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


import sys
from collections import deque
import copy
import math

def get_read_func(fileobject):
    if fileobject == None :
        return raw_input
    else:
        return fileobject.readline


def main():
    if len(sys.argv) > 1:
        f = open(sys.argv[1])
    else:
        f = None
    read_func = get_read_func(f);
    input_raw = read_func().strip().split()
    [S] = [(input_raw[0])]
    input_raw = read_func().strip().split()
    [K] = [int(input_raw[0])]
##    if len(S) >= K:
##        min_s = "zzzzzzz"
##        for i in range(len(S) - K):
##            if S[i : i + K]< min_s:
##                min_s = S[i : i + K]
##        print min_s
##        return
##    else:
    sub_list = set([])
    for i in range(len(S)):
        for j in range(i + 1, len(S) + 1):
            sub_list.add(S[i:j])

    sub_list = list(sub_list)
    sub_list.sort()
    print sub_list[K - 1]


if __name__ == '__main__':
    main()


### FIXED CODE ###


import sys
from collections import deque
import copy
import math

def get_read_func(fileobject):
    if fileobject == None :
        return raw_input
    else:
        return fileobject.readline


def main():
    if len(sys.argv) > 1:
        f = open(sys.argv[1])
    else:
        f = None
    read_func = get_read_func(f);
    input_raw = read_func().strip().split()
    [S] = [(input_raw[0])]
    input_raw = read_func().strip().split()
    [K] = [int(input_raw[0])]
##    if len(S) >= K:
##        min_s = "zzzzzzz"
##        for i in range(len(S) - K):
##            if S[i : i + K]< min_s:
##                min_s = S[i : i + K]
##        print min_s
##        return
##    else:
    sub_list = set([])
    for i in range(len(S)):
        for j in range(i + 1, i + 6):
            sub_list.add(S[i:j])

    sub_list = list(sub_list)
    sub_list.sort()
    print sub_list[K - 1]


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

N,M=list(map(int,input().split()))
ans=set([i for i in range(1,N+1)])
for i in range(M):
    a,b=list(map(int,input().split()))
    tmp=set([i for i in range(a,b+1)])
    ans &=tmp
print(len(ans))

### FIXED CODE ###

N,M=list(map(int,input().split()))
s=1
m=N
for i in range(M):
    a,b=list(map(int,input().split()))
    if s<a:
        s=a
    if m>b:
        m=b
    #ans &=tmp
ans=m-s+1
if ans>0:
    print(ans)
else:
    print(0)
### BUGGY CODE ###

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

a=sorted(a)[::-1]
f=sorted(f)

ok=10**18
ng=-1

import math
def isOK(val,arr,farr,k):
  s=0
  for i in range(len(arr)):
    s+=max(math.ceil(a[i]-val/f[i]),0)
  return s<=k
  
while abs(ok-ng)>1:
  mid=abs(ok+ng)//2
  if isOK(mid,a,f,k):
    ok=mid
  else:
    ng=mid
    
print(ok)

### FIXED CODE ###

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

a=sorted(a)[::-1]
f=sorted(f)

ok=10**18
ng=-1

import math
def isOK(val,arr,farr,k):
  s=0
  for i in range(len(arr)):
    s+=max(math.ceil(a[i]-val/f[i]),0)
  return s<=k
  
while abs(ok-ng)>1:
  mid=abs(ok+ng)//2
  if isOK(mid,a,f,k):
    ok=mid
  else:
    ng=mid
    
print(ok)
### BUGGY CODE ###

n,k=map(int,input().split())
h=list(map(int,input().split()))
c=[0]*n
for i in range(1,n):
    c[i]=min([c[j]+abs(h[i]-h[j]) for j in range(max(0,i-k),i)])
print(c[-1])

### FIXED CODE ###

n,k=map(int,input().split())
h=list(map(int,input().split()))
c=[0]*n
for i in range(1,n):
    c[i]=min([cj+abs(h[i]-hj) for cj,hj in zip(c[max(0,i-k):i],h[max(0,i-k):i])])
print(c[-1])
### BUGGY CODE ###

import sys
sys.setrecursionlimit(10 ** 7)

sr = lambda: sys.stdin.readline().rstrip()
ir = lambda: int(sr())
lr = lambda: list(map(int, sr().split()))

# Nが小さいのでdfs
N, M = lr()
keys = [None] * (M+1) # 1-indexed
for i in range(M):
    a, b = lr()
    c = set(lr())
    keys[i+1] = (a, c)

def dfs(m, fee, open):
    global answer
    if m == M+1:
        if len(open) == N:
            answer = min(answer, fee)
    else:
        dfs(m+1, fee+keys[m][0], open.union(keys[m][1]))
        dfs(m+1, fee, open)

INF = 10 ** 10
answer = INF
dfs(1, 0, set())
print(-1 if answer == INF else answer)
# 38

### FIXED CODE ###

def main():
    N, M = map(int, input().split())
    b_cnt = 2 ** N #箱の数は最大12個
    INF = 10 ** 9
    dp = [INF] * b_cnt
    dp[0] = 0

    for i in range(M):
        a, b = map(int, input().split())
        c = sum([2 ** (int(x)-1) for x in list(input().split())])
        for j in range(b_cnt):
            if dp[j|c] > dp[j] + a:
                dp[j|c] = dp[j] + a

    if dp[-1] == INF:
        print(-1)
    else:
        print(dp[-1])

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

from collections import Counter

S = input()
mods = [0]
num, ten = 0, 1
for n in S[::-1]:
    num += int(n) * ten
    num %= 2019
    mods.append(num)
    ten *= 10

counter = Counter(mods)
ret = 0
for v in counter.values():
    ret += v * (v - 1) // 2
print(ret)

### FIXED CODE ###

from collections import Counter

S = input()
mods = [0]
num, ten = 0, 1
for n in S[::-1]:
    num += int(n) * ten
    num %= 2019
    mods.append(num)
    ten *= 10
    ten %= 2019

counter = Counter(mods)
ret = 0
for v in counter.values():
    ret += v * (v - 1) // 2
print(ret)
### BUGGY CODE ###

from collections import Counter
 
N = int(input())
As = [int(n) for n in input().split()]
 
C = Counter(As)
 
L = [(v * (v - 1) // 2, (v - 1) * (v - 2) // 2, k) for k, v in C.items()]
 
for i in range(N):
    print(sum([y if z == As[i] else x for x, y, z in L]))

### FIXED CODE ###

from collections import Counter

N = int(input())
As = [int(n) for n in input().split()]

C = Counter(As)

ans = sum(v * (v - 1) // 2 for k, v in C.items())
M = [C[a] - 1 for a in As]

for m in M:
    print(ans - m)
### BUGGY CODE ###

while True:
    n,a,b=map(int,raw_input().split())
    if n==a==b==0:break
    count=n
    for i in range(1,n+1):
        x=i
        while x>=0:
            if x%a==0:
                count-=1
                break
            x-=b
    print count

### FIXED CODE ###

while True:
    n,a,b=map(int,raw_input().split())
    if n==a==b==0:break
    L=[True]*(n+1)
    for i in range(a):
        x=b*i
        if x>n:break
        while x<=n:
            L[x]=False
            x+=a
    print L.count(True)
### BUGGY CODE ###

import sys 
def get_string(): return sys.stdin.readline().strip() 
  
string = get_string()
n=int(string)
s=0
while n>0:
    s=s+n%10
    n=n//10
if s%9==0:
    print('Yes')
else:
    print('No')

### FIXED CODE ###

import sys 
def get_string(): return sys.stdin.readline().strip() 
  
string = get_string()
s=0
while string!='':
    s=s+int(string[-1])
    string=string[:-1]
if s%9==0:
    print('Yes')
else:
    print('No')
### BUGGY CODE ###

from sys import stdin

n = int(stdin.readline().rstrip())
print(sum(range(n)))

### FIXED CODE ###

from sys import stdin

n = int(stdin.readline().rstrip())
print(((n-1)*n)//2)
### BUGGY CODE ###

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

for n in range(N):
  print(A.count(n+1))

### FIXED CODE ###

N = int(input())
A = list(map(int, input().split()))
i = -1
A = sorted(A) + [0]
for n in range(N):
  count = 0
  while(A[i+1] == n+1):
    i += 1
    count += 1
  print(count)
### BUGGY CODE ###

import numpy as np
n=int(input())
a = list(map(int,input().split()))
cnt = [0,0,0] #1個の個数、二個の個数、三個の個数
for i in range(n):
    cnt[a[i]-1] += 1
    
def f(i,j,k):
    if [i,j,k] == [0,0,0]:
        return 0.0
    if dp[i][j][k] != 0.0:
        return dp[i][j][k]
    tmp = 0.0
    if i>0:
        tmp += f(i-1,j,k)*float(i)/float(i+j+k)
    if j>0:
        tmp += f(i+1,j-1,k)*float(j)/float(i+j+k)
    if k>0:
        tmp += f(i,j+1,k-1)*float(k)/float(i+j+k)
    tmp += float(n)/float(i+j+k)
    

    dp[i][j][k] = tmp
    return tmp
dp = np.zeros((n+1,n+1,n+1))
#dp = [[[0.0 for i in range(n+1)] for j in range(n+1)] for k in range(n+1)]

print(f(cnt[0],cnt[1],cnt[2]))

### FIXED CODE ###

import sys
input = sys.stdin.readline
n = int(input())
a = tuple(map(int,input().split()))
c1 = a.count(1)
c2 = a.count(2)
c3 = a.count(3)

dp = [[[0.0]*(n+1) for i in range(n+1)] for j in range(n+1)] 
dp[0][0][0] = 0
for i in range(c3+1):
    for j in range(c2+c3-i+1):
        for k in range(n-i-j+1):
            if i == j == k == 0:
                continue
            tmp = n
            if k != 0:
                tmp += k*dp[k-1][j][i]
            if j != 0:
                tmp += j*dp[k+1][j-1][i]
            if i != 0:
                tmp += i*dp[k][j+1][i-1]
            dp[k][j][i] = tmp/(i+j+k)

print(dp[c1][c2][c3])
### BUGGY CODE ###

import sys
input = sys.stdin.readline

n, k = map(int, input().split())
h = tuple(map(int, input().split()))

dp = [0] + [float("inf")]*(n-1)
dp[0] = 0
for i in range(1,n):
    for j in range(max(0,i-k), i):
        dp[i] = min( dp[i], dp[j]+abs(h[i]-h[j]) )
print(dp[-1])

### FIXED CODE ###

import sys
input = sys.stdin.readline

n, k = map(int, input().split())
h = tuple(map(int, input().split()))

dp = [0] + [float("inf")]*(n-1)
dp[0] = 0
for i in range(1,n):
    for j in range(max(0,i-k), i):
        dp[i] = min( dp[i], dp[j]+abs(h[i]-h[j]) )
print(dp[-1])
### BUGGY CODE ###

N, Q = map(int, input().split())
S = str(input())
LR = []
for i in range(Q):
    LR.append(list(map(int, input().split())))

for i in range(Q):
    L = S[LR[i][0]-1:LR[i][1]]
    cnt = 0
    for j in range(len(L)-1):
        if L[j:j+2] == 'AC':
            cnt += 1
    print(cnt)

### FIXED CODE ###

N, Q = map(int, input().split())
S = str(input())
LR = []
for i in range(Q):
    LR.append(list(map(int, input().split())))

num_list = []
cnt = 0
for i in range(N-1):
    if S[i:i+2] == 'AC':
        cnt += 1
    num_list.append(cnt)

for i in range(Q):
    if LR[i][0] == 1:
        l = 0
    else:
        l = num_list[LR[i][0]-2]
    if LR[i][1] == N:
        r = num_list[N-2]
    else:
        r = num_list[LR[i][1]-2]
    print(r-l)
### BUGGY CODE ###

N = int(input())
S = input()
ans = 0
for i in range(1000):
  indexS = 0 #Sの見ている場所
  indexI = 0 #3桁の暗証番号の見ている場所(0~2)
  i2 = str(i).zfill(3) # 0埋めしたi
  
  while indexS < N:
    if indexI > 2:
      break #探索終了
    if i2[indexI] == S[indexS]:
      indexI +=1
    indexS +=1
  if indexI >2:
    ans +=1
print(ans)

### FIXED CODE ###

def func1(i,N,S):
  indexS = 0 #Sの見ている場所
  indexI = 0 #3桁の暗証番号の見ている場所(0~2)
  i2 = str(i).zfill(3) # 0埋めしたi
  
  while indexS < N:
    if indexI > 2:
      break #探索終了
    if i2[indexI] == S[indexS]:
      indexI +=1
    indexS +=1
  return 1 if indexI >2 else 0

def main():
  N = int(input())
  S = input()
  print(sum([func1(i,N,S) for i in range(1000)]))

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

k = int(input())
 
lunlun = []
 
end = False
while True:
    val = 0
    while True:
        val += 1
        val_list = [int(x) for x in list(str(val))]
        is_lun = True 
        for x in range(len(val_list) - 1):
            if abs(val_list[x] - val_list[x + 1]) <= 1:
                continue
            else:
                is_lun = False
        if is_lun:
            lunlun.append(val)
        else:
            continue
        if len(lunlun) == k:
            end = True
            break
    if end:
        break
 
print(lunlun[k - 1])

### FIXED CODE ###

k = int(input())

nums = []
def inc(num):
    if num > 3234566667:
        return None
    if num <= 3234566667:
      nums.append(num)

    num_str = str(num)
    end = num_str[-1:]
    end_num = int(end)

    if end_num < 9:
        inc(int(num_str + str(end_num + 1)))
   
    inc(int(num_str + end))
    
    if end_num > 0:
        inc(int(num_str + str(end_num - 1)))

for i in range(1, 10):
    inc(i)

sort_nums = sorted(nums)
print(sorted(nums)[k - 1])
### BUGGY CODE ###

import math
import random
class Prime:
    seed_primes=[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97]
    def is_prime(self,n):
        is_prime_common=self.is_prime_common(n)
        if is_prime_common is not None:return is_prime_common
        if n<2000000:return self.is_prime_brute_force(n)
        return self.is_prime_miller_rabin(n)
    def is_prime_common(self,n):
        if n==1:return False
        if n in Prime.seed_primes:return True
        if any(map(lambda x:n%x==0,self.seed_primes)):return False
    def is_prime_brute_force(self,n):
        for k in range(2,int(math.sqrt(n))+1):
            if n%k==0:return False
        return True
    def is_prime_miller_rabin(self,n):
        d=n-1
        while d&1==0:d>>=1
        witnesses=self.get_witnesses(n)
        for w in witnesses:
            y=pow(w,d,n)
            while d!=n-1and y!=1and y!=n-1:
                y=y*y%n
                d<<=1
            if y!=n-1and d&1==0:return False
        return True
    def get_witnesses(self,num):
        def _get_range(num):
            if num<2047:return 1
            if num<1373653:return 2
            if num<25326001:return 3
            if num<3215031751:return 4
            if num<2152302898747:return 5
            if num<3474749660383:return 6
            if num<341550071728321:return 7
            if num<3825123056546413051:return 9
            return 12
        return self.seed_primes[:_get_range(num)]
    def gcd(self,a,b):
        if a<b:return self.gcd(b,a)
        if b==0:return a
        while b:a,b=b,a%b
        return a
    @staticmethod
    def f(x,n,seed):
        p=Prime.seed_primes[seed%len(Prime.seed_primes)]
        return(p*x+seed)%n
    def find_factor(self,n,seed=1):
        if self.is_prime(n):return n
        x,y,d=2,2,1
        count=0
        while d==1:
            count+=1
            x=self.f(x,n,seed)
            y=self.f(self.f(y,n,seed),n,seed)
            d=self.gcd(abs(x-y),n)
        if d==n:
            return self.find_factor(n,seed+1)
        return self.find_factor(d)
    # nのすべての素因数を見つける
    def find_factors(self,n):
        primes={}
        if self.is_prime(n):
            primes[n]=1
            return primes
        while n>1:
            factor=self.find_factor(n)
            primes.setdefault(factor,0)
            primes[factor]+=1
            n//=factor
        return primes
n=int(input())
a=n
for i in Prime().find_factors(n):
    a=a//i*~-i
print(a)


### FIXED CODE ###

from subprocess import*
from collections import*
n=int(input())
p=Counter(map(int,Popen(["factor",str(n)],stdout=PIPE).communicate()[0].decode().split()[1:]))
a=n
for i in p:
    a=a//i*~-i
print(a)
### BUGGY CODE ###

# -*- coding: utf-8 -*-
"""
Created on Tue Jan 21 18:19:39 2020

@author: matsui
"""

def napsak(N,K):
    dp=[0]*(W+1)
    for i in range(1,N+1):
        #print(dp)
        w,v=map(int,input().split())
        A=dp[:w]
        A.extend([max(dp[j],dp[j-w]+v) for j in range(w,W+1)])
        dp=A
    return max(dp)

N,W=map(int,input().split())   
print(napsak(N,W))


### FIXED CODE ###

# -*- coding: utf-8 -*-
"""
Created on Tue Jan 21 18:19:39 2020

@author: matsui
"""


N,W=map(int,input().split())
dp=[0]*(W+1)
L = sorted([list(map(int,input().split())) for i in range(N)])
s=0

for w, v in L:
    s+=w
    for j in range(min(W,s),w-1,-1):
        if dp[j-w]+v > dp[j]: dp[j]=dp[j-w]+v
    
print(max(dp))
### BUGGY CODE ###

import numpy as np

N = int(input())
H_array = np.array(list(map(int, input().split())))

can_move = H_array[1:] <= H_array[:-1]

max_series = 0
for i in range(N-1):
    temp_sum = 0
    for j in range(i, N-1):
        if not can_move[j]:
            max_series = max(max_series, temp_sum)
            break
        temp_sum += 1
        max_series = max(max_series, temp_sum)

print(max_series)

### FIXED CODE ###

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

max_count = 0
count = 0
for i in range(1, N):
    if H[i-1] >= H[i]:
        count += 1
    else:
        max_count = max(max_count, count)
        count = 0
        
max_count = max(max_count, count)
print(max_count)
### BUGGY CODE ###

N=int(input())
def fn(n):
  lis=[]
  i=1
  while i**2<=2*n:
    lis.append(i)
    i+=1
  rtn=0
  for i,a in enumerate(lis):
    for j in range(i,len(lis)):
      b=lis[j]
      for k in range(j,len(lis)):
        c=lis[k]
        if a**2+b**2+c**2==2*n:
          x,y,z=(a-b+c)/2,(a+b-c)/2,(b+c-a)/2
          if x%1==0 and y%1==0 and z%1==0: 
            if x>0 and y>0 and z>0:
              if x==y and y==z: rtn+=1
              elif x==y or y==z or z==x: rtn+=3
              else: rtn+=6
  return rtn

for i in range(1,N+1): print(fn(i))

### FIXED CODE ###

N=int(input())
def fn(N):
  lis=[]
  i=1
  T=-1
  while i**2<=2*N:
    lis.append(i)
    i+=1
  rtn=[0]*N
  for i,a in enumerate(lis):
    for j in range(i,len(lis)):
      b=lis[j]
      for k in range(j,len(lis)):
        c=lis[k]
        tmp=a**2+b**2+c**2
        if tmp%2==0 and tmp<=2*N:
          x,y,z=(a-b+c)/2,(a+b-c)/2,(b+c-a)/2
          if x%1==0 and y%1==0 and z%1==0: 
            if x>0 and y>0 and z>0:
              if x==y and y==z: rtn[int(tmp/2)-1]+=1
              elif x==y or y==z or z==x: rtn[int(tmp/2)-1]+=3
              else: rtn[int(tmp/2)-1]+=6
  return rtn


lis=fn(N)
for i in range(N): print(lis[i])
### BUGGY CODE ###

N, M = map(int, input().split())
from collections import defaultdict
d = defaultdict(list)
l = [[] for i in range(M)]
for i in range(M):
    P,Y = map(str, input().split())
    P = "0" * (6-len(P)) + P
    d[P].append(int(Y))
    l[i] = [P,int(Y)]
for i in range(M):
    tmp = str((sorted(d[l[i][0]]).index(l[i][1]))+1)
    print(l[i][0] + "0" * (6-len(tmp)) + tmp)

### FIXED CODE ###

N, M = map(int, input().split())
from collections import defaultdict
d = defaultdict(list)
for i in range(M):
    P,Y = map(int, input().split())
    d[P].append([Y,i])
l = [0 for i in range(M)] 
cnt = 0   
for key in d:
    data = sorted(d[key])
    tmp = 0
    for i in range(len(data)):
        l[cnt] = [str(key).zfill(6) + str(tmp+1).zfill(6), data[i][1]]
        cnt += 1
        tmp += 1
l.sort(key = lambda x: x[1])
for i in range(M):
    print(l[i][0])
### BUGGY CODE ###

n, m = list(map(int, input().split()))
hs =  list(map(int, input().split()))
roads = []
ans = 0
for i in range(m):
    roads += [list(map(int, input().split()))]
for i in range(1, n+1):
    judge = 1
    for road in roads:
        if i in road:
            j = 0
            if road[0] == i:
                j = road[1]
            else:
                j = road[0]
            if hs[j-1] >= hs[i-1]:
                judge = 0
    ans += judge
print(ans)

### FIXED CODE ###

n, m = list(map(int, input().split()))
hs =  list(map(int, input().split()))
ans = [1]*n
roads = []
for i in range(m):
    roads += [list(map(int, input().split()))]
for road in roads:
    if hs[road[0]-1] <= hs[road[1]-1]:
        ans[road[0]-1] = 0
    if hs[road[0]-1] >= hs[road[1]-1]:
        ans[road[1]-1] = 0
print(ans.count(1))
### BUGGY CODE ###

n = int(input())
s = str(input())

check = dict()
def get_pattern2(i, j):
    a = s[i]
    b = s[j]
    total = 0
    check_str = ""
    if a == "R" or b == "R":
        check_str += "R"
    if a == "G" or b == "G":
        check_str += "G"
    if a == "B" or b == "B":
        check_str += "B"

    for k in range(j+1, n):
        if check_str+str(k) in check:
            total += check[check_str+str(k)]
            break
        if a != s[k] and b != s[k]:
            total += 1
    check[check_str+str(j+1)] = total
    return total

def get_pattern(i):
    a = s[i]
    total = 0
    for j in range(i+1, n):
        if a+str(i) in check:
            total += check[a+str(i)]
            break
        if a != s[j]:
            total += get_pattern2(i, j)
    check[a+str(i)] = total

    # k-j = i-jなものをぬく
    for j in range(i+1, n):
        k = j + j - i
        if k < n:
            if a != s[k] and s[j] != s[k] and a != s[j]:
                total -= 1

    return total

total = 0
for i in range(n-1, -1, -1):
    total += get_pattern(i)
print(total)


### FIXED CODE ###

n = int(input())
s = str(input())

check = dict()
def get_pattern2(i, j):
    a = s[i]
    b = s[j]
    total = 0
    check_str = ""
    if a == "R" or b == "R":
        check_str += "R"
    if a == "G" or b == "G":
        check_str += "G"
    if a == "B" or b == "B":
        check_str += "B"

    for k in range(j+1, n):
        if check_str+str(k) in check:
            total += check[check_str+str(k)]
            break
        if a != s[k] and b != s[k]:
            total += 1
    check[check_str+str(j+1)] = total
    return total

def get_pattern(i):
    a = s[i]
    total = 0
    for j in range(i+1, n):
        if a+str(j) in check:
            total += check[a+str(j)]
            break
        if a != s[j]:
            total += get_pattern2(i, j)
    check[a+str(i+1)] = total

    # k-j = i-jなものをぬく
    for j in range(i+1, n):
        k = j + j - i
        if k >= n:
            break
        if a != s[k] and s[j] != s[k] and a != s[j]:
            total -= 1
    return total

total = 0
for i in range(n-1, -1, -1):
    total += get_pattern(i)
print(total)
### BUGGY CODE ###

import sys
import numpy as np
from numba import njit

input = sys.stdin.buffer.readline

N = int(input())
vws = [tuple(map(int, input().split())) for _ in range(N)]

n = min(2**10, N)
vws_arr = np.array(vws, np.int32)

@njit("i4[:, :](i4[:, :])", cache = True)
def precompute(vws):
    dp = np.zeros((n, 10**5+1), np.int32)
    dp[0, vws[0][1]:] = vws[0][0]
    for i in range(1, n):
        v, w = vws[i]
        dp[i] = dp[(i-1)//2]
        dp[i, w:] = np.maximum(dp[(i-1)//2, :-w]+v, dp[i, w:])
    return dp

dp = precompute(vws_arr)

@njit("i4(i4[:], i4[:], i4, i4[:])", cache = True)
def func(vs, ws, L, dp_):
    values = np.zeros(1 << len(vs), np.int32)
    weights = np.zeros(1 << len(vs), np.int32)
    for i in range(len(vs)):
        for bits in range(1 << len(vs)):
            if bits & (1 << i):
                values[bits] += vs[i]
                weights[bits] += ws[i]
    mask = (weights <= L)     
    return np.amax(dp_[L - weights[mask]] + values[mask])

Q = int(input())
for _ in range(Q):
    V, L = map(int, input().split())
    V -= 1
    if V < n:
        print(dp[V, L])
    else:
        Vs = []
        while V >= n:
            Vs.append(V)
            V = (V-1) // 2
        vs = vws_arr[Vs, 0]
        ws = vws_arr[Vs, 1]
        print(func(vs, ws, L, dp[V]))


### FIXED CODE ###

import sys
import numpy as np
from numba import njit

input = sys.stdin.buffer.readline

N = int(input())
vws = [tuple(map(int, input().split())) for _ in range(N)]

n = min(2**11, N)
vws_arr = np.array(vws, np.int32)

dp = np.zeros((n, 10**5+1), np.int32)
for i in range(n):
    v, w = vws[i]
    dp[i] = dp[(i-1)//2]
    dp[i, w:] = np.maximum(dp[(i-1)//2, :-w]+v, dp[i, w:])


@njit("i4(i4[::1], i4[::1], i4, i4[::1])", cache = True)
def func(vs, ws, L, dp_):
    values = np.zeros(1 << len(vs), np.int32)
    weights = np.zeros(1 << len(vs), np.int32)
    for i in range(len(vs)):
        for bits in range(1 << len(vs)):
            if bits & (1 << i):
                values[bits] += vs[i]
                weights[bits] += ws[i]
    ret = 0
    for v, w in zip(values, weights):
        if w <= L:
            ret = max(dp_[L - w] + v, ret)
    return ret

Q = int(input())
for _ in range(Q):
    V, L = map(int, input().split())
    V -= 1
    if V < n:
        print(dp[V, L])
    else:
        Vs = []
        while V >= n:
            Vs.append(V)
            V = (V-1) // 2
        vs = vws_arr[Vs, 0]
        ws = vws_arr[Vs, 1]
        print(func(vs, ws, L, dp[V]))
### BUGGY CODE ###

h, n = map(int, input().split())
ab = list(list(map(int, input().split())) for _ in range(n) )

dp = [0] * (h + max(list( node[0] for node in ab )))

for i in range(1, len(dp)):
  d = 10 ** 9
  for a, b in ab:
    d = min(dp[i-a] + b, d)
  dp[i] = d
print(dp[h])

### FIXED CODE ###

h, n = map(int, input().split())
ab = list(list(map(int, input().split())) for _ in range(n) )

dp = [0] * (h + max(list( node[0] for node in ab )))

for i in range(1, len(dp)):
  dp[i] = min(list(dp[i - a] + b for a, b in ab))
print(dp[h])