oj.uz

Submission #950031

# Submission time Handle Problem Language Result Execution time Memory
950031 2024-03-20T03:45:59 Z Pragmatism Money (IZhO17_money) C++17
0 / 100
 0 ms 600 KB 
//Bismillahir-Rahmanir-Rahim

#include <bits/stdc++.h>
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#pragma GCC target("sse,sse2,sse3,sse4,sse4.1,sse4.2,popcnt,avx,avx2")

#define pb push_back
#define pii pair <int, int>
#define pll pair <long long, long long>
#define pld pair <long double, long double>
#define ll long long
#define ld long double
#define x first
#define y second
#define all(v) v.begin(),v.end()
#define sz(s) (int)s.size()
#define skip continue
#define bpop(x) (ll)__builtin_popcountll(x)

using namespace std;

const int N = 1e6 + 7;
const int M = 1e5 + 7;
const int maxA = 1e5 + 7;
const int inf = 1e9 + 7;
const ll INF = 2e18 + 7;
const int MOD = 998244353;
const ld eps = 1e-9;

pii dir[] = {{0, 1}, {1, 0}, {0, -1}, {-1, 0}};

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//clock_t start = clock();

//#define int long long

int n, a[N];
int calc() {
    multiset <int> st;
    for (int i = 1;i <= n;i++)st.insert(a[i]);
    int ans = 0;
    for (int i = 1;i <= n;) {
        int pos = i;
        auto it = st.lower_bound(a[i]);
        while (pos < n) {
            if (it != st.begin() && a[pos + 1] == *prev(it))it = prev(it), pos++;
            else if (a[pos + 1] == a[i])pos++;
            else break;
        }
        for (int j = i;j <= pos;j++)st.erase(st.find(a[j]));
        i = pos + 1, ans++;
    }
    return ans;
}
void solve() {
    cin >> n;
    for (int i = 1;i <= n;i++)cin >> a[i];
    reverse(a + 1, a + n + 1);
    cout << calc();
}
signed main() {
    //srand(time(NULL));
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("subsequence.in", "r", stdin);
    //freopen("subsequence.out", "w", stdout);
    int test = 1;
    //cin >> test;
    for (int t = 1;t <= test;t++) {
        //cout << "Case " << t << ": ";
        solve();
    }
    return 0;
}

Compilation message

money.cpp:4: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    4 | #pragma comment(linker, "/stack:200000000")
      |

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Halted 0 ms 0 KB -