Submission #1015224

# Submission time Handle Problem Language Result Execution time Memory
1015224 2024-07-06T07:40:45 Z vjudge1 Gap (APIO16_gap) C++17
83.8866 / 100
52 ms 7004 KB
#include <bits/stdc++.h>
// #include "grader.cpp"
#include "gap.h"

using namespace std;

typedef long long ll;
ll n;
set<ll> st;
void recur(ll l, ll r){
    if (r < l or st.size() == n) return ;
    if (r - l <= 1){
        MinMax(l, r, &l, &r);
        if (l != -1){
            st.insert(l);
            st.insert(r);
        }
        return ;
    }

    ll mid = (l + r) / 2;
    
    ll mn, mx;
    MinMax(l, mid, &mn, &mx);

    if (mn != -1){
        st.insert(mn);
        st.insert(mx);
        recur(mn + 1, mx - 1);
    }

    MinMax(mid + 1, r, &mn, &mx);
    if (mn != -1){
        st.insert(mn);
        st.insert(mx);
        recur(mn + 1, mx - 1);
    }
}

ll findGap(int T, int N){
    n = N;
    ll res;
    if (T == 1 or N <= 8){
        ll mn = 0, mx = 1e18;
        while (N > 0){
            N -= 2;

            MinMax(mn, mx, &mn, &mx);

            st.insert(mn);
            st.insert(mx);
            
            mn++;
            mx--;
        }

        vector<ll> vec;
        for (ll x : st)
            vec.push_back(x);

        ll res = 0;
        for (ll i = 1; i < vec.size(); i ++)
            res = max(res, vec[i] - vec[i - 1]);
        return res;
    }
    else if (N <= 40){
        recur(0, 1e18);
        vector<ll> vec;
        for (ll x : st)
            vec.push_back(x);

        ll res = 0;
        for (ll i = 1; i < vec.size(); i ++)
            res = max(res, vec[i] - vec[i - 1]);
        return res;
    }
    else{
        ll l = 0, r = 1e18;
        ll mn, mx;
        MinMax(l, r, &mn, &mx);

        ll first = mn, last = mx;

        ll ans = 1;
        ll actual = 1;
        l = mn + 1;

        while (l <= last){
            r = l + ans;
            MinMax(l, r, &mn, &mx);

            if (mn == -1)
                ans *= 2;
            else{
                actual = max(actual, mn - (l - 1));
                ans = actual;
                l = mx + 1;
            }
        }

        return actual;
    }
}

Compilation message

gap.cpp: In function 'void recur(ll, ll)':
gap.cpp:11:28: warning: comparison of integer expressions of different signedness: 'std::set<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   11 |     if (r < l or st.size() == n) return ;
      |                  ~~~~~~~~~~^~~~
gap.cpp: In function 'll findGap(int, int)':
gap.cpp:62:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |         for (ll i = 1; i < vec.size(); i ++)
      |                        ~~^~~~~~~~~~~~
gap.cpp:73:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for (ll i = 1; i < vec.size(); i ++)
      |                        ~~^~~~~~~~~~~~
gap.cpp:82:12: warning: unused variable 'first' [-Wunused-variable]
   82 |         ll first = mn, last = mx;
      |            ^~~~~
gap.cpp:42:8: warning: unused variable 'res' [-Wunused-variable]
   42 |     ll res;
      |        ^~~
# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 12 ms 2100 KB Output is correct
17 Correct 10 ms 2136 KB Output is correct
18 Correct 11 ms 2136 KB Output is correct
19 Correct 10 ms 2136 KB Output is correct
20 Correct 8 ms 2136 KB Output is correct
21 Correct 45 ms 6860 KB Output is correct
22 Correct 40 ms 7000 KB Output is correct
23 Correct 41 ms 6868 KB Output is correct
24 Correct 40 ms 6860 KB Output is correct
25 Correct 35 ms 6860 KB Output is correct
26 Correct 40 ms 6860 KB Output is correct
27 Correct 41 ms 7004 KB Output is correct
28 Correct 41 ms 6860 KB Output is correct
29 Correct 52 ms 6916 KB Output is correct
30 Correct 37 ms 6980 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Partially correct 0 ms 344 KB Partially correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Partially correct 1 ms 344 KB Partially correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 4 ms 440 KB Output is correct
18 Correct 4 ms 600 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 4 ms 600 KB Output is correct
21 Correct 18 ms 1104 KB Output is correct
22 Correct 17 ms 1112 KB Output is correct
23 Correct 21 ms 1112 KB Output is correct
24 Correct 17 ms 1112 KB Output is correct
25 Partially correct 40 ms 1112 KB Partially correct
26 Correct 23 ms 1160 KB Output is correct
27 Correct 17 ms 1112 KB Output is correct
28 Correct 17 ms 1112 KB Output is correct
29 Correct 16 ms 1112 KB Output is correct
30 Correct 18 ms 1112 KB Output is correct
31 Partially correct 0 ms 344 KB Partially correct
32 Correct 0 ms 344 KB Output is correct