#include <bits/stdc++.h> using namespace std; typedef long long ll; const int mxN = 1e6+10; int BIT[mxN], N, P; vector<ll> A, APR; void add(int idx, int delta) { for (; idx <= N; idx += idx & -idx) BIT[idx] += delta; } int query(int idx) { int ret = 0; for (; idx > 0; idx -= idx & -idx) ret += BIT[idx]; return ret; } void solve() { scanf("%d", &N); A.resize(N); for (auto& a : A) scanf("%lld", &a); scanf("%d", &P); ll sum = 0; for (auto& a : A) { a -= P; sum += a; APR.push_back(sum); } sort(APR.begin(), APR.end()); for (int i = 0; i < N; i++) { add(N - i, 1); } sum = 0; ll ans = 0; for (auto a : A) { ans += query(APR.end() - lower_bound(APR.begin(), APR.end(), sum)); sum += a; add(APR.end() - lower_bound(APR.begin(), APR.end(), sum), -1); } printf("%lld", ans); } int main() { solve(); }

vudu.cpp: In function 'void solve()':
vudu.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  scanf("%d", &N);
      |  ~~~~~^~~~~~~~~~
vudu.cpp:25:25: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |  for (auto& a : A) scanf("%lld", &a);
      |                    ~~~~~^~~~~~~~~~~~
vudu.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |  scanf("%d", &P);
      |  ~~~~~^~~~~~~~~~