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Submission #436895

# Submission time Handle Problem Language Result Execution time Memory
436895 2021-06-25T07:57:03 Z kevinxiehk Rice Hub (IOI11_ricehub) C++17
100 / 100
 20 ms 3276 KB 
#include "ricehub.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;

ll psum[100005];
ll sm[100005];
ll b;
int r;
ll range(int r, int l) {
    return psum[r] - psum[l - 1];
}
bool one(int k) {
    if(k == 1) return true;
    for(int i = 1; i + k - 1 <= r; i++) {
        int m = i + k / 2;
        ll lef = m - i;
        ll rig = k - lef;
        ll sum = (sm[m] * lef - range(m - 1, i)) + (range(i + k - 1, m) - sm[m] * rig);
        if(sum <= b) return true;
    }
    return false;
}
int besthub(int R, int L, int x[], ll B) {
    b = B; r = R;
    for(int i = 1; i <= r; i++) {
        psum[i] = psum[i - 1] + x[i - 1];
        sm[i] = x[i - 1];
        //cerr << psum[i] << '\n';
    }
    int l = 1, rr = r;
    while(l < rr) {
        int m = (l + rr + 1) / 2;
        if(one(m)) l = m;
        else rr = m - 1; 
    }
    return l;
}

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 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 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 300 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 300 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 332 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 300 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 204 KB Output is correct
22 Correct 1 ms 204 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 332 KB Output is correct
4 Correct 1 ms 332 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 332 KB Output is correct
8 Correct 1 ms 332 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 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 304 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 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 2 ms 436 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 716 KB Output is correct
2 Correct 4 ms 716 KB Output is correct
3 Correct 16 ms 3272 KB Output is correct
4 Correct 18 ms 3188 KB Output is correct
5 Correct 8 ms 1612 KB Output is correct
6 Correct 8 ms 1572 KB Output is correct
7 Correct 13 ms 3020 KB Output is correct
8 Correct 13 ms 2920 KB Output is correct
9 Correct 7 ms 1484 KB Output is correct
10 Correct 7 ms 1484 KB Output is correct
11 Correct 16 ms 3268 KB Output is correct
12 Correct 15 ms 3276 KB Output is correct
13 Correct 8 ms 1612 KB Output is correct
14 Correct 8 ms 1612 KB Output is correct
15 Correct 11 ms 2508 KB Output is correct
16 Correct 13 ms 2516 KB Output is correct
17 Correct 13 ms 2892 KB Output is correct
18 Correct 14 ms 2928 KB Output is correct
19 Correct 20 ms 3048 KB Output is correct
20 Correct 16 ms 3148 KB Output is correct