Submission #1043421

#	Time	Username	Problem	Language	Result	Execution time	Memory
1043421		deera	Rail (IOI14_rail)	C++14	Compilation error	0 ms	0 KiB

rail

// ioi 2014
// Day 2: Wall
#include <bits/stdc++.h>
using namespace std;

// {low, high}
vector<vector<int>> tree;

struct Op {
    int t, v;
};

void laze(int x, Op op) {
    if (op.t == 1) {
        tree[x][0] = max(tree[x][0], op.v);
        tree[x][1] = max(tree[x][0], tree[x][1]);
    } else {
        tree[x][0] = min(tree[x][0], tree[x][1]);
        tree[x][1] = min(tree[x][1], op.v);
    }
}

void push(int x, int l, int r) {
    if (l == r) return;

    l = x * 2;
    r = l + 1;
    laze(l, {1, tree[x][0]});
    laze(l, {2, tree[x][1]});
    laze(r, {1, tree[x][0]});
    laze(r, {2, tree[x][1]});

    tree[x] = {0, INT_MAX};
}

void output(int x, int l, int r, int results[]) {
    if (l == r) {
        results[l] = tree[x][0];
        return;
    }

    push(x, l, r);

    int m = (l + r) / 2;

    output(x * 2, l, m, results);
    output(x * 2 + 1, m + 1, r, results);
}

void update(int x, int l, int r, int a, int b, Op op) {
    if (r < a || b < l) return;
    if (a <= l && r <= b) {
        laze(x, op);
    } else {
        push(x, l, r);
        
        int m = (l + r) / 2;
        update(x * 2, l, m, a, b, op);
        update(x * 2 + 1, m + 1, r, a, b, op);
    }
}

void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
    // // subtask 1
    // if (n <= 10000 && k <= 5000) {
    //     for (int i = 0; i < k; i++) {
    //         if (op[i] == 1) {
    //             for (int j = left[i]; j <= right[i]; j++)
    //                 finalHeight[j] = max(finalHeight[j], height[i]);
    //         } else {
    //             for (int j = left[i]; j <= right[i]; j++)
    //                 finalHeight[j] = min(finalHeight[j], height[i]);
    //         }
    //     }
    //     return;
    // }

    tree.resize(4 * n, {0, INT_MAX});
    for(int i = 0; i < k; i++) {
        update(1, 0, n - 1, left[i], right[i], {op[i], height[i]});
    }

    output(1, 0, n - 1, finalHeight);
    
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccyT4IQi.o: in function `main':
grader.cpp:(.text.startup+0x2d9): undefined reference to `findLocation'
collect2: error: ld returned 1 exit status