Submission #106971

# Submission time Handle Problem Language Result Execution time Memory
106971 2019-04-21T10:49:46 Z golub Gap (APIO16_gap) C++14
70 / 100
91 ms 3324 KB
#include "gap.h"
#include<bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define F first
#define S second
#define pb push_back
#define pii pair<long long, long long>
#define len(x) (long long)x.size()

template<typename A, typename B>
bool cmax(A &a, const B &b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

template<typename A, typename B>
bool cmin(A &a, const B &b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

int askcount = 0;

pii ask(long long s, long long t) {
	askcount++;
	long long mn = 0, mx = 0;
	MinMax(s, t, &mn, &mx);
	return {mn, mx};
}

int stupid_solve(int N) {
	vector<long long> a(N);
	long long itr1 = 0, itr2 = N - 1;
	long long l = -1, r = (long long)1e18 + 1;
	while (itr1 <= itr2) {
		pii res = ask(l, r);
		assert(res.F != -1);
		assert(res.S != -1);
		a[itr1++] = res.F;
		a[itr2--] = res.S;
		l = res.F + 1;
		r = res.S - 1;
	}
	long long best = -1;
	sort(all(a));
	// for (auto x: a) cout << x << "\n";
	for (int i = 0; i < N - 1; i++) {
		cmax(best, a[i + 1] - a[i]);
	}
	return best;
}

long long findGap(int T, int N) {
	if (T == 1) return stupid_solve(N);
	vector<long long> a;
	long long l = -1, r = (long long)1e18 + 1;
	MinMax(l, r, &l, &r);
	a.pb(l); a.pb(r);
	long long dx = (r - l) / (N - 1);
	long long MAX = r;
	r = l + dx;
	while (l < MAX) {
		pii res = ask(l, r);
		if (res.F != -1) a.pb(res.F);
		if (res.S != -1) a.pb(res.S);
		l += dx + 1;
		r += dx + 1;
	}
	long long best = -1;
	sort(all(a));
	// for (auto x: a) cout << x << "\n";
	for (int i = 0; i < len(a) - 1; i++) {
		cmax(best, a[i + 1] - a[i]);
	}
	return best;
}
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Incorrect 2 ms 384 KB Output isn't correct
3 Incorrect 2 ms 384 KB Output isn't correct
4 Incorrect 2 ms 384 KB Output isn't correct
5 Correct 2 ms 384 KB Output is correct
6 Incorrect 2 ms 384 KB Output isn't correct
7 Incorrect 2 ms 384 KB Output isn't correct
8 Incorrect 3 ms 256 KB Output isn't correct
9 Incorrect 2 ms 384 KB Output isn't correct
10 Correct 2 ms 384 KB Output is correct
11 Incorrect 4 ms 384 KB Output isn't correct
12 Incorrect 3 ms 384 KB Output isn't correct
13 Incorrect 4 ms 384 KB Output isn't correct
14 Incorrect 3 ms 384 KB Output isn't correct
15 Correct 3 ms 384 KB Output is correct
16 Incorrect 15 ms 768 KB Output isn't correct
17 Incorrect 19 ms 768 KB Output isn't correct
18 Incorrect 16 ms 768 KB Output isn't correct
19 Incorrect 15 ms 768 KB Output isn't correct
20 Correct 12 ms 768 KB Output is correct
21 Incorrect 55 ms 1912 KB Output isn't correct
22 Incorrect 57 ms 1884 KB Output isn't correct
23 Incorrect 57 ms 1912 KB Output isn't correct
24 Incorrect 58 ms 1928 KB Output isn't correct
25 Correct 49 ms 1912 KB Output is correct
26 Incorrect 52 ms 1920 KB Output isn't correct
27 Incorrect 49 ms 1912 KB Output isn't correct
28 Incorrect 50 ms 1920 KB Output isn't correct
29 Incorrect 58 ms 1912 KB Output isn't correct
30 Correct 59 ms 1912 KB Output is correct
31 Incorrect 2 ms 384 KB Output isn't correct
32 Incorrect 3 ms 384 KB Output isn't correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 16 ms 896 KB Output is correct
17 Correct 19 ms 896 KB Output is correct
18 Correct 23 ms 1024 KB Output is correct
19 Correct 20 ms 896 KB Output is correct
20 Correct 9 ms 512 KB Output is correct
21 Correct 91 ms 2416 KB Output is correct
22 Correct 70 ms 2420 KB Output is correct
23 Correct 73 ms 2288 KB Output is correct
24 Correct 79 ms 2288 KB Output is correct
25 Correct 73 ms 3324 KB Output is correct
26 Correct 74 ms 2288 KB Output is correct
27 Correct 69 ms 2288 KB Output is correct
28 Correct 73 ms 2260 KB Output is correct
29 Correct 74 ms 2264 KB Output is correct
30 Correct 54 ms 1500 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct