import collections,sys,math,functools,operator,itertools,bisect,heapq,decimal,string,time,random
#sys.setrecursionlimit(10**9)
sys.set_int_max_str_digits(0)
input = sys.stdin.readline
for i in range(int(input())):
    n,m =map(int,input().split())
    if n % 2 == 0:
        x = n//2
        print(((x%m)*(n+1)%m)%m)
    else:
        x = (n+1)//2
        print((x%m)*(n%m)%m)