"use strict";
    
const main = arg => {
    arg = arg.trim().split("\n");
    const N = parseInt(arg[0].split(" ")[0]);
    const M = parseInt(arg[0].split(" ")[1]);
    
    let answer = ((100 * (N - M)) + (1900 * M)) * Math.pow(2, M);
    
    console.log(answer);
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));