oj.uz

Submission #63450

# Submission time Handle Problem Language Result Execution time Memory
63450 2018-08-01T20:17:37 Z qkxwsm Gap (APIO16_gap) C++17
83.5083 / 100
 103 ms 3504 KB 
#include "gap.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

struct chash
{
        int operator()(int x) const
        {
                x ^= (x >> 20) ^ (x >> 12);
                return x ^ (x >> 7) ^ (x >> 4);
        }
        int operator()(long long x) const
        {
                return x ^ (x >> 32);
        }
};

template<typename T> using orderedset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using hashtable = gp_hash_table<T, U, chash>;

template<class T>
void readi(T &x)
{
        T input = 0;
        bool negative = false;
        char c = ' ';
        while (c < '-')
        {
                c = getchar();
        }
        if (c == '-')
        {
                negative = true;
                c = getchar();
        }
        while (c >= '0')
        {
                input = input * 10 + (c - '0');
                c = getchar();
        }
        if (negative)
        {
                input = -input;
        }
        x = input;
}
template<class T>
void printi(T output)
{
        if (output == 0)
        {
                putchar('0');
                return;
        }
        if (output < 0)
        {
                putchar('-');
                output = -output;
        }
        int aout[20];
        int ilen = 0;
        while(output)
        {
                aout[ilen] = ((output % 10));
                output /= 10;
                ilen++;
        }
        for (int i = ilen - 1; i >= 0; i--)
        {
                putchar(aout[i] + '0');
        }
        return;
}
template<class T>
void ckmin(T &a, T b)
{
        a = min(a, b);
}
template<class T>
void ckmax(T &a, T b)
{
        a = max(a, b);
}
template<class T, class U>
T normalize(T x, U mod = 1000000007)
{
	return (((x % mod) + mod) % mod);
}
static long long randomizell(long long mod)
{
        return ((1ll << 45) * rand() + (1ll << 30) * rand() + (1ll << 15) * rand() + rand()) % mod;
}
static int randomize(int mod)
{
        return ((1ll << 15) * rand() + rand()) % mod;
}

#define y0 ___y0
#define y1 ___y1
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define PF push_front
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define debug(x) cerr << #x << " = " << x << endl;

const long double PI = 4.0 * atan(1.0);
const long double EPS = 1e-10;

#define MAGIC 347
#define SINF 10007
#define CO 1000007
#define INF 1000000007
#define BIG 1000000931
#define LARGE 1696969696967ll
#define GIANT 2564008813937411ll
#define LLINF 2696969696969696969ll

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pdd;

pll bound(ll L, ll R)
{
	pll res;
	MinMax(L, R, &res.fi, &res.se);
	return res;
}
long long findGap(int tc, int n)
{
	ll res = 0;
	if (tc == 1)
	{
		ll lo = 0, hi = 1'000'000'000'000'000'000;
		vector<ll> vals;
		for (int i = 0; i < (n + 1) / 2; i++)
		{
			// cerr << lo << ' ' << hi << endl;
			pll cur = bound(lo, hi);
			vals.PB(cur.fi);
			vals.PB(cur.se);
			lo = cur.fi + 1;
			hi = cur.se - 1;
		}
		sort(vals.begin(), vals.end());
		for (int i = 1; i < vals.size(); i++)
		{
			ckmax(res, vals[i] - vals[i - 1]);
		}
		return res;
	}
	//LARGEST value of a_i - a_(i-1)
	vector<ll> nums;
	ll lo, hi;
	pll st = bound(0, 1'000'000'000'000'000'000);
	lo = st.fi; hi = st.se;
	ll dif = (hi - lo + n - 2) / (n - 1);
	for (ll i = 0; i < hi; i += dif)
	{
		pll cur = bound(i, min(hi, i + dif - 1));
		if (cur.fi != -1)
		{
			nums.PB(cur.fi);
			nums.PB(cur.se);
		}
	}
	for (int i = 1; i < nums.size(); i++)
	{
		ckmax(res, nums[i] - nums[i - 1]);
	}
	return res;
}

Compilation message

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:155:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 1; i < vals.size(); i++)
                   ~~^~~~~~~~~~~~~
gap.cpp:176:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 1; i < nums.size(); i++)
                  ~~^~~~~~~~~~~~~
gap.cpp: At global scope:
gap.cpp:97:12: warning: 'int randomize(int)' defined but not used [-Wunused-function]
 static int randomize(int mod)
            ^~~~~~~~~
gap.cpp:93:18: warning: 'long long int randomizell(long long int)' defined but not used [-Wunused-function]
 static long long randomizell(long long mod)
                  ^~~~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 560 KB Output is correct
4 Correct 2 ms 560 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 3 ms 584 KB Output is correct
7 Correct 2 ms 616 KB Output is correct
8 Correct 2 ms 616 KB Output is correct
9 Correct 3 ms 620 KB Output is correct
10 Correct 3 ms 732 KB Output is correct
11 Correct 4 ms 732 KB Output is correct
12 Correct 3 ms 732 KB Output is correct
13 Correct 3 ms 732 KB Output is correct
14 Correct 3 ms 732 KB Output is correct
15 Correct 3 ms 732 KB Output is correct
16 Correct 18 ms 1148 KB Output is correct
17 Correct 22 ms 1148 KB Output is correct
18 Correct 17 ms 1148 KB Output is correct
19 Correct 20 ms 1148 KB Output is correct
20 Correct 20 ms 1148 KB Output is correct
21 Correct 72 ms 2548 KB Output is correct
22 Correct 83 ms 2676 KB Output is correct
23 Correct 62 ms 2676 KB Output is correct
24 Correct 72 ms 2676 KB Output is correct
25 Correct 60 ms 2676 KB Output is correct
26 Correct 69 ms 2676 KB Output is correct
27 Correct 69 ms 2676 KB Output is correct
28 Correct 63 ms 2676 KB Output is correct
29 Correct 63 ms 2676 KB Output is correct
30 Correct 59 ms 2676 KB Output is correct
31 Correct 3 ms 2676 KB Output is correct
32 Correct 0 ms 2676 KB Output is correct

Subtask #2
53.5083487467 / 70.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 2676 KB Partially correct
2 Partially correct 2 ms 2676 KB Partially correct
3 Partially correct 2 ms 2676 KB Partially correct
4 Partially correct 2 ms 2676 KB Partially correct
5 Partially correct 3 ms 2676 KB Partially correct
6 Partially correct 2 ms 2676 KB Partially correct
7 Partially correct 3 ms 2676 KB Partially correct
8 Partially correct 3 ms 2676 KB Partially correct
9 Partially correct 4 ms 2676 KB Partially correct
10 Correct 2 ms 2676 KB Output is correct
11 Partially correct 3 ms 2676 KB Partially correct
12 Partially correct 3 ms 2676 KB Partially correct
13 Partially correct 4 ms 2676 KB Partially correct
14 Partially correct 4 ms 2676 KB Partially correct
15 Partially correct 3 ms 2676 KB Partially correct
16 Partially correct 24 ms 2676 KB Partially correct
17 Partially correct 29 ms 2676 KB Partially correct
18 Partially correct 29 ms 2676 KB Partially correct
19 Partially correct 27 ms 2676 KB Partially correct
20 Correct 11 ms 2676 KB Output is correct
21 Partially correct 79 ms 2676 KB Partially correct
22 Partially correct 78 ms 2676 KB Partially correct
23 Partially correct 79 ms 2676 KB Partially correct
24 Partially correct 98 ms 2676 KB Partially correct
25 Partially correct 80 ms 3504 KB Partially correct
26 Partially correct 85 ms 3504 KB Partially correct
27 Partially correct 103 ms 3504 KB Partially correct
28 Partially correct 84 ms 3504 KB Partially correct
29 Partially correct 86 ms 3504 KB Partially correct
30 Correct 44 ms 3504 KB Output is correct
31 Partially correct 3 ms 3504 KB Partially correct
32 Partially correct 3 ms 3504 KB Partially correct