function birthday(s, d, m) {
    
    let ways=0;
    
    for(let i=0;i<s.length;i++){
        
        if(s.length>1){
        let cut_slice=s.slice(i,m);
        m+=1;
                
        let sum_of_cut_slice=0;
        
        for(let j=0;j<cut_slice.length;j++){
            sum_of_cut_slice+=cut_slice[j];
            }
            
        if(sum_of_cut_slice==d){
            ways+=1;
            }
            
        }
        
        else{
            if(s[0]==d){
            ways+=1;    
            }
        }
    }
    
    return ways;

}