import sys
i=0;
while True:
    if int((i+100)**0.5)*int((i+100)**0.5)==i+100 and int((i+268)**0.5)*int((i+268)**0.5)==i+268:
        print(i)
        sys.exit()
    i=i+1


/**************************************************************
	Problem: 1267
	User: admin
	Language: Python
	Result: Runtime Error
****************************************************************/