题解 | 左侧严格小于计数

import sys
n=int(sys.stdin.readline().strip())
a=list(map(int,sys.stdin.readline().split()))
b=[0]*n
for i in range(n):
    count=0
    for j in range(i):
        if a[j]<a[i]:
            count+=1
    b[i]=count
for i in range(n):
    print(b[i],end=' ')