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Submission #857701

# Submission time Handle Problem Language Result Execution time Memory
857701 2023-10-06T15:47:11 Z serifefedartar Strah (COCI18_strah) C++17
77 / 110
 1000 ms 21572 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define fast ios::sync_with_stdio(0);cin.tie(0);
#define s second
#define f first
typedef long long ll;
const ll MOD = 1e9 + 7;
const ll LOGN = 18; 
const ll INF = 1e15;
const ll MAXN = 2005;

vector<int> occ[MAXN];
int N, M;
int emp[MAXN][MAXN], sg[4*MAXN], lazy[4*MAXN];
ll total = 0, ans = 0;
void push(int k, int a, int b) {
	if (lazy[k] != -1) {
		sg[k] = lazy[k];
		if (a != b) {
			lazy[2*k] = lazy[k];
			lazy[2*k+1] = lazy[k];
		}
		lazy[k] = -1;
	}
}

void update(int k, int a, int b, int q_l, int q_r, int new_val) {
	push(k, a, b);
	if (q_r < a || q_l > b)
		return ;
	if (q_l <= a && b <= q_r) {
		lazy[k] = new_val;
		push(k, a, b);
		return ;
	}
	update(2*k, a, (a+b)/2, q_l, q_r, new_val);
	update(2*k+1, (a+b)/2+1, b, q_l, q_r, new_val);
	sg[k] = max(sg[2*k], sg[2*k+1]);
}

ll calc(ll x) {
	return (x * x * x + 3 * x * x + 2 * x) / 6;
}

int get(int k, int a, int b, int pos) {
	push(k, a, b);
	if (b < pos || a > pos)
		return 0;
	if (a == b)
		return sg[k];

	if ((a+b)/2 >= pos)
		return get(2*k, a, (a+b)/2, pos);
	return get(2*k+1, (a+b)/2+1, b, pos);
}

int query(int k, int a, int b, int val) {
	push(k, a, b);
	if (a == b) {
		if (sg[k] >= val)
			return a;
		return N+1;
	}
	push(2*k, a, (a+b)/2);
	if (sg[2*k] >= val)
		return query(2*k, a, (a+b)/2, val);
	return query(2*k+1, (a+b)/2 + 1, b, val);
}

void split(int pos) {
	int Q = get(1, 0, N, pos);
	int l = query(1, 0, N, Q);
	int r = query(1, 0, N, Q + 1) - 1;
	ans += calc(pos - l - 1) + calc(r - pos) - calc(r - l);
	update(1, 0, N, pos, r, pos);
}

string s;
int main() {
	fast
	cin >> N >> M;

	for (int i = 1; i <= N; i++) {
		cin >> s;
		for (int j = M; j >= 1; j--) {
			if (s[j-1] == '.')
				emp[i][j] = emp[i][j+1] + 1;
		}
	}

	ll temp = calc(N);
	for (int j = 1; j <= M; j++) {
		memset(sg, 0, sizeof(sg));
		memset(lazy, -1, sizeof(lazy));

		ans = temp;
		for (int i = 1; i <= N; i++)
			occ[emp[i][j]].push_back(i);

		for (ll q = 0; q <= 2000; q++) {
			total += ans * q;
			while (occ[q].size()) {
				split(occ[q].back());
				occ[q].pop_back();
			}
		}
	}
	cout << total << "\n";
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 604 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 760 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2392 KB Output is correct
2 Correct 26 ms 2136 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2140 KB Output is correct
2 Correct 26 ms 2152 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 2648 KB Output is correct
2 Correct 25 ms 2152 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 322 ms 7144 KB Output is correct
2 Correct 811 ms 12496 KB Output is correct

Subtask #7
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 763 ms 11000 KB Output is correct
2 Execution timed out 1052 ms 15776 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #8
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 505 ms 7540 KB Output is correct
2 Correct 894 ms 13460 KB Output is correct

Subtask #9
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 8916 KB Output is correct
2 Execution timed out 1022 ms 17984 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #10
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1042 ms 21572 KB Time limit exceeded
2 Halted 0 ms 0 KB -