using System;
using System.Collections.Generic;
using System.Linq;
using BitArray = System.Collections.BitArray;
using BigInteger = System.Numerics.BigInteger;
using TextReader = System.IO.TextReader;

namespace AtCoderProject
{
    public class Program
    {
        public object Calc()
        {
            var N = consoleReader.Int;
            Mod.mod = consoleReader.Int;
            var a = consoleReader.Split.Int.Select(i => (Mod)i).ToArray();
            var b = a.ToArray();
            for (int i = 1; i < b.Length; i++)
                b[i] += b[i - 1];

            long count = 0;

            for (int i = 0; i < b.Length; i++)
                if (b[i] == 0) count++;

            for (int i = 1; i < b.Length; i++)
                for (int j = i; j < b.Length; j++)
                {
                    if (b[j] - b[i - 1] == 0) count++;
                }
            return count;
        }
        struct Mod : IEquatable<Mod>
        {
            public static long mod = 1000000007;
            public readonly long val;
            public Mod(long val) { this.val = val % mod; }
            public override bool Equals(object obj) => (obj is Mod) ? this == ((Mod)obj) : false;
            public bool Equals(Mod obj) => this == obj;
            public override int GetHashCode() => val.GetHashCode();
            public override string ToString() => val.ToString();
            public static implicit operator Mod(long x) => new Mod(x);
            public static Mod operator +(Mod x, Mod y) => (x.val + y.val) % mod;
            public static Mod operator -(Mod x, Mod y) => x.val >= y.val ? (x.val - y.val) % mod : (x.val - y.val) % mod + mod;
            public static Mod operator *(Mod x, Mod y) => (x.val * y.val) % mod;
            public static Mod operator /(Mod x, Mod y) => x * y.Inverse();
            public static bool operator ==(Mod x, Mod y) => x.val == y.val;
            public static bool operator !=(Mod x, Mod y) => x.val != y.val;
            public Mod Inverse()
            {
                long a = val, b = mod, u = 1, v = 0;
                while (b > 0)
                {
                    long t = a / b;
                    var b2 = a - t * b;
                    a = b; b = b2;
                    var v2 = u - t * v;
                    u = v; v = v2;
                }
                u %= mod;
                if (u < 0) u += mod;
                return u;
            }
            public static Mod Pow(Mod x, int y)
            {
                Mod res = 1;
                for (; y > 0; y >>= 1)
                {
                    if ((y & 1) == 1) res *= x;
                    x *= x;
                }
                return res;
            }

            public static Factor CreateFactor(int max) => new Factor(max);
            public class Factor
            {
                private readonly Mod[] fac, finv;
                public Factor(int max)
                {
                    var inv = new Mod[max];
                    fac = new Mod[max]; finv = new Mod[max];
                    fac[0] = fac[1] = 1;
                    finv[0] = finv[1] = 1;
                    inv[1] = 1;
                    for (int i = 2; i < max; i++)
                    {
                        fac[i] = fac[i - 1] * i;
                        inv[i] = mod - inv[mod % i].val * (mod / i) % mod;
                        finv[i] = finv[i - 1] * inv[i];
                    }
                }

                // 二項係数計算
                public Mod Combine(int n, int k)
                {
                    if (n < k) return 0;
                    if (n < 0 || k < 0) return 0;
                    return fac[n] * finv[k] * finv[n - k];
                }

                public Mod Factorial(int n) => fac[n];
                public Mod FactorialInvers(int n) => finv[n];
            }
        }


        #region いつもの
        private readonly ConsoleReader consoleReader;
        public Program(ConsoleReader consoleReader) { this.consoleReader = consoleReader; }
        static void Main() => Console.WriteLine(new Program(new ConsoleReader(Console.In)).Calc()); static string AllLines<T>(IEnumerable<T> source) => string.Join("\n", source);
        #endregion
    }

#pragma warning disable
    public class ConsoleReader
    {
        private string[] line = Array.Empty<string>();
        private int linePosition;
        private TextReader textReader;
        public ConsoleReader(TextReader tr) { textReader = tr; }
        public int Int => int.Parse(String);
        public long Long => long.Parse(String);
        public double Double => double.Parse(String);
        public string String
        {
            get
            {
                if (linePosition >= line.Length)
                {
                    linePosition = 0;
                    line = textReader.ReadLine().Split();
                }
                return line[linePosition++];
            }
        }
        public class SplitLine
        {
            private string[] splited;
            public SplitLine(ConsoleReader cr) { splited = cr.textReader.ReadLine().Split(); }
            public int[] Int => String.Select(x => int.Parse(x)).ToArray();
            public long[] Long => String.Select(x => long.Parse(x)).ToArray();
            public double[] Double => String.Select(x => double.Parse(x)).ToArray();
            public string[] String => splited;
        }
        public SplitLine Split => new SplitLine(this);
        public class RepeatReader
        {
            ConsoleReader cr; int count;
            public RepeatReader(ConsoleReader cr, int count) { this.cr = cr; this.count = count; }
            public IEnumerable<T> Select<T>(Func<ConsoleReader, T> func) { for (int i = 0; i < count; i++) yield return func(cr); }
            public IEnumerable<string> String { get { for (int i = 0; i < count; i++) yield return cr.String; } }
            public IEnumerable<int> Int { get { for (int i = 0; i < count; i++) yield return cr.Int; } }
            public IEnumerable<double> Double { get { for (int i = 0; i < count; i++) yield return cr.Double; } }
        }
        public RepeatReader Repeat(int count) => new RepeatReader(this, count);
    }
}