Submission #1056847

#	Time	Username	Problem	Language	Result	Execution time	Memory
1056847		tkvinhtruongquang	A Huge Tower (CEOI10_tower)	C++14	100 / 100	74 ms	8260 KiB

tower

#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pb push_back
#define pf push_front
#define sz(x) int(x.size())
#define all(x) x.begin(), x.end()
#define clz __builtin_clz
#define popcount __builtin_popcount
#define lb(x) lower_bound(x)
#define ub(x) upper_bound(x)
#define loop(i, j, n, k) for(int i = j; i <= n; i += k)
#define fast ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0)

template <typename T>
inline void print(T x) { cerr << x << endl; }
template <typename T>
inline void print(vector <T> x) { cerr << '['; loop(i, 0, sz(x) - 2, 1) cerr << x[i] << ", "; cerr << x.back() << ']' << endl; }
template <typename T>
inline bool maximize(T &a, const T &b) { return a < b ? (a = b) : 0; }
template <typename T>
inline bool minimize(T &a, const T &b) { return a > b ? (a = b) : 0; }

using ll = long long;
using vi = vector<int>;
using pii = pair<int, int>;
using pss = pair<string, string>;
using vll = vector<ll>;
using pll = pair<ll, ll>;

#define debug(x) cerr << #x << " = "; print(x)

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
    freopen("error.txt", "w", stderr);
}

const int mod = 1e9 + 9;

namespace sub1 {
    int n;
    int k;
    vi arr;
    vi per;

    void input(int _k, vi &_arr) {
        arr = _arr;
        k = _k;
        n = sz(arr);
        loop(i, 0, n - 1, 1) per.pb(i);
    }

    void solve() {
        int ans = 0;

        do {
            bool check = true;

            loop(i, 1, n - 1, 1) {
                if(arr[per[i]] > arr[per[i - 1]] + k) {
                    check = false;
                    break;
                }
            }

            ans += check;
        } while(next_permutation(all(per)));

        cout << ans;
    }

}

int main() {
    // setIO("task");

    fast;
    int n, k; cin >> n >> k;
    vi arr(n); for(auto &i : arr) cin >> i; 
    sort(all(arr));

    int r = 0, sol = 1;
    loop(l, 0, n - 1, 1) {
        while(r < n - 1 && arr[r + 1] <= arr[l] + k) ++ r;
        int dist = r - l + 1;
        sol = (1LL * sol * dist) % mod;
    }

    cout << sol;
}

Compilation message (stderr)

tower.cpp: In function 'void setIO(std::string)':
tower.cpp:36:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tower.cpp:37:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tower.cpp:38:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     freopen("error.txt", "w", stderr);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 5 / 5
• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
• Subtask 12: 5 / 5
• Subtask 13: 5 / 5
• Subtask 14: 5 / 5
• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
• Subtask 17: 5 / 5
• Subtask 18: 5 / 5
• Subtask 19: 5 / 5
• Subtask 20: 5 / 5