right, tm + 1, tr);
    }
}

int main(){
    ios_base :: sync_with_stdio(0);
    cin.tie(0);    

    int n, q;
    cin >> n >> q;

    node *root = new node();
    build(root, 0, n - 1);

    for (int i = 0; i < q; i++) {
        int op, l, r, x;
        cin >> op >> l >> r >> x;
        update(root, 0, n - 1, l, r, op, x);
    }

    solve(root, 0, n - 1);

    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccATfTT9.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccpyYmfc.o:wall.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccATfTT9.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