export {};
const input = require("fs").readFileSync(0).toString().trim().split('\n');

const T: number = Number(input[0]);
const [n, m]: number[] = [Number(input[1]), Number(input[3])];
const A: number[] = input[2].split(" ").map(Number);
const B: number[] = input[4].split(" ").map(Number);

let sumA: number[] = [];
for(let i=0; i<n; i++) {
    let temp: number = 0
    for(let j=i; j<n; j++) {
        temp += A[j];
        sumA.push(temp);
    }
}

let sumB: number[] = [];
for(let i=0; i<m; i++) {
    let temp: number = 0
    for(let j=i; j<m; j++) {
        temp += B[j];
        sumB.push(temp);
    }
}

sumA.sort((a,b) => a - b);
sumB.sort((a,b) => b - a);
const [N, M]: number[] = [sumA.length, sumB.length];

let [ptA, ptB]: number[] = [0, 0];
let ans: number = 0;

while (ptA < N && ptB < M) {
    const curr: number = sumA[ptA] + sumB[ptB];

    if(curr !== T ) {
        if(T > curr) ptA++;
        else if(T < curr) ptB++;
        continue;
    }

    let cntA: number = 0;
    let valA: number = sumA[ptA];
    while(ptA < N && sumA[ptA] === valA) {
        cntA++;
        ptA++;
    }

    let cntB: number = 0;
    let valB: number = sumB[ptB];
    while(ptB < M && sumB[ptB] === valB) {
        cntB++;
        ptB++;
    }

    ans += cntA*cntB;
}

console.log(ans);