結果
| 問題 |
No.752 mod数列
|
| コンテスト | |
| ユーザー |
vwxyz
|
| 提出日時 | 2022-09-22 15:13:56 |
| 言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
| 結果 |
AC
|
| 実行時間 | 1,172 ms / 2,000 ms |
| コード長 | 2,938 bytes |
| コンパイル時間 | 219 ms |
| コンパイル使用メモリ | 13,056 KB |
| 実行使用メモリ | 22,260 KB |
| 最終ジャッジ日時 | 2024-12-22 04:51:10 |
| 合計ジャッジ時間 | 17,936 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 31 |
ソースコード
import bisect
import copy
import decimal
import fractions
import heapq
import itertools
import math
import random
import sys
import time
from collections import Counter,deque,defaultdict
from functools import lru_cache,reduce
from heapq import heappush,heappop,heapify,heappushpop,_heappop_max,_heapify_max
def _heappush_max(heap,item):
heap.append(item)
heapq._siftdown_max(heap, 0, len(heap)-1)
def _heappushpop_max(heap, item):
if heap and item < heap[0]:
item, heap[0] = heap[0], item
heapq._siftup_max(heap, 0)
return item
from math import gcd as GCD
read=sys.stdin.read
readline=sys.stdin.readline
readlines=sys.stdin.readlines
write=sys.stdout.write
class Cumsum:
def __init__(self,lst,mod=0):
self.N=len(lst)
self.mod=mod
self.cumsum=[0]*(self.N+1)
self.cumsum[0]=0
for i in range(1,self.N+1):
self.cumsum[i]=self.cumsum[i-1]+lst[i-1]
if self.mod:
self.cumsum[i]%=self.mod
def __getitem__(self,i):
if type(i)==int:
if 0<=i<self.N:
a,b=i,i+1
elif -self.N<=i<0:
a,b=i+self.N,i+self.N+1
else:
raise IndexError('list index out of range')
else:
a,b=i.start,i.stop
if a==None or a<-self.N:
a=0
elif self.N<=a:
a=self.N
elif a<0:
a+=self.N
if b==None or self.N<=b:
b=self.N
elif b<-self.N:
b=0
elif b<0:
b+=self.N
s=self.cumsum[b]-self.cumsum[a]
if self.mod:
s%=self.mod
return s
def __setitem__(self,i,x):
if -self.N<=i<0:
i+=self.N
elif not 0<=i<self.N:
raise IndexError('list index out of range')
self.cumsum[i+1]=self.cumsum[i]+x
if self.mod:
self.cumsum[i+1]%=self.mod
def __str__(self):
lst=[self.cumsum[i+1]-self.cumsum[i] for i in range(self.N)]
if self.mod:
for i in range(self.N):
lst[i]%=self.mod
return "["+", ".join(map(str,lst))+"]"
def Bisect_Int(ok,ng,is_ok):
while abs(ok-ng)>1:
mid=(ok+ng)//2
if is_ok(mid):
ok=mid
else:
ng=mid
return ok
P,Q=map(int,readline().split())
M=10**5
A=[0]+[P//n for n in range(1,M)]
PP=A[-1]+1
for i in range(1,M):
A[i]*=i
bound=[10**9+1]+[P//n+1 for n in range(1,PP+1)]
B=[(bound[i]-bound[i+1])*(bound[i]+bound[i+1]-1)//2*i for i in range(PP)]
A=Cumsum(A)
B=Cumsum(B)
def S(c):
if c<=M:
return A[:c]
def is_ok(x):
return c>=bound[x]
x=Bisect_Int(PP,-1,is_ok)
return A[:bound[PP]]+B[x:]+(x-1)*(c-bound[x])*(bound[x]+c-1)//2
for q in range(Q):
L,R=map(int,readline().split())
R+=1
ans=P*(R-L)-(S(R)-S(L))
print(ans)
vwxyz