#pragma GCC optimize("O2")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2,fma,tune=native")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll ,ll > pii;
typedef long double ld;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll maxn = 1e6+100;
const ll mod =1e9+7;
const ld PI = acos((ld)-1);
#define pb(x) push_back(x);
#define endl '\n'
#define dokme(x) return(cout << x , 0);
#define migmig ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ms(x , y) memset(x , y , sizeof x);
#define file_init freopen("input.txt", "r+", stdin); freopen("output.txt", "w+", stdout);
ll pw(ll a, ll b, ll md = mod){ll res = 1;while(b){if(b&1){res=(a*res)%md;}a=(a*a)%md;b>>=1;}return(res);}
int n , p , ans;
ll a[maxn] , p;
int fen[maxn];
vector < ll > vec;
map < ll , int > mp;
void update(int x){
for(;x<=n ;x+=x&-x)
fen[x]++;
}
int get(int pos){
int ans = 0;
for(;pos;pos-=pos&-pos)
ans+=fen[pos];
return(ans);
}
int main(){
migmig
cin >> n;
for(int i = 1 ; i <= n ; i ++)
cin >> a[i];
cin >> p;
for(int i = 1 ; i <= n ; i ++)
a[i]-=p;
ll sum = 0;
for(int i = 1 ; i <= n ; i ++){
sum+=a[i];
vec.pb(sum);
}
sort(vec.begin() , vec.end());
int cur = 0;
for(auto i : vec){
if(mp[i] == 0)mp[i] = ++cur;
}
swap(n , cur);
sum = 0;
for(int i = 1 ; i <= cur ; i ++){
sum+=a[i];
ans+=get(mp[sum]) + (sum>=0);
update(mp[sum]);
}
cout << ans;
return(0);
}
Compilation message
vudu.cpp:27:14: error: conflicting declaration 'll p'
ll a[maxn] , p;
^
vudu.cpp:26:9: note: previous declaration as 'int p'
int n , p , ans;
^
