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Submission #17004

# Submission time Handle Problem Language Result Execution time Memory
17004 2015-11-03T18:00:22 Z erdemkiraz Rice Hub (IOI11_ricehub) C++
17 / 100
 23 ms 6800 KB 
#include <bits/stdc++.h>
#include "ricehub.h"

using namespace std;

#define type(x) __typeof((x).begin())
#define foreach(it, x) for(type(x) it = (x).begin(); it != (x).end(); it++)

typedef long long ll;
typedef pair < int, int > ii;

const int inf = 1e9 + 333;
const ll linf = 1e18 + inf;

const int N = 1e5 + 5;

int n;
int a[N];
ll m;
ll L[N];

int ptr, ans = 1;

ll getL(int i, int j) {
    return (ll) (j - i + 1) * a[j] - (L[j] - L[i - 1]);
}

ll getR(int i, int j) {
    return L[j] - L[i - 1] - (ll) (j - i + 1) * a[i];
}

bool check(int i, int j) {
    ll need = getL(i, j);
    if(need > m)
        return 0;
    ans = max(ans, j - i + 1);
    ptr = max(ptr, j);
    if(getL(i, j) + getR(j, ptr) <= m)
        ans = max(ans, ptr - i + 1);
    while(ptr + 1 <= n and a[ptr + 1] - a[j] <= a[j] - a[i]) {
        ptr++;
        if(getL(i, j) + getR(j, ptr) <= m)
            ans = max(ans, ptr - i + 1);
        else {
            ptr--;
            return 0;
        }
    }
    return 1;
}

void solve() {
    for(int i = 1; i <= n; i++)
        L[i] = L[i - 1] + a[i];
    :: ptr = 1;
    int ptr = 1;
    for(int i = 1; i <= n; i++) {
        ptr = max(ptr, i);
        while(ptr + 1 <= n and check(i, ptr + 1))
            ptr++;
    }
}

int besthub(int R, int L, int X[], long long B) {
    n = R;
    m = B;
    for(int i = 0; i < n; i++) {
        a[i + 1] = X[i];
    }
    for(int i = 1; i <= n; i++) {
        a[i] = L - X[n - i] + 1;
    }
    solve();
    return ans;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 6800 KB Output is correct
2 Correct 0 ms 6800 KB Output is correct
3 Correct 0 ms 6800 KB Output is correct
4 Correct 0 ms 6800 KB Output is correct
5 Correct 0 ms 6800 KB Output is correct

Subtask #2
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 6800 KB Output is correct
2 Correct 0 ms 6800 KB Output is correct
3 Correct 0 ms 6800 KB Output is correct
4 Correct 0 ms 6800 KB Output is correct
5 Correct 0 ms 6800 KB Output is correct
6 Correct 0 ms 6800 KB Output is correct
7 Correct 0 ms 6800 KB Output is correct
8 Correct 0 ms 6800 KB Output is correct
9 Correct 0 ms 6800 KB Output is correct
10 Correct 0 ms 6800 KB Output is correct
11 Correct 0 ms 6800 KB Output is correct
12 Correct 0 ms 6800 KB Output is correct
13 Correct 0 ms 6800 KB Output is correct
14 Correct 0 ms 6800 KB Output is correct
15 Correct 0 ms 6800 KB Output is correct
16 Correct 0 ms 6800 KB Output is correct
17 Correct 0 ms 6800 KB Output is correct
18 Correct 0 ms 6800 KB Output is correct
19 Correct 0 ms 6800 KB Output is correct
20 Correct 0 ms 6800 KB Output is correct
21 Correct 0 ms 6800 KB Output is correct
22 Correct 0 ms 6800 KB Output is correct
23 Correct 0 ms 6800 KB Output is correct
24 Correct 0 ms 6800 KB Output is correct
25 Correct 0 ms 6800 KB Output is correct
26 Correct 0 ms 6800 KB Output is correct
27 Incorrect 0 ms 6800 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #3
0.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 6800 KB Output is correct
2 Correct 0 ms 6800 KB Output is correct
3 Correct 0 ms 6800 KB Output is correct
4 Correct 0 ms 6800 KB Output is correct
5 Correct 0 ms 6800 KB Output is correct
6 Correct 0 ms 6800 KB Output is correct
7 Correct 0 ms 6800 KB Output is correct
8 Correct 0 ms 6800 KB Output is correct
9 Correct 0 ms 6800 KB Output is correct
10 Correct 0 ms 6800 KB Output is correct
11 Correct 0 ms 6800 KB Output is correct
12 Correct 0 ms 6800 KB Output is correct
13 Correct 0 ms 6800 KB Output is correct
14 Correct 0 ms 6800 KB Output is correct
15 Correct 0 ms 6800 KB Output is correct
16 Correct 0 ms 6800 KB Output is correct
17 Correct 0 ms 6800 KB Output is correct
18 Incorrect 0 ms 6800 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #4
0.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 6800 KB Output is correct
2 Correct 5 ms 6800 KB Output is correct
3 Correct 23 ms 6800 KB Output is correct
4 Correct 17 ms 6800 KB Output is correct
5 Correct 8 ms 6800 KB Output is correct
6 Correct 11 ms 6800 KB Output is correct
7 Correct 22 ms 6800 KB Output is correct
8 Correct 19 ms 6800 KB Output is correct
9 Correct 0 ms 6800 KB Output is correct
10 Correct 7 ms 6800 KB Output is correct
11 Correct 19 ms 6800 KB Output is correct
12 Correct 23 ms 6800 KB Output is correct
13 Correct 11 ms 6800 KB Output is correct
14 Correct 12 ms 6800 KB Output is correct
15 Correct 16 ms 6800 KB Output is correct
16 Incorrect 11 ms 6800 KB Output isn't correct
17 Halted 0 ms 0 KB -