#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

ll sum[305][305];
ll cur[305];

int main(){
    //freopen("in.txt","r",stdin);
    int n,m;
    ll a,b;
    scanf("%d %d %lli %lli",&n,&m,&a,&b);
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=m;j++){
            scanf("%lli",&sum[i][j]);
            sum[i][j]+=sum[i-1][j];
        }
    }
    /*
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=m;j++){
            printf("%lli ",sum[i][j]);
        }
        printf("\n");
    }
    */
    ll ans = 0;
    ll l,r;
    ll c1,c2;
    for(int x = 1;x<=n;x++){
        for(int y = x;y<=n;y++){
            for(int i = 1;i<=m;i++){
                cur[i]=sum[y][i]-sum[x-1][i],cur[i]+=cur[i-1];
            }
            l=0,r=0;
            for(int i = 1;i<=m;i++){
                c1=max(0LL,cur[i]-b);
                c2=cur[i]-a;
                while(cur[l]<c1)l++;
                while(cur[r]<=c2)r++;
                ans+=r-l;
            }
        }
    }
    printf("%lli\n",ans);
    return 0;
}