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Submission #530807

# Submission time Handle Problem Language Result Execution time Memory
530807 2022-02-26T20:49:06 Z SlavicG Rice Hub (IOI11_ricehub) C++17
68 / 100
 14 ms 3004 KB 
#include "bits/stdc++.h"
#include "ricehub.h"
using namespace std;
 
#define ll long long
 
#define       forn(i,n)              for(int i=0;i<n;i++)
#define          all(v)              v.begin(), v.end()
#define         rall(v)              v.rbegin(),v.rend()
 
#define            pb                push_back
#define          sz(a)               (int)a.size()


int query(int l, int r, vector<ll>& p) {
    return p[r] - (l ? p[l - 1] : 0);
}

bool ok(int val, vector<int>& x, ll b) {
    int n = sz(x);
    vector<ll> p(n);
    for(int i = 0;i < n; ++i) {
        p[i] = (i ? p[i - 1] : 0) + x[i];
    }

    for(int i = 0; i + val - 1 < n; ++i) {
        ll med = (i + val / 2);
        ll calc = x[med] * (i + val / 2 - i + 1) - query(i, i + val / 2, p);
        calc += query(i + val / 2, i + val - 1, p) - x[med] * (i + val - 1 - i - val / 2 + 1);
        if(calc <= b) return true;
    }
    return false;
}

int besthub(int R, int L, int f[], ll b) {
    int l = 1, r = R, ans = 0;
    vector<int> x;
    for(int i = 0;i < R; ++i) x.pb(f[i]);
    while(l <= r) {
        int mid = l + r >> 1;
        if(ok(mid, x, b)) {
            ans = mid;
            l = mid + 1;
        } else r = mid - 1;
    }

    return ans;
}

/*
void solve() {
    int r, l; ll b;
    cin >> r >> l >> b;
    vector<int> x(r);
    forn(i, r) cin >> x[i];

    cout << besthub(r, l, x, b) << "\n";
} 
 
int32_t main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t = 1;
    //cin >> t;
    while(t--) {
        solve();
    }
}
*/

Compilation message

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:40:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |         int mid = l + r >> 1;
      |                   ~~^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 304 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 300 KB Output is correct
5 Correct 0 ms 204 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 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 300 KB Output is correct
5 Correct 0 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 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 304 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 0 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 308 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 0 ms 304 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 300 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 0 ms 332 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 1 ms 304 KB Output is correct
21 Correct 3 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 2 ms 440 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 460 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 864 KB Output is correct
2 Correct 3 ms 844 KB Output is correct
3 Correct 14 ms 3000 KB Output is correct
4 Incorrect 14 ms 3004 KB Output isn't correct
5 Halted 0 ms 0 KB -