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Submission #553981

# Submission time Handle Problem Language Result Execution time Memory
553981 2022-04-27T13:00:27 Z shmad Orchard (NOI14_orchard) C++17
17 / 25
 163 ms 22176 KB 
#pragma GCC optimize("O3", "unroll-loops") // "Ofast"
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) (x >> i & 1)

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvt = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, inf = 1e18 + 7, B = 500, LIM = (1ll << 60);
const double eps = 1e-6;

int n, m, p[200][5005], v[5005];

int get (int l, int r) {
	int mn = 0, ans = inf;
	int len = r - l + 1;
	for (int i = 1; i <= m; i++) {
		mn = min(mn, v[i] * 2 - (i * len));
		ans = min(ans, (i * len) - v[i] * 2 + mn);
	}
	return ans;
}

void solve () {
	cin >> n >> m;
	bool a[n + 1][m + 1];
	int cnt = 0;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cin >> a[i][j];
			cnt += a[i][j];
			p[i][j] = p[i - 1][j] + p[i][j - 1] - p[i - 1][j - 1] + a[i][j];
		}
	}
	int ans = inf;
	for (int i = 1; i <= n; i++) {
		for (int j = i; j <= n; j++) {
			for (int k = 1; k <= m; k++) v[k] = p[j][k] - p[i - 1][k];
			ans = min(ans, get(i, j));
		}
	}
	cout << cnt + ans;
	cout << '\n';
}

bool testcases = 0;

signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
    cin.tie(0) -> sync_with_stdio(0);
    int test = 1;
    if (testcases) cin >> test;
    for (int cs = 1; cs <= test; cs++) {
        solve();
    }
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 548 KB Output is correct
3 Correct 2 ms 468 KB Output is correct

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 75 ms 22176 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 3.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1876 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 724 KB Output is correct
2 Correct 5 ms 1176 KB Output is correct
3 Correct 6 ms 1176 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 8372 KB Output is correct
2 Correct 163 ms 8432 KB Output is correct
3 Correct 151 ms 8364 KB Output is correct