Submission #949086

#TimeUsernameProblemLanguageResultExecution timeMemory
949086sondos225Vudu (COCI15_vudu)C++17
28 / 140
449 ms65536 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/tree_policy.hpp> #include <ext/pb_ds/assoc_container.hpp> using namespace std; using namespace __gnu_pbds; template<typename T>using ordered_set = tree<T,null_type,less_equal<T>,rb_tree_tag,tree_order_statistics_node_update>;//find_by_order(ind); //order_of_key() #define int long long #define fast ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL); #define pb push_back #define yes "YES" #define no "NO" #define bigg INT_MAX #define debug(x) cout<<(#x)<<" = " <<x<<endl; #define all(x) x.begin(),x.end() #define sz size() #define nn '\n' #define mms(x,y) memset(x,y,sizeof(x)) #define forr(i,j,n) for (int i=j; i<n; i++) #define forn(i,j,n) for (int i=j; i>n; i--) #define fi first #define se second #define la "LA" #define cinn(x,y) for(int i=0; i<y; i++) cin>>x[i]; #define pii pair<int,int> signed main() { // #ifndef LOCAL // freopen("lifeguards.in","r",stdin); // freopen("lifeguards.out","w", stdout); // #endif fast int n; cin>>n; int a[n]; forr(i,0,n) cin>>a[i]; int p; cin>>p; int sm[n]; sm[0]=a[0]; //int b[n]; //b[0]=sm[0]; //vector<int> s; ordered_set<int> s; // s.pb(0); s.insert(a[0]-p); s.insert(0); int ans=0; forr(i,1,n) { sm[i]=sm[i-1]+a[i]; int x=sm[i]-(p*(i+1)); // sort(all(s)); //cout<<no<<x<<endl; // for(auto y:s) cout<<la<<y<<endl; //cout<<x<<endl; int w=s.order_of_key(x+1); //w--; // cout<<w<<endl; s.insert(x); // (lower_bound(all(s),x+1)-s.begin()); //w--; // int d= // if (w==s.sz) w=0; // w++; // cout<<w<<endl; ans+=max(0ll,w); // b[i]=; } cout<<ans; return 0; }
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