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Submission #391090

# Submission time Handle Problem Language Result Execution time Memory
391090 2021-04-17T20:12:17 Z arwaeystoamneg Rice Hub (IOI11_ricehub) C++17
100 / 100
 18 ms 2056 KB 
// EXPLOSION!
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
#include<chrono>

using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pair<int, int>> vpi;
typedef vector<pair<ll, ll>> vpll;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define mp make_pair
#define rsz resize
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define f first
#define s second
#define cont continue
#define endl '\n'
//#define ednl '\n'
#define test int testc;cin>>testc;while(testc--)
#define pr(a, b) trav(x,a)cerr << x << b; cerr << endl;
#define message cout << "Hello World" << endl;
const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 }; // for every grid problem!!
const ll linf = 4000000000000000000LL;
const ll inf = 1000000007;//998244353    

void pv(vi a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vll a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vector<vi>a) {
	F0R(i, sz(a)) { cout << i << endl; pv(a[i]); cout << endl; }
}void pv(vector<vll>a) { F0R(i, sz(a)) { cout << i << endl; pv(a[i]); }cout << endl; }void pv(vector<string>a) { trav(x, a)cout << x << endl; cout << endl; }
void setIO(string s) {
	ios_base::sync_with_stdio(0); cin.tie(0);
	if (sz(s))
	{
		freopen((s + ".in").c_str(), "r", stdin);
		if (s != "test1")
			freopen((s + ".out").c_str(), "w", stdout);
	}
}
#include "ricehub.h"
const int MAX = 100005;
int n, a[MAX], m;
ll b;
ll solve(int c)
{
	ll cur = 0, ans = linf;
	F0R(i, c)cur += abs(a[i] - a[c / 2]);
	ans = cur;
	F0R(i, n - c)
	{
		cur -= abs(a[i] - a[i + c / 2]);
		cur += abs(a[i + c] - a[i + c / 2]);
		if (c & 1)cur -= abs(a[i + c / 2 + 1] - a[i + c / 2]);
		ans = min(ans, cur);
	}
	return ans;
}
int besthub(int R, int L, int X[], long long B)
{
	n = R;
	m = L;
	F0R(i, n)a[i] = X[i];
	b = B;
	int l = 1, r = n;
	while (l < r)
	{
		int mid = (l + r + 1) / 2;
		if (solve(mid) <= B)
			l = mid;
		else
			r = mid - 1;
	}
	return l;
}
#ifdef arwaeystoamneg
#define MAX_R  1000000

static int R, L;
static long long B;
static int X[MAX_R];
static int solution;

inline
void my_assert(int e) { if (!e) abort(); }

static void read_input()
{
	int i;
	my_assert(3 == scanf("%d %d %lld", &R, &L, &B));
	for (i = 0; i < R; i++)
		my_assert(1 == scanf("%d", &X[i]));
	my_assert(1 == scanf("%d", &solution));
}

int main()
{
	setIO("test1");
	int ans;
	read_input();
	ans = besthub(R, L, X, B);
	if (ans == solution)
		printf("Correct.\n");
	else
		printf("Incorrect.  Returned %d instead of %d.\n", ans, solution);

	return 0;
}
#endif

Compilation message

ricehub.cpp: In function 'void setIO(std::string)':
ricehub.cpp:48:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   48 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ricehub.cpp:50:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   50 |    freopen((s + ".out").c_str(), "w", stdout);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 296 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 308 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 304 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 280 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 1 ms 316 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 2 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 460 KB Output is correct
2 Correct 4 ms 460 KB Output is correct
3 Correct 16 ms 1028 KB Output is correct
4 Correct 17 ms 972 KB Output is correct
5 Correct 9 ms 692 KB Output is correct
6 Correct 9 ms 672 KB Output is correct
7 Correct 18 ms 1028 KB Output is correct
8 Correct 15 ms 972 KB Output is correct
9 Correct 10 ms 588 KB Output is correct
10 Correct 8 ms 588 KB Output is correct
11 Correct 17 ms 1016 KB Output is correct
12 Correct 16 ms 1056 KB Output is correct
13 Correct 9 ms 588 KB Output is correct
14 Correct 9 ms 588 KB Output is correct
15 Correct 13 ms 1612 KB Output is correct
16 Correct 13 ms 1612 KB Output is correct
17 Correct 15 ms 1944 KB Output is correct
18 Correct 16 ms 1840 KB Output is correct
19 Correct 16 ms 1996 KB Output is correct
20 Correct 16 ms 2056 KB Output is correct