human
Solve in Python:
You are playing a computer game, where you lead a party of $m$ soldiers. Each soldier is characterised by his agility $a_i$.

The level you are trying to get through can be represented as a straight line segment from point $0$ (where you and your squad is initially located) to point $n + 1$ (where the boss is located).

The level is filled with $k$ traps. Each trap is represented by three numbers $l_i$, $r_i$ and $d_i$. $l_i$ is the location of the trap, and $d_i$ is the danger level of the trap: whenever a soldier with agility lower than $d_i$ steps on a trap (that is, moves to the point $l_i$), he gets instantly killed. Fortunately, you can disarm traps: if you move to the point $r_i$, you disarm this trap, and it no longer poses any danger to your soldiers. Traps don't affect you, only your soldiers.

You have $t$ seconds to complete the level — that is, to bring some soldiers from your squad to the boss. Before the level starts, you choose which soldiers will be coming with you, and which soldiers won't be. After that, you have to bring all of the chosen soldiers to the boss. To do so, you may perform the following actions:

  if your location is $x$, you may move to $x + 1$ or $x - 1$. This action consumes one second.
 if your location is $x$ and the location of your squad is $x$, you may move to $x + 1$ or to $x - 1$ with your squad in one second. You may not perform this action if it puts some soldier in danger (i. e. the point your squad is moving into contains a non-disarmed trap with $d_i$ greater than agility of some soldier from the squad). This action consumes one second.
 if your location is $x$ and there is a trap $i$ with $r_i = x$, you may disarm this trap. This action is done instantly (it consumes no time). 

Note that after each action both your coordinate and the coordinate of your squad should be integers.

You have to choose the maximum number of soldiers such that they all can be brought from the point $0$ to the point $n + 1$ (where the boss waits) in no more than $t$...
 ... Give me a the Python program you requested?
assistant
#Here is the Python program you requested.

3

import os
import sys

def main():
    M, N, K, T = read_ints()
    A = read_ints()
    B = [tuple(read_ints()) for _ in range(K)]
    print(solve(M, N, K, T, A, B))

def solve(M, N, K, T, A, B):
    B.sort()

    def seconds(agi):
        traps = [(l, r) for l, r, d in B if d > agi]
        x = 0
        sec = 0
        sw = -1
        for l, r in traps:
            if sw != -1 and sw < l:
                sec += 2 * (sw - x)
                sw = -1

            if sw != -1:
                sw = max(sw, r)
                continue

            sec += l - 1 - x
            x = l - 1
            sw = r

        if sw != -1:
            sec += 2 * (sw - x)

        sec += N + 1 - x
        return sec

    min_agi = min(A)
    max_agi = max(A)

    if seconds(max_agi) > T:
        return 0
    if seconds(min_agi) <= T:
        return len(A)

    lb = min_agi
    ub = max_agi
    while ub - lb > 1:
        agi = (lb + ub) // 2
        if seconds(agi) > T:
            lb = agi
        else:
            ub = agi

    return len([a for a in A if a >= ub])

###############################################################################

DEBUG = 'DEBUG' in os.environ

def inp():
    return sys.stdin.readline().rstrip()

def read_int():
    return int(inp())

def read_ints():
    return [int(e) for e in inp().split()]

def dprint(*value, sep=' ', end='\n'):
    if DEBUG:
        print(*value, sep=sep, end=end)

def __starting_point():
    main()

__starting_point()