Submission #1297690

#	Time	Username	Problem	Language	Result	Execution time	Memory
1297690		pecorine	Hacker (BOI15_hac)	C++20	0 / 100	2 ms	1088 KiB

hac

#include <bits/stdc++.h> // clang-format off
#define princess_connect(file,extention) if(fopen(file "." extention, "r")) freopen(file "." extention, "r", stdin)
#define yabai_desune ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define __Pecorine__ signed main()
#define For(i, l, r) for (int i = l; i <= r; i++)
#define Fod(i, r, l) for (int i = r; i >= l; i--)
#define ll long long
#define pb push_back
#define sz(yuuki) (int)yuuki.size()
#define bit(x, i) (x >> i) & 1
#define endl "\n"
using namespace std;/* //
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠀⠀⠙⠻⠟⠛⠻⢿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣦⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣯⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡆⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣿
⣿⣿⣿⡟⠿⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⡀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣀⠀⢸⣿
⣿⡄⠀⠀⠀⠀⠀⠻⠿⣿⣿⣿⣿⣿⡷⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣼⣿⣿⣿
⣿⣷⡀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠛⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿
⣿⣿⣿⣷⣶⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣿⣿⣿
⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⠋⣉⣽
⣿⣿⣿⣿⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⣿⣿
⣿⣿⣿⣿⡏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣿
*/ // clang-format on
const int inf = 2e9;
const int mxn = 2 * 1e5 + 7;
const int mod = 1e9 + 7;

int n;
vector<int> a(mxn);

__Pecorine__ {
    yabai_desune;
    princess_connect("yabai", "desune");
    cin >> n;
    For(i, 1, n) cin >> a[i];
    For(i, 1, n) {
        a[i + n] = a[i];
    }

    int res = 0;
    For(i, 1, n) {
        int total = 0, total1 = 0;
        For(j, i, i + n / 2 - 1) {
            total += a[j];
        }
        Fod(j, i + n, i - n / 2 + n + 1) {
            total1 += a[j];
        }
        res = max(res, min(total1, total));
    }
    cout << res;
}

Compilation message (stderr)

hac.cpp: In function 'int main()':
hac.cpp:2:84: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define princess_connect(file,extention) if(fopen(file "." extention, "r")) freopen(file "." extention, "r", stdin)
      |                                                                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hac.cpp:40:5: note: in expansion of macro 'princess_connect'
   40 |     princess_connect("yabai", "desune");
      |     ^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40