oj.uz

Submission #971888

# Submission time Handle Problem Language Result Execution time Memory
971888 2024-04-29T12:45:45 Z Sunbae Vudu (COCI15_vudu) C++17
42 / 140
 117 ms 30896 KB 
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
const int N = 4e5 + 5;
int m;
ll bit[N], qs[N], P;
vector<ll> cp; 
int pos(ll x){return upper_bound(cp.begin(), cp.end(), x) - cp.begin();}
void upd(int i){for(; i<=m; i+=i&-i) ++bit[i];}
ll qry(int i){ll res = 0; for(; i; i-=i&-i) res += bit[i]; return res;}
signed main(){
	int n; scanf("%d", &n);
	for(int i = 1; i<=n; ++i){
		scanf("%lld", qs+i);
		qs[i] += qs[i-1];
	}
	scanf("%lld", &P);
	for(ll i = 0; i<=n; ++i) cp.push_back(qs[i] - P*i);
	sort(cp.begin(), cp.end()); cp.resize(unique(cp.begin(), cp.end()) - cp.begin()); m = cp.size();
	upd(pos(0));
	ll Ans = 0;
	for(ll i = 1; i<=n; ++i){
		int x = pos(qs[i] - P*i);
		Ans += qry(x);
		upd(x);
	}
	printf("%lld", Ans);
}

Compilation message

vudu.cpp: In function 'int main()':
vudu.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  int n; scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
vudu.cpp:14:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |   scanf("%lld", qs+i);
      |   ~~~~~^~~~~~~~~~~~~~
vudu.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |  scanf("%lld", &P);
      |  ~~~~~^~~~~~~~~~~~

Subtask #1
42.0 / 140.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2648 KB Output is correct
2 Correct 2 ms 2648 KB Output is correct
3 Correct 2 ms 2652 KB Output is correct
4 Runtime error 87 ms 18908 KB Execution killed with signal 11
5 Runtime error 85 ms 25260 KB Execution killed with signal 11
6 Runtime error 71 ms 18896 KB Execution killed with signal 11
7 Runtime error 72 ms 18772 KB Execution killed with signal 11
8 Runtime error 117 ms 30896 KB Execution killed with signal 11
9 Runtime error 73 ms 18772 KB Execution killed with signal 11
10 Runtime error 70 ms 18772 KB Execution killed with signal 11