Array

#include <bits/stdc++.h>

#define i64 long long
#define u64 unsigned long long
#define i32 int
#define u32 unsigned int

#define pii pair<int, int>
#define pll pair<long long, long long>

#define defmod 1000000007
using namespace std;


int main(){
	cin.sync_with_stdio(0);
	cin.tie(0);
	
	int n, x; cin >> n >> x;
	i64 a[101010];
	for(int i = 0; i < n; i++)
		cin >> a[i];
	i64 s[101010] = {0};
	s[0] = a[0];

	unordered_map<i64, int> sums;
	
	vector<i64> remo;
	for(int i = 1; i < n; i++){
		s[i] = s[i-1]+a[i];
	}
	for(int i = 0; i < n; i++){
		sums[s[i]]++;
		remo.push_back(s[i]);
	}
	i64 rem = 0;
	int re = 0;
	for(int i = 0; i < n; i++){
		//cout << i << ": " << endl;
		//for(auto f: sums)
		//	cout << f.first-rem << " ";
		//cout << endl;
		re+=sums[x+rem];
		rem+=a[i];
		sums[remo[i]]--;
	}
	cout << re << endl;
	return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: WRONG ANSWER