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Submission #398603

# Submission time Handle Problem Language Result Execution time Memory
398603 2021-05-04T15:23:32 Z AugustinasJucas Rice Hub (IOI11_ricehub) C++14
17 / 100
 1000 ms 125008 KB 
#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
int n, l;
const int dydis = 1e5 + 10;
long long pref[dydis];
long long sm(int l, int r){
    return pref[r] - (l == 0 ? 0ll : pref[l-1]);
}
map<int, int> kek;
pair<long long, long long> f(int dst, int ind, int mas[], long long B){
    int l = 0; int r = ind-1; int mid;
    int L = ind; int R = ind;
    while(l <= r){
        mid = (l + r) / 2;
        if(abs(mas[mid]-mas[ind]) < dst){
            L = min(L, mid);
            r = mid-1;
        }else{
            l = mid+1;
        }
    }
    l = ind+1; r = n-1;
    while(l <= r){
        mid = (l + r) / 2;
        if(abs(mas[mid] - mas[ind]) < dst){
            R = max(R, mid);
            l = mid+1;
        }else{
            r = mid-1;
        }
    }

    long long SL = 1ll * (ind - L + 1) * mas[ind] - sm(L, ind);
    long long SR = sm(ind, R) - 1ll * (R - ind + 1) * mas[ind];

    long long lieka = B - SL - SR;
    int pl = 0;
    if(lieka > 0){
        int galiu = lieka / dst;
        galiu = min(galiu, kek[mas[ind] + dst] + kek[mas[ind] - dst]);
        pl = galiu;
    }

  // cout << "SR = " << sm(ind, R) << " - " << 1ll * (R - ind + 1) * mas[ind] << ", MAS[" << ind << "] = " << mas[ind] << "    ";
  //  cout << "dst = " << dst << ", o i = " << ind << ", tai L = " << L << ", R = " <<  R << ", tai ret = " << SL << " + " << SR << endl;
    return make_pair(pl + SL + SR, R - L + 1);
}
int besthub(int N, int L, int X[], long long B) {
    n = N; l = L;
    for(int i = 0; i < n; i++) kek[X[i]]++;
    for(int i = 0; i < n; i++) pref[i] = 1ll * X[i] + (i == 0 ? 0ll : pref[i-1]);
    long long ans = 0;
    for(int i = 0; i < n; i++){
        long long st = 1;
        int l = 0, r = 1e9, mid;
        while(l <= r){
            mid = (l + r) / 2;
            auto ff = f(mid, i, X, B);
            if(ff.first <= B){
                st = max(st, ff.second);
                l = mid+1;
            }else{
                r = mid-1;
            }
        }
       // cout << "i = " << i << ", st = " << st << endl;
        ans = max(ans, st);
    }
    return ans;
}

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 300 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 352 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Incorrect 1 ms 204 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 14 ms 2924 KB Output is correct
4 Correct 6 ms 1100 KB Output is correct
5 Incorrect 2 ms 204 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 3440 KB Output is correct
2 Correct 73 ms 3396 KB Output is correct
3 Execution timed out 1086 ms 125008 KB Time limit exceeded
4 Halted 0 ms 0 KB -