func birthday(s []int32, d int32, m int32) int32 {
    var ways int32 = 0
    
    var geralSum int32 = 0
    for i, value := range s {
        geralSum += value
        segmentSum := s[i]
        
        for j := int32(1); j < m; j++ {
            newIndex := int32(i) + j
            
            if newIndex >= int32(len(s)) {
                break    
            }
            
            segmentSum += s[newIndex]
        }

        if segmentSum == d {
            ways += 1
        }
    }
    
    if geralSum == m {
        ways += 1     
    }
    
    return ways
}