結果
| 問題 |
No.3127 Multiple of Twin Prime
|
| コンテスト | |
| ユーザー |
 Moss_Local
|
| 提出日時 | 2025-04-25 21:45:19 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 226 ms / 2,500 ms |
| コード長 | 4,902 bytes |
| コンパイル時間 | 13,178 ms |
| コンパイル使用メモリ | 387,704 KB |
| 実行使用メモリ | 18,920 KB |
| 最終ジャッジ日時 | 2025-04-25 21:45:48 |
| 合計ジャッジ時間 | 16,987 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge3 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 12 |
コンパイルメッセージ
warning: variable does not need to be mutable
--> src/main.rs:119:9
|
119 | let mut vec: Vec<i64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
|
= note: `#[warn(unused_mut)]` on by default
warning: variable does not need to be mutable
--> src/main.rs:125:9
|
125 | let mut vec: Vec<i64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:130:9
|
130 | let mut vec: Vec<usize> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:136:9
|
136 | let mut vec: Vec<f64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:141:9
|
141 | let mut vec: Vec<char> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:146:9
|
146 | let mut vec: Vec<usize> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:151:9
|
151 | let mut vec: Vec<i64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:157:9
|
157 | let mut vec: Vec<usize> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: unused variable: `i`
--> src/main.rs:211:9
|
211 | for i in 0..t {
| ^ help: if this is intentional, prefix it with an underscore: `_i`
|
= note: `#[warn(unused_variables)]` on by default
warning: comparison is useless due to type limits
--> src/main.rs:165:8
|
165 | if n >= 0 {
|
ソースコード
// -*- coding:utf-8-unix -*-
// #![feature(map_first_last)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(unused_macros)]
// use core::num;
use std::cmp::*;
use std::fmt::*;
use std::hash::*;
use std::io::BufRead;
use std::iter::FromIterator;
use std::*;
use std::{cmp, collections, fmt, io, iter, ops, str};
const INF: i64 = 1223372036854775807;
const UINF: usize = INF as usize;
const LINF: i64 = 2147483647;
const INF128: i128 = 1223372036854775807000000000000;
const MOD1: i64 = 1000000007;
const MOD9: i64 = 998244353;
const MOD: i64 = MOD9;
// const MOD: i64 = MOD2;
const UMOD: usize = MOD as usize;
const M_PI: f64 = 3.14159265358979323846;
// use proconio::input;
// const MOD: i64 = INF;
use cmp::Ordering::*;
use std::collections::*;
use std::io::stdin;
use std::io::stdout;
use std::io::Write;
macro_rules! p {
($x:expr) => {
//if expr
println!("{}", $x);
};
}
macro_rules! vp {
// vector print separate with space
($x:expr) => {
println!(
"{}",
$x.iter()
.map(|x| x.to_string())
.collect::<Vec<_>>()
.join(" ")
);
};
}
macro_rules! d {
($x:expr) => {
eprintln!("{:?}", $x);
};
}
macro_rules! yn {
($val:expr) => {
if $val {
println!("Yes");
} else {
println!("No");
}
};
}
macro_rules! map{
// declear btreemap
($($key:expr => $val:expr),*) => {
{
let mut map = ::std::collections::BTreeMap::new();
$(
map.insert($key, $val);
)*
map
}
};
}
macro_rules! set{
// declear btreemap
($($key:expr),*) => {
{
let mut set = ::std::collections::BTreeSet::new();
$(
set.insert($key);
)*
set
}
};
}
//input output
#[allow(dead_code)]
fn read<T: std::str::FromStr>() -> T {
let mut s = String::new();
std::io::stdin().read_line(&mut s).ok();
s.trim().parse().ok().unwrap()
}
#[allow(dead_code)]
fn read_vec<T: std::str::FromStr>() -> Vec<T> {
read::<String>()
.split_whitespace()
.map(|e| e.parse().ok().unwrap())
.collect()
}
#[allow(dead_code)]
fn read_mat<T: std::str::FromStr>(n: u32) -> Vec<Vec<T>> {
(0..n).map(|_| read_vec()).collect()
}
#[allow(dead_code)]
fn readii() -> (i64, i64) {
let mut vec: Vec<i64> = read_vec();
(vec[0], vec[1])
}
#[allow(dead_code)]
fn readiii() -> (i64, i64, i64) {
let mut vec: Vec<i64> = read_vec();
(vec[0], vec[1], vec[2])
}
#[allow(dead_code)]
fn readuu() -> (usize, usize) {
let mut vec: Vec<usize> = read_vec();
(vec[0], vec[1])
}
#[allow(dead_code)]
fn readff() -> (f64, f64) {
let mut vec: Vec<f64> = read_vec();
(vec[0], vec[1])
}
fn readcc() -> (char, char) {
let mut vec: Vec<char> = read_vec();
(vec[0], vec[1])
}
fn readuuu() -> (usize, usize, usize) {
let mut vec: Vec<usize> = read_vec();
(vec[0], vec[1], vec[2])
}
#[allow(dead_code)]
fn readiiii() -> (i64, i64, i64, i64) {
let mut vec: Vec<i64> = read_vec();
(vec[0], vec[1], vec[2], vec[3])
}
#[allow(dead_code)]
fn readuuuu() -> (usize, usize, usize, usize) {
let mut vec: Vec<usize> = read_vec();
(vec[0], vec[1], vec[2], vec[3])
}
fn prime_table(n: usize) -> Vec<usize> {
let mut is_prime = vec![true; n + 1];
let mut res = vec![0 as usize; 0];
if n >= 0 {
is_prime[0] = false;
}
if n >= 1 {
is_prime[1] = false;
}
let mut i = 2 as usize;
while i * i <= n {
if !is_prime[i] {
i += 1;
continue;
}
// println!("{:?}", "call");
let mut j = i + i as usize;
while j <= n {
is_prime[j] = false;
j += i;
}
i += 1;
}
for i in 0..n {
if is_prime[i] == true {
res.push(i);
}
}
return res;
}
fn main() {
let pt = prime_table(10000001);
let mut vec = vec![];
for i in 0..pt.len() - 1 {
let p1 = pt[i];
let p2 = pt[i + 1];
if p2 - p1 == 2 {
vec.push((p1 * p2, p1, p2));
}
}
// d!((vec[0]));
// d!((vec[1]));
// d!((vec[2]));
vec.sort();
// d!(vec);
vec.insert(0, (0, 0, 0));
let t: usize = read();
for i in 0..t {
let n: usize = read();
//bin serch
let mut l = 0;
let mut r = vec.len() - 1;
while l < r {
let m = (l + r) / 2;
if vec[m].0 < n {
l = m + 1;
} else {
r = m;
}
}
if vec[l].0 > n {
l -= 1;
}
if vec[l] == (0, 0, 0) {
p!(-1);
continue;
}
println!("{}", vec[l].1 * vec[l].2);
}
}