diff --git a/src/tasks/mod.rs b/src/tasks/mod.rs
index 6adc2e5..3536447 100644
--- a/src/tasks/mod.rs
+++ b/src/tasks/mod.rs
@@ -1,18 +1,13 @@
-use std::{
-    collections::HashMap,
-    fmt::format,
-    io::{self, Error, ErrorKind},
-};
+use std::collections::HashMap;
 
 use crate::utils::parse::{Responses, Testcase, Testcases};
 use tasks01::{
     block2poly::block2poly,
-    poly2block::{self, poly2block},
+    poly2block::{poly2block},
     sea128::sea128,
 };
 
 use anyhow::{anyhow, Result};
-use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 
 mod tasks01;
diff --git a/src/tasks/tasks01/block2poly.rs b/src/tasks/tasks01/block2poly.rs
index 61a1706..7ed4f20 100644
--- a/src/tasks/tasks01/block2poly.rs
+++ b/src/tasks/tasks01/block2poly.rs
@@ -1,8 +1,6 @@
-use std::{str::Bytes, string};
 
-use crate::utils::poly::{self, b64_2_num, get_coefficients};
+use crate::utils::poly::{b64_2_num, get_coefficients};
 use anyhow::Result;
-use base64::prelude::*;
 use serde_json::Value;
 
 pub fn block2poly(val: &Value) -> Result<Vec<u8>> {
diff --git a/src/tasks/tasks01/poly2block.rs b/src/tasks/tasks01/poly2block.rs
index b9bacab..0c958a8 100644
--- a/src/tasks/tasks01/poly2block.rs
+++ b/src/tasks/tasks01/poly2block.rs
@@ -1,4 +1,4 @@
-use crate::utils::poly::{self, coefficient_to_binary};
+use crate::utils::poly::{self};
 use base64::prelude::*;
 use serde_json::Value;
 
diff --git a/src/tasks/tasks01/sea128.rs b/src/tasks/tasks01/sea128.rs
index 09b090a..3f5c40d 100644
--- a/src/tasks/tasks01/sea128.rs
+++ b/src/tasks/tasks01/sea128.rs
@@ -2,10 +2,7 @@ use anyhow::{anyhow, Result};
 use base64::prelude::*;
 use serde_json::Value;
 
-use crate::utils::{
-    ciphers::{sea_128_decrypt, sea_128_encrypt},
-    poly::b64_2_num,
-};
+use crate::utils::ciphers::{sea_128_decrypt, sea_128_encrypt};
 
 pub fn sea128(args: &Value) -> Result<String> {
     let key_string: String = serde_json::from_value(args["key"].clone())?;
diff --git a/src/utils/poly.rs b/src/utils/poly.rs
index 528124e..a496d88 100644
--- a/src/utils/poly.rs
+++ b/src/utils/poly.rs
@@ -1,6 +1,6 @@
 use anyhow::Result;
 use base64::prelude::*;
-use std::{fmt::format, str::FromStr, u128, u8};
+use std::{str::FromStr, u128, u8};
 
 pub fn get_alpha_rep(num: u128) -> String {
     let powers: Vec<u8> = get_coefficients(num);