oj.uz

Submission #831189

# Submission time Handle Problem Language Result Execution time Memory
831189 2023-08-19T21:47:24 Z TB_ Hacker (BOI15_hac) C++17
100 / 100
 237 ms 26216 KB 
#include <bits/stdc++.h>
using namespace std;

// #undef _GLIBCXX_DEBUG                // disable run-time bound checking, etc
// #pragma GCC optimize("Ofast,inline") // Ofast = O3,fast-math,allow-store-data-races,no-protect-parens
// #pragma GCC optimize ("unroll-loops")

// #pragma GCC target("bmi,bmi2,lzcnt,popcnt")                      // bit manipulation
// #pragma GCC target("movbe")                                      // byte swap
// #pragma GCC target("aes,pclmul,rdrnd")                           // encryption
// #pragma GCC target("avx,avx2,f16c,fma,sse3,ssse3,sse4.1,sse4.2") // SIMD

// #include <bits/extc++.h>
// using namespace __gnu_pbds;
// template<class T>using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
// template<class T>using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define ll long long
#define INF (ll)1e9+7
#define fo(i, n) for(ll i=0;i<((ll)n);i++)
#define deb(x) cout << #x << " = " << x << endl;
#define deb2(x, y) cout << #x << " = " << x << ", " << #y << " = " << y << endl
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define LSOne(S) ((S) & (-S))
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
inline int readint(){ int v = 0; char c; while((c = getchar()) != EOF && c != ' ' && c != '\n'){ v *= 10; v += c - '0'; } return v; }
inline int readintsigned() { int v = 0; int sign = 1; char c = getchar(); if (c == '-') { sign = -1; } else { v += c - '0'; } while ((c = getchar()) != EOF && c != ' ' && c != '\n') { v *= 10; v += c - '0'; } return v * sign; }
inline string readstring() { string s; char c; while ((c = getchar()) != EOF && c != '\n' && c != ' ') { s.push_back(c); } return s; }
template <class result_t=std::chrono::milliseconds,class clock_t=std::chrono::steady_clock,class duration_t = std::chrono::milliseconds>
auto since(std::chrono::time_point<clock_t, duration_t> const& start){return std::chrono::duration_cast<result_t>(clock_t::now() - start);}
typedef pair<int, int> pii;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpii;
typedef vector<pl> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef vector<vpii> vvpii;
typedef vector<vpl> vvpl;



int main() {
    // cout << fixed << setprecision(20);
    // auto start = std::chrono::steady_clock::now(); // since(start).count()
    cin.tie(0)->sync_with_stdio(0);

    ll n, val;
    cin >> n;
    vl v(n);
    fo(i, n) cin>>v[i];
    fo(j, 2)
        fo(i, n) v.pb(v[i]);
    for(int i = 1; i < n*3; i++) v[i] += v[i-1];

    ll ans = 0, half = n/2+(n%2);
    pl current = {1e10, 2e10}, amount = {0, 0};

    multiset<ll> s;
    fo(i, half){
        val = v[i+n]-v[i+n-half];
        s.insert(val);
        ans=*s.begin();
    }
    for(int i = n+1; i < n*2; i++){
        s.erase(s.find(v[i-1]-v[i-1-half]));
        s.insert(v[i+half-1]-v[i-1]);
        ans=max(ans, *s.begin());  
    }
    cout << ans;


    return 0;
}

Compilation message

hac.cpp: In function 'int main()':
hac.cpp:62:8: warning: variable 'current' set but not used [-Wunused-but-set-variable]
   62 |     pl current = {1e10, 2e10}, amount = {0, 0};
      |        ^~~~~~~
hac.cpp:62:32: warning: variable 'amount' set but not used [-Wunused-but-set-variable]
   62 |     pl current = {1e10, 2e10}, amount = {0, 0};
      |                                ^~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 320 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 0 ms 320 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 320 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 0 ms 320 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 324 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 2 ms 476 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 584 KB Output is correct
27 Correct 0 ms 324 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 2 ms 468 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 25 ms 4348 KB Output is correct
5 Correct 76 ms 10368 KB Output is correct
6 Correct 99 ms 13048 KB Output is correct
7 Correct 112 ms 15724 KB Output is correct
8 Correct 232 ms 25964 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 320 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 0 ms 320 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 324 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 2 ms 476 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 584 KB Output is correct
27 Correct 0 ms 324 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 512 KB Output is correct
35 Correct 25 ms 4348 KB Output is correct
36 Correct 76 ms 10368 KB Output is correct
37 Correct 99 ms 13048 KB Output is correct
38 Correct 112 ms 15724 KB Output is correct
39 Correct 232 ms 25964 KB Output is correct
40 Correct 3 ms 820 KB Output is correct
41 Correct 6 ms 1272 KB Output is correct
42 Correct 9 ms 1808 KB Output is correct
43 Correct 83 ms 10512 KB Output is correct
44 Correct 206 ms 25856 KB Output is correct
45 Correct 33 ms 5276 KB Output is correct
46 Correct 110 ms 15636 KB Output is correct
47 Correct 237 ms 25964 KB Output is correct
48 Correct 177 ms 26216 KB Output is correct
49 Correct 165 ms 25304 KB Output is correct
50 Correct 178 ms 25320 KB Output is correct