oj.uz

Submission #198963

# Submission time Handle Problem Language Result Execution time Memory
198963 2020-01-28T12:15:40 Z godwind Rice Hub (IOI11_ricehub) C++14
100 / 100
 28 ms 2936 KB 
// O O O O O O O O O O O O O O O OO O OO O OO O O O TTCH O TTTCH O TTTCH O O O O
#pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
#pragma GCC target("sse,sse2,sse3,ssse3,popcnt,abm,mmx")
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <stdio.h>
#include <cstdio>
#include <math.h>
#include <cmath>
#include <string>
#include <cstring>
#include <queue>
#include <deque>
#include <random>
#include <iomanip>
#include <bitset>
#include <cassert>
// #include "grader.h"

using namespace std;


#define ll long long
#define ld double
#define null NULL
#define prev prev228
#define index index228
#define left left228
#define right right228
#define hash hash228
#define y1 y1228
#define firn(i, n) for (int i = 0; i < (int)n; ++i)
#define forn(i, n) for (int i = 1; i <= (int)n; ++i)
#define endl '\n'


template<typename T> void uin(T &a, T b) {
    if (b < a) a = b;
}

template<typename T> void uax(T &a, T b) {
    if (b > a) a = b;
}

const int N = 100 * 1000 + 228;

long long sum[N];
int x[N];

long long f(int l, int r, int i) {
	long long res = 0LL; 
	res += (sum[r] - sum[i]) - (long long)x[i - 1] * (long long)(r - i);
	res += (long long)x[i - 1] * (long long)(i - l) - (sum[i - 1] - sum[l - 1]);
	return res;
}

int besthub(int n, int L, int X[], long long B){  
	for (int i = 0; i < n; ++i) {
		x[i] = X[i];
	}
	for (int i = 1; i <= n; ++i) {
		sum[i] = sum[i - 1] + x[i - 1];
	}
	int k = 1;
	for (int i = 1; i <= n; ++i) {
		int l = i - k / 2, r = i + k / 2;
		if (l < 1 || r > n) continue;
		while (l > 1 && r < n && f(l - 1, r + 1, i) <= B) {
			--l;
			++r;
		}
		if (f(l, r, i) <= B) {
			uax(k, r - l + 1);
		}
		if (r < n && f(l, r + 1, i) <= B) uax(k, r - l + 2);
		if (l > 1 && f(l - 1, r, i) <= B) uax(k, r - l + 2);
	}
	return k;
}

// int X[N];

// signed main() {
// 	X[0] = 1, X[1] = 2, X[2] = 10, X[3] = 12, X[4] = 14;
// 	cout << besthub(5, 20, X, 6LL) << '\n';
// }

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 6 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 380 KB Output is correct
21 Correct 5 ms 376 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 376 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 376 KB Output is correct
26 Correct 5 ms 376 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 5 ms 376 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 408 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 6 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 6 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 380 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 7 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 6 ms 376 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 6 ms 380 KB Output is correct
25 Correct 6 ms 376 KB Output is correct
26 Correct 6 ms 376 KB Output is correct
27 Correct 6 ms 376 KB Output is correct
28 Correct 6 ms 376 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 572 KB Output is correct
2 Correct 8 ms 632 KB Output is correct
3 Correct 23 ms 1912 KB Output is correct
4 Correct 24 ms 2936 KB Output is correct
5 Correct 13 ms 1528 KB Output is correct
6 Correct 14 ms 1272 KB Output is correct
7 Correct 23 ms 2680 KB Output is correct
8 Correct 21 ms 2680 KB Output is correct
9 Correct 13 ms 1400 KB Output is correct
10 Correct 13 ms 1400 KB Output is correct
11 Correct 28 ms 2936 KB Output is correct
12 Correct 26 ms 2936 KB Output is correct
13 Correct 15 ms 1528 KB Output is correct
14 Correct 14 ms 1528 KB Output is correct
15 Correct 20 ms 2296 KB Output is correct
16 Correct 20 ms 2296 KB Output is correct
17 Correct 23 ms 2680 KB Output is correct
18 Correct 24 ms 2680 KB Output is correct
19 Correct 25 ms 2808 KB Output is correct
20 Correct 28 ms 2808 KB Output is correct