Submission #141428

#	Time	Username	Problem	Language	Result	Execution time	Memory
141428		meatrow	Baloni (COCI15_baloni)	C++17	100 / 100	127 ms	7416 KiB

baloni

//#pragma GCC optimize("O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
//#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>

using namespace std;

using ll = long long;


int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n;
    cin >> n;
    vector<int> h(n);
    for (int i = 0; i < n; i++) {
        cin >> h[i];
    }
    unordered_map<int, int> a;
    int ans = 0;
    for (int i = 0; i < n; i++) {
        if (a[h[i]]) {
            a[h[i]]--;
        } else {
            ans++;
        }
        a[h[i] - 1]++;
    }
    cout << ans;
    return 0;
}

• Subtask 1: 100 / 100