Submission #731218

#	Time	Username	Problem	Language	Result	Execution time	Memory
731218		hngwlog	Gap (APIO16_gap)	C++14	30 / 100	3075 ms	22116 KiB

gap

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

long long findGap(int t, int n) {

    vector<long long> a(n + 1);
    if (t == 1) {
        long long mi = - 1, ma = (long long)1e18 + 1;
        int l = 1;
        int r = n;
        while (l <= r) {
            MinMax(mi + 1, ma - 1, &mi, &ma);
            a[l] = mi, a[r] = ma;
            l++, r--;
        }
        long long ans = 0;
        for (int i = 2; i <= n; i++) ans = max(ans, a[i] - a[i - 1]);
        return ans;
    }
    long long ans = 0;
    long long mi = - 1, ma = (long long)1e18 + 1;
    MinMax(mi + 1, ma - 1, &mi, &ma);
    long long start = mi;
    long long maxx = ma;
    long long res = (ma - mi) / (n - 1);
    while (mi != maxx) {
        int cnt = 1;
        long long cur_mi = mi;
        long long fp = ((mi - start) / res + ((mi - start) % res ? 1 : 0)) * (res + 1) + start;
        cerr << "BEFORE: " << fp << " " << fp + res - 1 << '\n';
        MinMax(fp, fp + res - 1, &mi, &ma);
        cerr << mi << ' ' << ma << '\n' << '\n';
        while (mi == - 1) {
            cerr << "BEFORE: " << fp << " " << fp + res * (cnt + 1) - 1 << '\n';
            MinMax(fp, fp + res * (++cnt) - 1, &mi, &ma);
            cerr << mi << ' ' << ma << '\n' << '\n';
        }
        ans = max(ans, mi - cur_mi);
        mi = ma;
    }
    return ans;
}

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