oj.uz

Submission #335631

# Submission time Handle Problem Language Result Execution time Memory
335631 2020-12-13T11:34:14 Z Joshc Vudu (COCI15_vudu) C++11
42 / 140
 322 ms 27592 KB 
#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;
 
#define f first
#define s second

long long int l[1000001];
int bit[1000001], m[1000001];
 
int main() {
    long long int n, p, count=1, ans=0;
    scanf("%lld", &n);
    for (int i=1; i<=n; i++) scanf("%lld", &l[i]);
    scanf("%lld", &p);
    l[0] = 0;
    for (int i=1; i<=n; i++) l[i] = l[i-1]+l[i]-p;
    vector<pair<int, int> > arr;
    for (int i=0; i<=n; i++) arr.emplace_back(l[i], i);
    sort(arr.begin(), arr.end());
    m[arr[0].s] = 1;
    for (int i=1; i<=n; i++) {
        if (arr[i].f != arr[i-1].f) m[arr[i].s] = ++count;
        else m[arr[i].s] = count;
    }
    for (int i=n; i>=0; i--) {
        for (long long int j=m[i]; j<=n; j+=j&-j) bit[j]++;
        for (long long int j=m[i]-1; j>0; j-=j&-j) ans += bit[j];
    }
    printf("%lld\n", n*(n+1)/2-ans);
}

Compilation message

vudu.cpp: In function 'int main()':
vudu.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |     scanf("%lld", &n);
      |     ~~~~~^~~~~~~~~~~~
vudu.cpp:15:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 |     for (int i=1; i<=n; i++) scanf("%lld", &l[i]);
      |                              ~~~~~^~~~~~~~~~~~~~~
vudu.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |     scanf("%lld", &p);
      |     ~~~~~^~~~~~~~~~~~

Subtask #1
42.0 / 140.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 620 KB Output is correct
2 Correct 2 ms 492 KB Output is correct
3 Correct 2 ms 516 KB Output is correct
4 Incorrect 315 ms 25032 KB Output isn't correct
5 Incorrect 201 ms 13512 KB Output isn't correct
6 Incorrect 282 ms 20524 KB Output isn't correct
7 Incorrect 287 ms 21340 KB Output isn't correct
8 Incorrect 269 ms 18504 KB Output isn't correct
9 Incorrect 322 ms 27592 KB Output isn't correct
10 Incorrect 289 ms 20808 KB Output isn't correct