Submission #47371

#	Time	Username	Problem	Language	Result	Execution time	Memory
47371		nickyrio	Lightning Conductor (POI11_pio)	C++17	0 / 100	2 ms	452 KiB

pio

//https://oj.uz/problem/view/POI11_pio
#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define FORD(i, a, b) for (int i = (a); i >= (b); --i)
#define REP(i, a) for (int i = 0; i < (a); ++i)
#define DEBUG(x) { cerr << #x << '=' << x << endl; }
#define Arr(a, l, r) { cerr << #a << " = {"; FOR(_, l, r) cerr << ' ' << a[_]; cerr << "}\n"; }
#define N 500100
#define pp pair<int, int>
#define endl '\n'
#define IO ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define taskname ""
#define bit(S, i) (((S) >> (i)) & 1)
using namespace std;

int n, lg[N];
long long h[N], MAX[N][20];

void Build() {
    FOR(i, 1, n) MAX[i][0] = h[i];
    FOR(i, 1, n) lg[i] = log2(i);
    FOR(j, 1, lg[n]) FOR(i, 1, n) if (i + (1 << j) - 1 <= n) {
        MAX[i][j] = max(MAX[i][j - 1], MAX[i + (1 << (j - 1))][j - 1]);
    }
}

long long Get(int l, int r) {
    int d = lg[r - l + 1];
    return max(MAX[l][d], MAX[r - (1 << d) + 1][d]);
}

int main() {
    #ifdef NERO
    freopen("test.inp","r",stdin);
    freopen("test.out","w",stdout);
    double stime = clock();
    #else
        //freopen(taskname".inp","r",stdin);
        //freopen(taskname".out","w",stdout);
    #endif //NERO
    IO;
    cin >> n;
    FOR(i, 1, n) cin >> h[i];
    Build();
    FOR(i, 1, n) {
        int bef = i;
        long long need = 0;
        FOR(j, 1, n) {
            long long LEFT = max(1ll, 1ll * i - 1ll * j * j);
            if (LEFT >= bef) break;
            need = max(need, - h[i] + Get(LEFT, bef - 1) + j);
            if (LEFT == 1) break;
            bef = LEFT;
        }
        bef = i;
        FOR(j, 1, n) {
            long long RIGHT = min(1ll * n, 1ll * i + 1ll * j * j);
            if (RIGHT <= bef) break;
            need = max(need, - h[i] + Get(bef + 1, RIGHT) + j);
            if (RIGHT == n) break;
            bef = RIGHT;
        }
        cout << need << '\n';
    }
    #ifdef NERO
    double etime = clock();
    cerr << "Execution time: " << (etime - stime) / CLOCKS_PER_SEC * 1000 << " ms.\n";
    #endif // NERO
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 9
• Subtask 8: 0 / 9
• Subtask 9: 0 / 9
• Subtask 10: 0 / 9
• Subtask 11: 0 / 10