Submission #677502

#	Time	Username	Problem	Language	Result	Execution time	Memory
677502		stanislavpolyn	Measures (CEOI22_measures)	C++17	24 / 100	1573 ms	3620 KiB

Main

#include <bits/stdc++.h>

#define fr(i, a, b) for (int i = (a); i <= (b); ++i)
#define rf(i, a, b) for (int i = (a); i >= (b); --i)
#define fe(x, y) for (auto& x : y)

#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define mt make_tuple

#define all(x) (x).begin(), (x).end()
#define pw(x) (1LL << (x))
#define sz(x) (int)(x).size()

using namespace std;

mt19937_64 rng(228);

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template <typename T>
using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define fbo find_by_order
#define ook order_of_key

template <typename T>
bool umn(T& a, T b) {
    return a > b ? (a = b, 1) : 0;
}
template <typename T>
bool umx(T& a, T b) {
    return a < b ? (a = b, 1) : 0;
}

using ll = long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template <typename T>
using ve = vector<T>;

const int N = 4e5 + 5;

int n, m;
ll D;
ll a[N];
ll b[N];
ll d[N];
ll suff[N];

int rnd(int l, int r) {
    return rng() % (r - l + 1) + l;
}

ll T[N];

//bool subtask = 1;

//ve<ll> v;
//ve<ll> pos;

//void add(ll x) {
//    assert(is_sorted(all(v)));
//    int idx = sz(v) - 1;
//    fr (i, 0, sz(v) - 1) {
//        if (x > v[i]) {
//            idx = i - 1;
//            break;
//        }
//    }
//
//    ll myPos = -1;
//    if (idx - 1 >= 0) {
//        myPos = max(x, pos[idx - 1] + D);
//    } else {
//        myPos = x;
//    }
//}

int main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#else
    ios::sync_with_stdio(0);
    cin.tie(0);
#endif

    cin >> n >> m >> D;

    D *= 2;

    fr (i, 1, n) {
        cin >> a[i];
//        a[i] = rnd(1, int(100));
        a[i] *= 2;
    }

//    sort(a + 1, a + 1 + n);
//    fr (i, 1, n) {
//        pos[]
//    }

    ll last = -1;

    fr (i, 1, m) {
        ll x;
        cin >> x;
        x *= 2;

//        x *= 2;
        a[++n] = x;
        sort(a + 1, a + 1 + n);

        ll last = a[1];
        ll ans = 0;
        fr (j, 2, n) {
            if (a[j] - last >= D) {
                last = a[j];
                continue;
            }
            umx(ans, abs(a[j] - (last + D)));
            last += D;
        }
//        cout << ans << "\n";
//
//        auto possible = [&](ll t, bool flag = 0) {
//            fr (i, 1, n) b[i] = a[i];
//
//            fr (i, 1, n) {
//                ll have = t;
//                if (i > 1) {
//                    ll x = b[i] - b[i - 1];
//                    if (x < D) {
//                        if (D - x > t) {
//                            return 0;
//                        }
//                        have -= max(0LL, D - x);
//                        b[i] = b[i - 1] + D;
//                    }
//                }
//                if (i == 1 || b[i] - b[i - 1] > D) {
//                    if (i == 1) b[i] -= t;
//                    else b[i] -= min(b[i] - b[i - 1] - D, have);
//                }
//            }
//            if (flag) {
//                fr (i, 1, n) {
//                    if (b[i] < a[i]) cout << "-1 ";
//                    else cout << "+1 ";
//                }
//                cout << "\n";
//            }
//
//            return 1;
//        };
//
//        ll l = 0;
//        ll r = 2e18;
//        while (l < r) {
//            ll mid = l + ((r - l) >> 1);
//            if (possible(mid)) {
//                r = mid;
//            } else {
//                l = mid + 1;
//            }
//        }
//        assert(possible(l));
//
//
//        possible(l, 1);
////        l /= 2;

        ans /= 2;

        cout << ans / 2;
        if (ans % 2) cout << ".5";
        cout << "\n";

    }

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:106:8: warning: unused variable 'last' [-Wunused-variable]
  106 |     ll last = -1;
      |        ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 14 / 14
• Subtask 3: 0 / 35
• Subtask 4: 0 / 41