Submission #249903

#	Time	Username	Problem	Language	Result	Execution time	Memory
249903		receed	Gap (APIO16_gap)	C++14	70 / 100	76 ms	1272 KiB

gap

#include "gap.h"
#include <vector>
#include <algorithm>
#include <iostream>

using namespace std;
using ll = long long;

ll findGap(int t, int n) {
    ll l, r, x, y, ls;
    MinMax(0, 1'000000'000000'000000, &l, &r);
    if (t == 2) {
        ll ans = (r - l + n - 2) / (n - 1), d = ans;
        ls = l;
        for (int i = 0; i < n - 1; i++) {
            ll lp = l + 1 + d * i, rp = l + d * (i + 1);
            if (lp >= r)
                break;
            rp = min(rp, r);
            MinMax(lp, rp, &x, &y);
            if (y != -1) {
                ans = max(ans, x - ls);
                ls = y;
            }
        }
        ans = max(ans, r - ls);
        return ans;
    }
    else {
        ll ans = 0;
        while (r - l > 1) {
            MinMax(l + 1, r - 1, &x, &y);
            if (x == -1) {
                ans = max(ans, r - l);
                break;
            }
            ans = max(ans, x - l);
            ans = max(ans, r - y);
            l = x;
            r = y;
        }
        return ans;
    }
}

• Subtask 1: 0 / 30
• Subtask 2: 70 / 70