import java.io.IOException; import java.io.InputStream; import java.util.Arrays; import java.util.HashMap; import java.util.Map; import java.util.NoSuchElementException; class Main { public static void main(String[] args) throws Exception { new Main().run(); } void run() { Scanner sc=new Scanner(); int N=sc.nextInt(); int M=sc.nextInt(); long K=sc.nextLong(); char op=sc.next().toCharArray()[0]; long[] A=new long[N]; long[] B=new long[M]; for(int i=0;i ma=new HashMap<>(); HashMap mb=new HashMap<>(); for(int i=0;i a:ma.entrySet()) { for(Map.Entry b:mb.entrySet()) { if(a.getKey()*b.getKey()%K==0) { ans+=a.getValue()*b.getValue(); } } } }else { for(int i=0;i ma=new HashMap<>(); HashMap mb=new HashMap<>(); for(int i=0;i a:ma.entrySet()) { if(mb.containsKey((K-a.getKey())%K))ans+=mb.get(K-a.getKey())*a.getValue(); } } System.out.println(ans); } long gcd(long a,long b) { return a==0?b:gcd(b%a,a); } int binarySearch(long[] a,long key) { int ok=a.length; int ng=-1; while(ok-ng>1) { int middle=(ok+ng)/2; if(a[middle]>=key)ok=middle; else ng=middle; } return ok; } static void tr(Object... objects) { System.out.println(Arrays.deepToString(objects)); } } class Scanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; }else{ ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();} public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while(isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){ return minus ? -n : n; }else{ throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next());} }