Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

N, Q = (int(i) for i in input().split())
L = [0] * 2 * N
P = {}
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, X, 1)
    L[2 * i + 1] = (T-X, X, 0)

L.sort(reverse=True)

Xs = set([])
for i in range(Q):
    D = int(input())
    ans = 0
    while True:
        if not L:
            break
        tp = L.pop()
        t = tp[0]
        if t <= D:
            if tp[2] == 1:
                Xs.add(tp[1])
            else:
                Xs.remove(tp[1])
        else:
            L.append(tp)
            break
    if Xs:
        print(min(Xs))
    else:
        print("-1")


Fixed submission:
import sys
input = sys.stdin.readline

import heapq
N, Q = (int(i) for i in input().split())
L = [0] * (2 * N + Q)
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, 1, X)
    L[2 * i + 1] = (T-X, -1, X)
for i in range(Q):
    D = int(input())
    L[2 * N + i] = (D, 2, 0)
L.sort()

Xs = set([])
XH = []
heapq.heapify(XH)
for t, f, X in L:
    if f == 1:
        Xs.add(X)
        heapq.heappush(XH, X)
    elif  f == -1:
        Xs.remove(X)
    else:
        if Xs:
            while XH[0] not in Xs:
                X = heapq.heappop(XH)
            print(XH[0])
        else:
            print("-1")

Buggy python submission (verdict: Time Limit Exceeded):
import heapq
N, Q = (int(i) for i in input().split())
L = [0] * (2 * N + Q)
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, X, 1)
    L[2 * i + 1] = (T-X, X, -1)
for i in range(Q):
    D = int(input())
    L[2 * N + i] = (D, 10**9+1, 0)
L.sort()

Xs = set([])
XH = []
heapq.heapify(XH)
for t, X, f in L:
    if f == 1:
        Xs.add(X)
        heapq.heappush(XH, X)
    elif  f == -1:
        Xs.remove(X)
    else:
        if Xs:
            while XH[0] not in Xs:
                X = heapq.heappop(XH)
            print(XH[0])
        else:
            print("-1")

Fixed submission:
import sys
input = sys.stdin.readline

import heapq
N, Q = (int(i) for i in input().split())
L = [0] * (2 * N + Q)
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, 1, X)
    L[2 * i + 1] = (T-X, -1, X)
for i in range(Q):
    D = int(input())
    L[2 * N + i] = (D, 2, 0)
L.sort()

Xs = set([])
XH = []
heapq.heapify(XH)
for t, f, X in L:
    if f == 1:
        Xs.add(X)
        heapq.heappush(XH, X)
    elif  f == -1:
        Xs.remove(X)
    else:
        if Xs:
            while XH[0] not in Xs:
                X = heapq.heappop(XH)
            print(XH[0])
        else:
            print("-1")

Buggy python submission (verdict: Time Limit Exceeded):
import heapq
N, Q = (int(i) for i in input().split())
L = [0] * 2 * N
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, X, 1)
    L[2 * i + 1] = (T-X, X, 0)

L.sort(reverse=True)

Xs = set([])
XH = []
heapq.heapify(XH)
for i in range(Q):
    D = int(input())
    ans = 0
    while True:
        if L:
            t, X, f = L.pop()
            if t <= D:
                if f == 1:
                    Xs.add(X)
                    heapq.heappush(XH, X)
                else:
                    Xs.remove(X)
            else:
                L.append((t, X, f))
                break
        else:
            break
    if Xs:
        while XH[0] not in Xs:
            X = heapq.heappop(XH)
        print(XH[0])
    else:
        print("-1")

Fixed submission:
import sys
input = sys.stdin.readline

import heapq
N, Q = (int(i) for i in input().split())
L = [0] * (2 * N + Q)
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, 1, X)
    L[2 * i + 1] = (T-X, -1, X)
for i in range(Q):
    D = int(input())
    L[2 * N + i] = (D, 2, 0)
L.sort()

Xs = set([])
XH = []
heapq.heapify(XH)
for t, f, X in L:
    if f == 1:
        Xs.add(X)
        heapq.heappush(XH, X)
    elif  f == -1:
        Xs.remove(X)
    else:
        if Xs:
            while XH[0] not in Xs:
                X = heapq.heappop(XH)
            print(XH[0])
        else:
            print("-1")

Buggy python submission (verdict: Runtime Error):
import heapq
N, Q = (int(i) for i in input().split())
L = [0] * 2 * N
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, X, 1)
    L[2 * i + 1] = (T-X, X, 0)

L.sort(reverse=True)

Xs = set([])
XH = []
heapq.heapify(XH)
for i in range(Q):
    D = int(input())
    ans = 0
    while True:
        if L:
            t, X, f = L.pop()
            if t <= D:
                if f == 1:
                    Xs.add(X)
                    heapq.heappush(XH, X)
                else:
                    Xs.remove(X)
            else:
                L.append((t, X, f))
                break
        else:
            break
    if Xs:
        while True:
            X = heapq.heappop(XH)
            if X in Xs:
                print(X)
                break
    else:
        print("-1")

Fixed submission:
import sys
input = sys.stdin.readline

import heapq
N, Q = (int(i) for i in input().split())
L = [0] * (2 * N + Q)
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, 1, X)
    L[2 * i + 1] = (T-X, -1, X)
for i in range(Q):
    D = int(input())
    L[2 * N + i] = (D, 2, 0)
L.sort()

Xs = set([])
XH = []
heapq.heapify(XH)
for t, f, X in L:
    if f == 1:
        Xs.add(X)
        heapq.heappush(XH, X)
    elif  f == -1:
        Xs.remove(X)
    else:
        if Xs:
            while XH[0] not in Xs:
                X = heapq.heappop(XH)
            print(XH[0])
        else:
            print("-1")

Buggy python submission (verdict: Time Limit Exceeded):
N, Q = (int(i) for i in input().split())
L = [0] * 2 * N
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, X, 1)
    L[2 * i + 1] = (T-X, X, 0)

L.sort(reverse=True)

Xs = set([])
for i in range(Q):
    D = int(input())
    ans = 0
    while True:
        if L:
            t, X, f = L.pop()
            if t <= D:
                if f == 1:
                    Xs.add(X)
                else:
                    Xs.remove(X)
            else:
                L.append((t, X, f))
                break
        else:
            break
    if Xs:
        print(min(Xs))
    else:
        print("-1")

Fixed submission:
import sys
input = sys.stdin.readline

import heapq
N, Q = (int(i) for i in input().split())
L = [0] * (2 * N + Q)
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, 1, X)
    L[2 * i + 1] = (T-X, -1, X)
for i in range(Q):
    D = int(input())
    L[2 * N + i] = (D, 2, 0)
L.sort()

Xs = set([])
XH = []
heapq.heapify(XH)
for t, f, X in L:
    if f == 1:
        Xs.add(X)
        heapq.heappush(XH, X)
    elif  f == -1:
        Xs.remove(X)
    else:
        if Xs:
            while XH[0] not in Xs:
                X = heapq.heappop(XH)
            print(XH[0])
        else:
            print("-1")

Buggy python submission (verdict: Time Limit Exceeded):
N, Q = (int(i) for i in input().split())
L = [0] * 2 * N
P = {}
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, X, 1)
    L[2 * i + 1] = (T-X, X, 0)

L.sort(reverse=True)

Xs = set([])
for i in range(Q):
    D = int(input())
    ans = 0
    while True:
        if not L:
            break
        tp = L.pop()
        t = tp[0]
        if t <= D:
            if tp[2] == 1:
                Xs.add(tp[1])
            else:
                Xs.remove(tp[1])
        else:
            L.append(tp)
            break
    if Xs:
        print(min(Xs))
    else:
        print("-1")

Fixed submission:
import sys
input = sys.stdin.readline

import heapq
N, Q = (int(i) for i in input().split())
L = [0] * (2 * N + Q)
for i in range(N):
    S, T, X = (int(i) for i in input().split())
    L[2 * i] = (S-X, 1, X)
    L[2 * i + 1] = (T-X, -1, X)
for i in range(Q):
    D = int(input())
    L[2 * N + i] = (D, 2, 0)
L.sort()

Xs = set([])
XH = []
heapq.heapify(XH)
for t, f, X in L:
    if f == 1:
        Xs.add(X)
        heapq.heappush(XH, X)
    elif  f == -1:
        Xs.remove(X)
    else:
        if Xs:
            while XH[0] not in Xs:
                X = heapq.heappop(XH)
            print(XH[0])
        else:
            print("-1")