Submission #68190197

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Source Code Expand

#![allow(unused_imports,non_snake_case,dead_code)]
use std::{cmp::Reverse as Rev,ops::Range,collections::*,iter::*,mem::swap};
use rustc_hash::{FxHashSet as HashSet,FxHashMap as HashMap};
use ac_library::{*,modint::ModIntBase,ModInt998244353 as M};
use {proconio::{marker::*,*},itertools::*};



fn main(){
    input!{
        t:usize,
        case:[(usize,usize);t],
    }

    for &(n,m) in &case{
        if m%2==0{
            println!("{}",m/2*n);
        } else{
            println!("{}",(m-1)/2*(n-1)+(m+1)/2);
        }
    }
}

Submission Info

Judge Result