Submission #1196310

#	Time	Username	Problem	Language	Result	Execution time	Memory
1196310		baojiaopisu	Room Temperature (JOI24_ho_t1)	C++20	0 / 100	2 ms	324 KiB

Main

#include<bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;

using pii = pair<int, int>;
using pll = pair<long long, long long>;

#define pb push_back
#define ins insert
#define fi first
#define se second
#define btpc __builtin_popcount
#define btclz __builtin_clz

#define sz(x) (int)(x.size());
#define all(x) x.begin(), x.end()
#define debug(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int d4x[4] = {1, 0, -1, 0}; int d4y[4] = {0, 1, 0, -1};
int d8x[8] = {0, 1, 1, 1, 0, -1, -1, -1};
int d8y[8] = {1, 1, 0, -1, -1, -1, 0, 1};

template<class X, class Y>
    bool minimize(X &x, const Y &y) {
        if (x > y)
        {
            x = y;
            return true;
        }
        return false;
    }
template<class X, class Y>
    bool maximize(X &x, const Y &y) {
        if (x < y)
        {
            x = y;
            return true;
        }
        return false;
    }

const int MOD = 1e9 + 7; //998244353

/* Author : Le Ngoc Bao Anh, A5K37 Le Quy Don High School for Gifted Student, Da Nang */

/*       University of Wollongong       */

const long long INF = 1e9;
const int N = 1e6 + 10;

ll pref[N], a[N];

void BaoJiaoPisu() {
	int n; cin >> n;
	ll T; cin >> T;
	for(int i = 1; i <= n; i++) {
		cin >> a[i];
		a[i] %= T;
	}
	sort(a + 1, a + 1 + n);

	ll ans = 1e18;
	for(int i = 1; i <= n; i++) a[i + n] = a[i] + T;
	for(int i = 1; i <= 2 * n; i++) pref[i] = pref[i - 1] + a[i];
	for(int i = 0; i <= n; i++) {
		ll res = 0;
		int l = i + 1;
		int r = n + i;
		int m = (l + r) >> 1;
		res += a[m] * (m - l + 1) - (pref[m] - pref[l - 1]);
		res += (pref[r] - pref[m]) - a[m] * (r - m);
		minimize(ans, res);
	}

	cout << ans;
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #else 
    //online
    #endif

    int tc = 1, ddd = 0;
    // cin >> tc;
    while(tc--) {
        //ddd++;
        //cout << "Case #" << ddd << ": ";
        BaoJiaoPisu();
    }
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:87:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:88:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 5
• Subtask 3: 0 / 30
• Subtask 4: 0 / 35
• Subtask 5: 0 / 15