Harryxun/sft_time huggingface dataset:
### BUGGY CODE ###

N = int(input())

a = list(map(int,input().split()))

#count = 0
#numdict = {}

number = 1
for i in range(N):
    print(a.index(i+1) + 1)


### FIXED CODE ###


N = int(input())

a = list(map(int,input().split()))
b = list(range(N))


dict_a = dict(zip(a,b))

for i in range(1,N+1):
    print(dict_a[i]+1,end=' ')
### BUGGY CODE ###

N, M = map(int, input().split())
A = list(map(int, input().split()))
num = [0, 2, 5, 5, 4, 5, 6, 3, 7, 6]
B = [(i, num[i]) for i in A]
ans = {}
for i in range(N + 1):
    x = '0'
    for j, k in B:
        if i - k < 0:
            continue
        if i == k:
            x = str(max(int(x), int(j)))
            continue
        an = ans[i - k]
        if an == '0':
            continue
        if str(j) > an[0]:
            y = str(j) + an
        else:
            y = an + str(j)
        x = str(max(int(x), int(y)))
    ans[i] = x
print(ans[N])

### FIXED CODE ###

N, M = map(int, input().split())
A = list(map(int, input().split()))
num = [2, 5, 5, 4, 5, 6, 3, 7, 6]
ans = {}
for i in range(N + 1):
    x = 0
    for j in A:
        k = num[j - 1]
        if i - k < 0:
            continue
        if i == k:
            x = max(x, j)
            continue
        an = ans[i - k]
        if an == 0:
            continue
        x = max(x, an * 10 + j)
    ans[i] = x
print(ans[N])
### BUGGY CODE ###

# cook your dish here
def dijkstra_back(s,t,n,w,cost):
    #sからtへの最短経路の経路復元
    prev = [s] * n #最短経路の直前の頂点
    d = [float("inf")] * n
    used = [False] * n
    d[s] = 0
    
    while True:
        v = -1
        for i in range(n):
            if (not used[i]) and (v == -1):
               v = i
            elif (not used[i]) and d[i] < d[v]:
                v = i
        if v == -1:
               break
        used[v] = True
        
        for i in range(n):
            if d[i] > d[v] + cost[v][i]: 
                d[i] = d[v] + cost[v][i]
                prev[i] = v
        
    path = [t]
    while prev[t] != s:
        path.append(prev[t])
        prev[t] = prev[prev[t]]
    path.append(s)
    path = path[::-1]
    return path

################################
n,w = map(int,input().split()) #n:頂点数　w:辺の数

cost = [[float("inf") for i in range(n)] for i in range(n)] 
#cost[u][v] : 辺uvのコスト(存在しないときはinf この場合は10**10)
for i in range(w):
    x,y,z = map(int,input().split())
    cost[x-1][y-1] = z
    cost[y-1][x-1] = z

check = [[0 for i in range(n)] for j in range(n)]

for i in range(n):
    for j in range(i+1,n):
        tmp = dijkstra_back(i,j,n,w,cost)
        #print(tmp)
        for k in range(len(tmp)-1):
            #print(tmp[k],tmp[k+1])
            check[min(tmp[k],tmp[k+1])][max(tmp[k],tmp[k+1])] = 1

#print(check)

#exit()

print(w - sum(map(sum, check)))

#print(dijkstra_back(0,1,n,w,cost))

### FIXED CODE ###

# cook your dish here
def dijkstra_back(s,t,n,w,cost):
    #sからtへの最短経路の経路復元
    prev = [s] * n #最短経路の直前の頂点
    d = [float("inf")] * n
    used = [False] * n
    d[s] = 0
    
    while True:
        v = -1
        for i in range(n):
            if (not used[i]) and (v == -1):
               v = i
            elif (not used[i]) and d[i] < d[v]:
                v = i
        if v == -1:
               break
        used[v] = True
        
        for i in range(n):
            if d[i] > d[v] + cost[v][i]: 
                d[i] = d[v] + cost[v][i]
                prev[i] = v
        
    path = [t]
    while prev[t] != s:
        path.append(prev[t])
        prev[t] = prev[prev[t]]
    path.append(s)
    path = path[::-1]
    return path

################################
n,w = map(int,input().split()) #n:頂点数　w:辺の数

cost = [[float("inf") for i in range(n)] for i in range(n)] 
#cost[u][v] : 辺uvのコスト(存在しないときはinf この場合は10**10)
for i in range(w):
    x,y,z = map(int,input().split())
    cost[x-1][y-1] = z
    cost[y-1][x-1] = z

check = [[0 for i in range(n)] for j in range(n)]

for i in range(n):
    for j in range(i+1,n):
        tmp = dijkstra_back(i,j,n,w,cost)
        #print(tmp)
        for k in range(len(tmp)-1):
            #print(tmp[k],tmp[k+1])
            check[min(tmp[k],tmp[k+1])][max(tmp[k],tmp[k+1])] = 1

#print(check)

#exit()

print(w - sum(map(sum, check)))

#print(dijkstra_back(0,1,n,w,cost))
### BUGGY CODE ###

import sys
from itertools import combinations
from collections import Counter

N, X, Y = map(int, sys.stdin.readline().rstrip().split())

nodes = list(range(1, N + 1))
distance_counter = Counter()
a = Y - X - 1
p = (Y - X) // 2 + X
for i, j in combinations(nodes, 2):
    if j - i == 1:
        distance = 1
        distance_counter[distance] += 1
        continue
    if i <= X:
        if j < Y:
            jtoX = min(Y - j + 1, j - X)
            distance = X - i + jtoX
        else:
            distance = j - i - a
    else:
        if j < Y:
            d1 = j - i
            d2 = i - X + Y - j + 1
            distance = min(d1, d2)
        else:
            itoY = min(i - X + 1, Y - i)
            distance = j - Y + itoY
    distance_counter[distance] += 1

for k in range(1, N):
    if k == 1:
        print(N)
    else:
        print(distance_counter.get(k, 0))


### FIXED CODE ###

import sys

N, X, Y = map(int, sys.stdin.readline().rstrip().split())

nodes = list(range(1, N + 1))
ans = [0] * N
for i in range(1, N):
    for j in range(i + 2, N + 1):
        distance = min(abs(X - i) + abs(Y - j) + 1, j - i)
        ans[distance] += 1

for k in range(1, N):
    if k == 1:
        print(N)
    else:
        print(ans[k])
### BUGGY CODE ###

n, k = map(int, input().split())
nums = list(map(int, input().split()))

sum_max = max([sum(nums[i:i+k]) for i in range(n-k+1)])

print((sum_max +k)/2)


### FIXED CODE ###

n, k = map(int, input().split())
nums = list(map(int, input().split()))
 
sum_max = sum(nums[:k])
temp = sum_max
for i in range(k,n):
  temp -= nums[i-k]
  temp += nums[i]
  sum_max = max(temp, sum_max)
print((sum_max +k)/2)
### BUGGY CODE ###

#!/usr/bin/env python3

import sys
import math
from bisect import bisect_right as br
from bisect import bisect_left as bl
sys.setrecursionlimit(2147483647)
from heapq import heappush, heappop,heappushpop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
from itertools import permutations
mod = 10**9 + 7
inf = float('inf')
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))

H, W, k = LI()
x1, y1, x2, y2 = LI()
maze = [input() for _ in range(H)]
dp = [[10**10] * W for _ in range(H)]
dx, dy = [0, 1, 0, -1], [1, 0, -1, 0]
que = deque()
que.append((x1-1, y1-1))
dp[x1-1][y1-1] = 0
while que:
    y, x = que.popleft()
    dist = dp[y][x]
    if y == x2 - 1 and x == y2 - 1:
        print(dist)
        quit()
    for i in range(4):
        dy_, dx_ = dy[i], dx[i]
        ny, nx = y, x
        for _ in range(1, k+1):
            ny, nx = ny + dy_, nx + dx_ 
            if 0 <= ny < H and 0 <= nx < W:
                if maze[ny][nx] == '@':
                    break
                if dist + 1 < dp[ny][nx]:
                    dp[ny][nx] = dist + 1
                    que.append((ny, nx))

print(-1)


            
    


### FIXED CODE ###

#!/usr/bin/env python3

import sys
import math
from bisect import bisect_right as br
from bisect import bisect_left as bl
sys.setrecursionlimit(2147483647)
from heapq import heappush, heappop,heappushpop
from collections import defaultdict
from itertools import accumulate
from collections import Counter
from collections import deque
from operator import itemgetter
from itertools import permutations
mod = 10**9 + 7
inf = float('inf')
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))

H, W, k = LI()
x1, y1, x2, y2 = LI()
maze = [input() for _ in range(H)]
dp = [[10**10] * W for _ in range(H)]
dx, dy = [0, 1, 0, -1], [1, 0, -1, 0]
que = deque()
que.append((x1-1, y1-1))
dp[x1-1][y1-1] = 0
while que:
    y, x = que.popleft()
    dist = dp[y][x]
    if y == x2 - 1 and x == y2 - 1:
        print(dist)
        quit()
    for i in range(4):
        dy_, dx_ = dy[i], dx[i]
        ny, nx = y, x
        for _ in range(1, k+1):
            ny, nx = ny + dy_, nx + dx_ 
            if 0 <= ny < H and 0 <= nx < W:
                if maze[ny][nx] == '@':
                    break
                if dist + 1 < dp[ny][nx]:
                    dp[ny][nx] = dist + 1
                    que.append((ny, nx))
                if dist + 1 > dp[ny][nx]:
                    break
            else:
                break
print(-1)
### BUGGY CODE ###

from itertools import combinations

N = int(input())
a = list(map(int, input().split()))

c = {}
for e in a:
    c.setdefault(e, 0)
    c[e] += 1

t = {}
for x, y in combinations(a, 2):
    i = x
    j = y
    t[i] = 1
    t.setdefault(j, 0)
    t[j] += 1
    for _ in range(N - 2):
        k = i ^ j
        t.setdefault(k, 0)
        t[k] += 1
        c.setdefault(k, 0)
        if t[k] > c[k]:
            j = -1
            break
        i, j = j, k
    if j ^ x == y:
        print('Yes')
        exit()
print('No')


### FIXED CODE ###

from itertools import product

N = int(input())
a = list(map(int, input().split()))

c = {}
for e in a:
    c.setdefault(e, 0)
    c[e] += 1

if len(set(c)) > 3:
    print('No')
    exit()

t = {}
for x, y in product(set(c), repeat=2):
    i = x
    j = y
    t[i] = 1
    if t[i] > c[i]:
        continue
    t.setdefault(j, 0)
    t[j] += 1
    if t[j] > c[j]:
        continue
    for _ in range(N - 2):
        k = i ^ j
        t.setdefault(k, 0)
        t[k] += 1
        c.setdefault(k, 0)
        if t[k] > c[k]:
            j = -1
            break
        i, j = j, k
    if j ^ x == y:
        print('Yes')
        exit()
print('No')
### BUGGY CODE ###

from sys import stdin

def fun():
    n = (int(i) for i in input().split())

    l = [int(x) for x in stdin.readline().rstrip().split()]

    l.sort()

    while 1 < len(l):
        for i in range(1, len(l)):
            if l[i]%l[0] == 0:
                l[i] = l[0]
            elif l[i] - l[i-1] == 1:
                print(1)
                return
            else:
                l[i] = l[i]%l[0]
        #l = [e for e in l if e != 0]
        l = list(set(l))
        #l.sort()

        if l[0]==1:
            print(1)
            return

    print(l[0])
    return

if __name__ == '__main__':
    fun()


### FIXED CODE ###

from sys import stdin

def fun():
    n = (int(i) for i in input().split())

    l = [int(x) for x in stdin.readline().rstrip().split()]

    l = list(set(l))
    l.sort()

    while 1 < len(l):
        k = len(l)
        for i in range(1, k):
            if l[k-i]%l[0] == 0:
                l.pop(k-i)
            elif l[k-i] - l[k-i-1] == 1:
                print(1)
                return
            else:
                l[k-i] = l[k-i]%l[0]
        #l = [e for e in l if e != 0]
        l = list(set(l))
        l.sort()

        if l[0]==1:
            print(1)
            return

    print(l[0])
    return

if __name__ == '__main__':
    fun()
### BUGGY CODE ###

## dijkstraで解く
import heapq

H, W = map(int, input().split())
ch, cw = map(int, input().split())
dh_, dw_ = map(int, input().split())
fs = [input() for i in range(H)]

INF = float("inf")
N = 10**4
dps = [[INF]*W for i in range(H)]
dps[ch-1][cw-1] = 0
q = []
heapq.heapify(q)
heapq.heappush(q,(0, (ch-1)*N+(cw-1)))
while q:
    cnt, n  = heapq.heappop(q)
    h,w = divmod(n, N)
    if cnt > dps[h][w]:continue
    dps[h][w] = cnt
    # 歩いた
    for dh in range(-2,3):
        for dw in range(-2,3):            
            hn = h + dh
            wn = w + dw
            if not 0 <= wn < W: continue
            if not 0 <= hn < H: continue
            if fs[hn][wn] == "#": continue
            if dps[hn][wn] < INF:continue
            if abs(dh) + abs(dw) <= 1:
                heapq.heappush(q, (cnt, hn*N+wn))
            else:
                heapq.heappush(q, (cnt+1, hn*N+wn))

ans = dps[dh_-1][dw_-1]
print(ans if ans != INF else -1)


### FIXED CODE ###

from collections import deque
H, W = map(int, input().split())
ch, cw = map(int, input().split())
dh_, dw_ = map(int, input().split())

fs = []
for i in range(H):
    r = list(input())
    fs.append(r)

walks = [(-1,0),(1,0),(0,1),(0,-1)]
magics = []
for i in range(-2,3):
    for j in range(-2,3):
        if i==j==0:continue
        if (i,j) not in walks:
            magics.append((i,j))

INF = 1 << 50
dps = [[INF]*W for i in range(H)]
dps[ch-1][cw-1] = 0
q = deque([])
q.appendleft((ch-1,cw-1,0))
while len(q)>0:
    h,w,cnt = q.popleft()
    if cnt > dps[h][w]:continue
    dps[h][w] = cnt
    for dh, dw in walks:
        hn = h + dh
        wn = w + dw
        if 0<=hn<H and 0<=wn<W:
            if dps[hn][wn] != INF:continue
            if fs[hn][wn] == ".":
                q.appendleft((hn, wn, cnt))
    for dh, dw in magics:
        hn = h + dh
        wn = w + dw
        if 0<=hn<H and 0<=wn<W:
            if dps[hn][wn] != INF:continue
            if fs[hn][wn] == ".":
                q.append((hn, wn, cnt+1))

ans = dps[dh_-1][dw_-1]
print(ans if ans != INF else -1)
### BUGGY CODE ###

n,k=map(int,input().split())
P=[list(map(int,input().split())) for _ in range(n)]
X=sorted(list(map(lambda x:x[0],P)))
Y=sorted(list(map(lambda x:x[1],P)))
s=(abs(X[0]-X[-1])*abs(Y[0]-Y[-1]))
ans=0
for r in range(1,n):
  for l in range(r):
    for u in range(1,n):
      for b in range(u):
        c=0
        for p in P:
          if X[l]<=p[0]<=X[r] and Y[b]<=p[1]<=Y[u]:
            c+=1
        if c>=k:
          s=min(s,abs(X[r]-X[l])*abs(Y[u]-Y[b]))
print(s)

### FIXED CODE ###

n,k=map(int,input().split())
P=[list(map(int,input().split())) for _ in range(n)]
X=sorted(list(map(lambda x:x[0],P)))
Y=sorted(list(map(lambda x:x[1],P)))
s=(X[0]-X[-1])*(Y[0]-Y[-1])
ans=0
for r in range(n-1,0,-1):
  for l in range(r):
    for u in range(n-1,0,-1):
      for b in range(u):
        c=0
        for p in P:
          if X[l]<=p[0]<=X[r] and Y[b]<=p[1]<=Y[u]:
            c+=1
        if c>=k:
          s=min(s,(X[r]-X[l])*(Y[u]-Y[b]))
        else:break
    if u==n-1 and b==0 and c<k:
      break
print(s)
### BUGGY CODE ###

n,m = map(int,input().split())
a = list(map(int,input().split()))

for i in range(0,m):
  a[a.index(max(a))]=a[a.index(max(a))]//2
print(sum(a))

### FIXED CODE ###

import heapq as hq

n,m = map(int,input().split())

A = []
for a in [int(_) for _ in input().split()]:
    hq.heappush(A, -a)

for _ in range(m):
    t = hq.heappop(A)
    hq.heappush(A, t / 2)
print(-sum([int(a) for a in A]))
### BUGGY CODE ###

from collections import defaultdict
H, W, N = map(int, input().split())
square = set()
dot = defaultdict(lambda : 0)
for i in range(N):
    a, b = map(int, input().split())
    a -= 1
    b -= 1
    dot[(a, b)] = 1
    for y in range(a-2, a+1):
        for x in range(b-2, b+1):
            if 0 <= y < H-2 and 0 <= x < W-2:
                square.add((y, x))
ans = [0] * 10
for y, x in square:
    c = 0
    for i in range(y, y+3):
        for j in range(x, x+3):
            c += dot[(i, j)]
    ans[c] += 1
ans[0] += ans[0] + (H-2) * (W-2) - len(square)
for i in ans:
    print(i)


### FIXED CODE ###

import sys
input = sys.stdin.readline
from collections import defaultdict
H, W, N = map(int, input().split())
cnt = defaultdict(lambda : 0)
for i in range(N):
    a, b = map(lambda x: int(x)-1, input().split())
    for y in range(a-2, a+1):
        for x in range(b-2, b+1):
            if 0 <= y < H-2 and 0 <= x < W-2:
                cnt[(y, x)] += 1
ans = [0] * 10
for key in cnt:
    ans[cnt[key]] += 1
ans[0] += ans[0] + (H-2) * (W-2) - len(cnt)
for i in ans:
    print(i)
### BUGGY CODE ###

mod = 10 ** 9 + 7

S = input()

dp = [[0] * 13 for _ in range(len(S) + 1)]
dp[0][0] = 1

for i, s in enumerate(S):
    c = -1 if s == "?" else int(s)
    for j in range(10):
        if c != -1 and c != j:
            continue
        for k in range(13):
            dp[i + 1][(k * 10 + j) % 13] += dp[i][k]
    for j in range(13):
        dp[i + 1][j] %= mod

print(dp[len(S)][5])

### FIXED CODE ###

mod = 10 ** 9 + 7

S = input()

dp = [[0] * 13 for _ in range(len(S) + 1)]
dp[0][0] = 1

for i, s in enumerate(S):
    c = -1 if s == "?" else int(s)
    for j in range(10):
        if c != -1 and c != j:
            continue
        for k in range(13):
            dp[i + 1][(k * 10 + j) % 13] += dp[i][k]
    for j in range(13):
        dp[i + 1][j] %= mod

print(dp[len(S)][5])
### BUGGY CODE ###

import sys
input = lambda: sys.stdin.readline().rstrip()
input_nums = lambda: list(map(int, input().split()))
import itertools as it

def main():
    N = int(input())
    L = input_nums()
    count = 0
    for v in it.combinations(L, 3):
        a, b, c = v
        if a < b + c and b < c + a and c < a + b:
            count += 1
    print(count)


if __name__ == '__main__':
    main()

### FIXED CODE ###

import sys
input = lambda: sys.stdin.readline().rstrip()
input_nums = lambda: list(map(int, input().split()))
from bisect import bisect_left

def main():
    N = int(input())
    L = sorted(input_nums())
    count = 0
    for i in range(N-2):
        a = L[i]
        for j in range(i+1, N-1):
            count += bisect_left(L, a+L[j]) - j - 1
    print(count)

if __name__ == '__main__':
    main()
### BUGGY CODE ###

n = int(input())
s = input()
ans = 1e6
for i in range(len(s)):
    ans = min(ans, s[:i].count('W')+s[i+1:].count('E'))
print(ans)

### FIXED CODE ###

n = int(input())
s = input()
ans_min = s[1:].count('E')
ans = s[1:].count('E')
for i in range(1, len(s)):
    if(s[i] == 'E'):
        ans -= 1   
    if(s[i-1] == 'W'):
        ans += 1
    ans_min = min(ans_min, ans)
print(ans_min)
### BUGGY CODE ###

A,B,C,D = [int(i) for i in input().split()]
list=[]
s=0
for i in range(A,B+1):
    if not i % C ==0 and not i % D ==0:
        s += 1
print(s)


### FIXED CODE ###

import fractions
def lcm(x, y):
    return (x * y) // fractions.gcd(x, y)
abcd = input().split(" ")
a = int(abcd[0])
b = int(abcd[1])
c = int(abcd[2])
d = int(abcd[3])
cd = lcm(c, d)
print(b-a-(b//c-((a-1)//c + 1))-(b//d - ((a-1)//d + 1))+(b//cd-((a-1)//cd + 1)))
### BUGGY CODE ###

# D - We Love ABC

S = input()
N = len(S)
MOD = 10**9 + 7

def find_cumsum(X):
    output = [1] if S[0] == X else [0]    
    for idx in range(1,N):
        if S[idx] == X:
            output.append(output[-1]+1)
        else:
            output.append(output[-1])
    return output

q_count = S.count("?")
A_cumsum = find_cumsum("A")
q_cumsum = find_cumsum("?")
        
# last_b[i][j] : S[j]を末尾の"B"とするABのインデックスのパターンの中で、i個の?を"AB"のために使用したもの
last_b = [[0] for _ in range(3)]
for idx in range(1,N):
    if S[idx] == "B":
        last_b[0].append(A_cumsum[idx-1]) # AB
        last_b[1].append(q_cumsum[idx-1]) # ?B
        last_b[2].append(0)
    elif S[idx] == "?":
        last_b[0].append(0)
        last_b[1].append(A_cumsum[idx-1]) # A?
        last_b[2].append(q_cumsum[idx-1]) # ??
    else:
        for i in [0,1,2]:
            last_b[i].append(0)

last_b_cumsum = [[last_b[0][0]], [last_b[1][0]], [last_b[2][0]]]
for i in range(3):
    for idx in range(1,N):
        last_b_cumsum[i].append((last_b[i][idx] + last_b_cumsum[i][-1]) % MOD)

# last_c[i] : S[i]を末尾の"C"とするABCのパターン数で、しかも?の置き換えも考慮したもの
last_c = [0]*2
for idx in range(2,N):
    n_ABC = 0
    if S[idx] == "C":
        for n_q in range(min(q_count,2)+1):
            n_ABC += last_b_cumsum[n_q][idx-1] * 3**(q_count-n_q)
    elif S[idx] == "?":
        for n_q in range(1, min(q_count,3)+1):
            n_ABC += last_b_cumsum[n_q-1][idx-1] * 3**(q_count-n_q)
    last_c.append(n_ABC % MOD)
        
print(sum(last_c) % MOD)

### FIXED CODE ###

# D - We Love ABC

S = list(input())
MOD = 10**9 + 7

n_possible = 1 # その場所以前の文字列としてあり得るパターン
A = 0 # その場所以前の文字列におけるA数
B = 0
C = 0

for s in S:
    if s == "A":
        A += n_possible
    elif s == "B":
        B += A
    elif s == "C":
        C += B
    else:
        # X = 3*X + Y
        # この場所の？を (AorABorABCの一部に含めない場合) + (AorABorABCの一部に含める場合)
        C = 3*C + B
        B = 3*B + A
        A = 3*A + n_possible
        n_possible *= 3
    n_possible %= MOD
    A %= MOD
    B %= MOD
    C %= MOD
        
print(C)
### BUGGY CODE ###

def main():
  import collections
  import sys
  input = sys.stdin.readline
  n = int(input())
  b = []
  for i in range(n):
    a = int(input())
    b_append = b.append
    b_append(a)

  s = set(b)
  c = collections.Counter(b)
  ans = 0
  for i in range(len(s)):
    if c.most_common()[i][1] % 2 == 0:
      continue
    else:
      ans += 1
    if c.most_common()[i][1] == 1:
      ans += len(s)-1-i
      break
  print(ans)
if __name__ == '__main__':
    main()

### FIXED CODE ###

n = int(input())
a = []
for i in range(n):
  a.append(int(input()))
a.sort()
b = []
for i in range(0,n-1,2):
  if a[i] != a[i+1]:
    b.append(a[i])
    b.append(a[i+1])
  else:
    continue
if n%2 == 1:
  b.append(a[-1])
#print(b)
ans = []
if b != []:
  ans.append(b[0])
  for j in range(1,len(b)-1,2):
    if b[j] != b[j+1]:
      ans.append(b[j])
      ans.append(b[j+1])
  if len(b)%2 == 0:
    ans.append(b[-1])
#print(ans)
if ans == []:
  print(0)
else:
  print(len(ans))
### BUGGY CODE ###

import sys
def I(): return int(sys.stdin.readline())
def LI(): return [int(x) for x in sys.stdin.readline().split()]

N,D,A = LI()

def check(x,M):
    M_ = [[a,b] for a,b in M]
    count = 0
    for i in range(N):
        if M_[i][1] > 0:
            bomb = (M_[i][1]+A-1)//A
            count += bomb
            if count > x:
                return False

            damage = bomb * A
            for j in range(i,N):
                if M_[j][0] <= M_[i][0] + 2*D:
                    M_[j][1] = max(0,M_[j][1] - damage)
                else:
                    break
    return True

def main():
    M = []
    for i in range(N):
        M.append(LI())
    M.sort(key = lambda x: x[0])

    isNG = 0
    isOK = N*((10**9)+A-1)//A

    while(isNG+1 != isOK):
        mid = (isNG+isOK)//2
        if check(mid,M):
            isOK = mid
        else:
            isNG = mid
    print(isOK)

if __name__ == "__main__":
    main()


### FIXED CODE ###

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

def main():
    N,D,A = map(int,readline().split())
    m = map(int,read().split())
    X,H = zip(*sorted(zip(m,m)))
    
    over = [-1]*N
    tmp=0
    for i in range(N):
      while(tmp<N and X[i]+D*2>=X[tmp]):
        tmp += 1
      over[i] = tmp
    reset = [0]*N
    
    ans = 0
    dam = 0
    for i in range(N):
      if i>0:
        reset[i] += reset[i-1]
      hp = H[i]-dam+reset[i]
      if hp > 0:
        bomb = (hp+A-1)//A
        ans += bomb
        dam += bomb * A
        if(over[i]<N):
          reset[over[i]] += bomb * A

    print(ans)

if __name__ == "__main__":
    main()
### BUGGY CODE ###

n,m=map(int,input().split())
a=[]
for i in range(m):
  a.append(int(input()))
dp=[1]
if 1 in a:
  dp.append(0)
else:
  dp.append(1)
for i in range(2,n+1):
  if i in a:
    dp.append(0)
  else:
    dp.append(dp[-1]+dp[-2])
print(dp[-1]%1000000007)


### FIXED CODE ###

n,m=map(int,input().split())
a=set([int(input()) for i in range(m)])
mod=1000000007
dp=[1,1]
if 1 in a:
  dp[1]=0
for i in range(2,n+1):
  if i in a:
    dp.append(0)
  else:
    dp.append((dp[-1]+dp[-2])%mod)
print(dp[-1]%mod)
### BUGGY CODE ###

n=int(input())
ans=0
for i in range(n+1):
    if set(str(i))=={"3","5","7"}:
        ans+=1
print(ans)

### FIXED CODE ###

n=int(input())
d=["3","5","7"]
ans=[]
ans+=d
while d:
    a=d.pop(0)
    if len(a)<9:
        for i in "357":
            d+=[i+a]
            ans+=[i+a]
ans=list(map(int,ans))
ans.sort()
print(sum(i<=n for i in ans if len(set(str(i)))==3))