oj.uz

Submission #603327

# Submission time Handle Problem Language Result Execution time Memory
603327 2022-07-24T02:55:09 Z tamthegod Money (IZhO17_money) C++14
0 / 100
 20 ms 8160 KB 
#include<bits/stdc++.h>

#define int long long
#define pb push_back
#define fi first
#define se second
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 1e6 + 5;
const int mod = 1e9 + 7;
const ll oo = 1e18;
int n, a[maxN];
int bit[maxN];
void update(int pos, int val)
{
    while(pos < maxN)
    {
        bit[pos] += val;
        pos += (pos & (-pos));
    }
}
int get(int pos)
{
    int res = 0;
    while(pos)
    {
        res += bit[pos];
        pos -= (pos & (-pos));
    }
    return res;
}
void ReadInput()
{
    cin >> n;
    for(int i=1; i<=n; i++) cin >> a[i];
}
void Solve()
{
    for(int i=1; i<maxN; i++) update(i, 1);
    int res = 1;
    for(int i=1; i<=n; i++)
    {
        update(a[i], -1);
        if(a[i] < a[i - 1])
        {
            res++;
            continue;
        }
        if(get(a[i] - 1) - get(a[i - 1]) != (a[i] - a[i - 1] - 1)) res++;
    }
    cout << res;
}
int32_t main()
{
    //freopen("x.inp", "r", stdin);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    ReadInput();
    Solve();
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 8160 KB Output is correct
2 Correct 19 ms 8072 KB Output is correct
3 Correct 20 ms 8116 KB Output is correct
4 Correct 19 ms 8136 KB Output is correct
5 Correct 18 ms 8088 KB Output is correct
6 Correct 18 ms 8088 KB Output is correct
7 Incorrect 19 ms 8140 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 8160 KB Output is correct
2 Correct 19 ms 8072 KB Output is correct
3 Correct 20 ms 8116 KB Output is correct
4 Correct 19 ms 8136 KB Output is correct
5 Correct 18 ms 8088 KB Output is correct
6 Correct 18 ms 8088 KB Output is correct
7 Incorrect 19 ms 8140 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 8160 KB Output is correct
2 Correct 19 ms 8072 KB Output is correct
3 Correct 20 ms 8116 KB Output is correct
4 Correct 19 ms 8136 KB Output is correct
5 Correct 18 ms 8088 KB Output is correct
6 Correct 18 ms 8088 KB Output is correct
7 Incorrect 19 ms 8140 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 8160 KB Output is correct
2 Correct 19 ms 8072 KB Output is correct
3 Correct 20 ms 8116 KB Output is correct
4 Correct 19 ms 8136 KB Output is correct
5 Correct 18 ms 8088 KB Output is correct
6 Correct 18 ms 8088 KB Output is correct
7 Incorrect 19 ms 8140 KB Output isn't correct
8 Halted 0 ms 0 KB -