Hello Codeforces community,↵
↵
I'm reaching out for help with a Rust programming issue that's been frustrating me for a while. As a beginner in Rust, I'm struggling to understand how to read complex inputs, especially when it comes to competitive programming.↵
↵
I've been trying to learn Rust, but I'm finding it challenging to grasp the concept of input/output handling. I've watched YouTube tutorials, but they only cover basic examples like "Hello, World!" or reading simple integers , also i have tried exploring some of the udemy courses but they are teaching all the complex stuff but they are not telling how to read input . However, when it comes to more complex inputs, such as reading multiple test cases with varying input formats, I'm lost.↵
↵
I've tried to convert my C++ code to Rust using AI-powered tools like Blackbox AI and ChatGPT, but the generated code doesn't work as expected. I've also used C++ to Rust converters, but the resulting code doesn't produce any output.↵
↵
Here's my C++ code that I'm trying to convert to Rust:↵
↵
<spoiler summary="c++ Code">↵
```c++↵
#include<bits/stdc++.h>↵
↵
using namespace std;↵
↵
↵
void solve(){↵
↵
int n, p;↵
↵
cin >> n >> p;↵
↵
vector<pair<int,int>>vec(n);↵
↵
for(int i=0;i<n;i++){↵
↵
cin>>vec[i].second;↵
↵
}↵
↵
for(int i=0;i<n;i++){↵
↵
cin>>vec[i].first;↵
↵
}↵
↵
sort(vec.begin(),vec.end());↵
↵
int need=n-1;↵
↵
long long ans=p;↵
↵
for(int i=0;i<n;i++){↵
↵
if(vec[i].first<=p){↵
↵
int t=min(need,vec[i].second);↵
↵
need-=t;↵
↵
ans+=(long long)t*vec[i].first;↵
↵
}↵
↵
}↵
↵
cout<<ans+(long long)need*p<<endl;↵
↵
}↵
↵
↵
int main(){↵
↵
int t;↵
↵
cin >> t;↵
↵
while(t--){↵
↵
solve();↵
↵
}↵
↵
} ↵
```↵
</spoiler>↵
↵
↵
↵
The AI-generated Rust code is:↵
↵
<spoiler summary="rust Code">↵
```rust↵
↵
use std::io::{self, BufRead};↵
↵
use std::cmp::min;↵
↵
↵
fn solve() {↵
↵
let stdin = io::stdin();↵
↵
let mut input = stdin.lock().lines();↵
↵
↵
↵
let first_line = input.next().unwrap().unwrap();↵
↵
let mut iter = first_line.split_whitespace();↵
↵
let n: usize = iter.next().unwrap().parse().unwrap();↵
↵
let p: i64 = iter.next().unwrap().parse().unwrap();↵
↵
↵
↵
let mut vec: Vec<(i64, i64)> = Vec::with_capacity(n);↵
↵
↵
↵
for _ in 0..n {↵
↵
let value: i64 = input.next().unwrap().unwrap().parse().unwrap();↵
↵
vec.push((0, value));↵
↵
}↵
↵
↵
↵
for i in 0..n {↵
↵
let value: i64 = input.next().unwrap().unwrap().parse().unwrap();↵
↵
vec[i].0 = value;↵
↵
}↵
↵
↵
↵
vec.sort();↵
↵
↵
↵
let mut need = n as i64 - 1;↵
↵
let mut ans = p;↵
↵
↵
↵
for i in 0..n {↵
↵
if vec[i].0 <= p {↵
↵
let t = min(need, vec[i].1);↵
↵
need -= t;↵
↵
ans += t * vec[i].0;↵
↵
}↵
↵
}↵
↵
↵
↵
println!("{}", ans + need * p);↵
↵
}↵
↵
↵
fn main() {↵
↵
let stdin = io::stdin();↵
↵
let input = stdin.lock().lines();↵
↵
let mut iter = input.map(|line| line.unwrap()).peekable();↵
↵
↵
↵
let t: usize = iter.next().unwrap().parse().unwrap();↵
↵
↵
↵
for _ in 0..t {↵
↵
solve();↵
↵
}↵
↵
}↵
```↵
</spoiler>↵
↵
↵
↵
However, this code is giving me an "idleness limit" error, which I've never seen before in C++ or Java.↵
↵
If someone could provide guidance on how to read complex inputs in Rust or share a working code for this problem without using templates, I would greatly appreciate it. I'm eager to learn and understand the underlying concepts, rather than just copying and pasting code.I don't want to use templates , first i want to write the raw code i don't care about writing some more line of code but i want to know everything from scratch also when i will become somewhat decent then i will write my own template i don't want to blindly follow some template and simply say that reading input and output is complicated in rust.↵
↵
I've searched for Rust submissions for this problem (https://codeforces.net/contest/1876/problem/A), but out of nearly 7,000 submissions, I only found 6-7 in Rust, and they were all using templates for reading inputs.↵
↵
Please help me overcome this hurdle, and I'll be grateful for any resources or explanations that can aid my learning journey in Rust.↵
↵
I'm reaching out for help with a Rust programming issue that's been frustrating me for a while. As a beginner in Rust, I'm struggling to understand how to read complex inputs, especially when it comes to competitive programming.↵
↵
I've been trying to learn Rust, but I'm finding it challenging to grasp the concept of input/output handling. I've watched YouTube tutorials, but they only cover basic examples like "Hello, World!" or reading simple integers , also i have tried exploring some of the udemy courses but they are teaching all the complex stuff but they are not telling how to read input . However, when it comes to more complex inputs, such as reading multiple test cases with varying input formats, I'm lost.↵
↵
I've tried to convert my C++ code to Rust using AI-powered tools like Blackbox AI and ChatGPT, but the generated code doesn't work as expected. I've also used C++ to Rust converters, but the resulting code doesn't produce any output.↵
↵
Here's my C++ code that I'm trying to convert to Rust:↵
↵
<spoiler summary="c++ Code">↵
```c++↵
#include<bits/stdc++.h>↵
↵
using namespace std;↵
↵
↵
void solve(){↵
↵
int n, p;↵
↵
cin >> n >> p;↵
↵
vector<pair<int,int>>vec(n);↵
↵
for(int i=0;i<n;i++){↵
↵
cin>>vec[i].second;↵
↵
}↵
↵
for(int i=0;i<n;i++){↵
↵
cin>>vec[i].first;↵
↵
}↵
↵
sort(vec.begin(),vec.end());↵
↵
int need=n-1;↵
↵
long long ans=p;↵
↵
for(int i=0;i<n;i++){↵
↵
if(vec[i].first<=p){↵
↵
int t=min(need,vec[i].second);↵
↵
need-=t;↵
↵
ans+=(long long)t*vec[i].first;↵
↵
}↵
↵
}↵
↵
cout<<ans+(long long)need*p<<endl;↵
↵
}↵
↵
↵
int main(){↵
↵
int t;↵
↵
cin >> t;↵
↵
while(t--){↵
↵
solve();↵
↵
}↵
↵
} ↵
```↵
</spoiler>↵
↵
↵
↵
The AI-generated Rust code is:↵
↵
<spoiler summary="rust Code">↵
```rust↵
↵
use std::io::{self, BufRead};↵
↵
use std::cmp::min;↵
↵
↵
fn solve() {↵
↵
let stdin = io::stdin();↵
↵
let mut input = stdin.lock().lines();↵
↵
↵
↵
let first_line = input.next().unwrap().unwrap();↵
↵
let mut iter = first_line.split_whitespace();↵
↵
let n: usize = iter.next().unwrap().parse().unwrap();↵
↵
let p: i64 = iter.next().unwrap().parse().unwrap();↵
↵
↵
↵
let mut vec: Vec<(i64, i64)> = Vec::with_capacity(n);↵
↵
↵
↵
for _ in 0..n {↵
↵
let value: i64 = input.next().unwrap().unwrap().parse().unwrap();↵
↵
vec.push((0, value));↵
↵
}↵
↵
↵
↵
for i in 0..n {↵
↵
let value: i64 = input.next().unwrap().unwrap().parse().unwrap();↵
↵
vec[i].0 = value;↵
↵
}↵
↵
↵
↵
vec.sort();↵
↵
↵
↵
let mut need = n as i64 - 1;↵
↵
let mut ans = p;↵
↵
↵
↵
for i in 0..n {↵
↵
if vec[i].0 <= p {↵
↵
let t = min(need, vec[i].1);↵
↵
need -= t;↵
↵
ans += t * vec[i].0;↵
↵
}↵
↵
}↵
↵
↵
↵
println!("{}", ans + need * p);↵
↵
}↵
↵
↵
fn main() {↵
↵
let stdin = io::stdin();↵
↵
let input = stdin.lock().lines();↵
↵
let mut iter = input.map(|line| line.unwrap()).peekable();↵
↵
↵
↵
let t: usize = iter.next().unwrap().parse().unwrap();↵
↵
↵
↵
for _ in 0..t {↵
↵
solve();↵
↵
}↵
↵
}↵
```↵
</spoiler>↵
↵
↵
↵
However, this code is giving me an "idleness limit" error, which I've never seen before in C++ or Java.↵
↵
If someone could provide guidance on how to read complex inputs in Rust or share a working code for this problem without using templates, I would greatly appreciate it. I'm eager to learn and understand the underlying concepts, rather than just copying and pasting code.I don't want to use templates , first i want to write the raw code i don't care about writing some more line of code but i want to know everything from scratch also when i will become somewhat decent then i will write my own template i don't want to blindly follow some template and simply say that reading input and output is complicated in rust.↵
↵
I've searched for Rust submissions for this problem (https://codeforces.net/contest/1876/problem/A), but out of nearly 7,000 submissions, I only found 6-7 in Rust, and they were all using templates for reading inputs.↵
↵
Please help me overcome this hurdle, and I'll be grateful for any resources or explanations that can aid my learning journey in Rust.↵
