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Submission #793619

# Submission time Handle Problem Language Result Execution time Memory
793619 2023-07-26T04:42:10 Z GEN 이지후(#10094) Triangle Collection (CCO23_day2problem3) C++17
10 / 25
 4000 ms 3024 KB 
#include <bits/stdc++.h>
using namespace std;
using lint = long long;
using pi = array<int, 2>;
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
const int MAXN = 2005;

struct fen {
	pi tree[MAXN];
	void clear() { fill(tree, tree + MAXN, pi{int(1e9), -1}); }
	void add(int x, pi v) {
		for (int i = x + 2; i < MAXN; i += i & -i)
			tree[i] = min(tree[i], v);
	}
	pi query(int x) {
		pi ret{int(1e9), -1};
		for (int i = x + 2; i; i -= i & -i)
			ret = min(ret, tree[i]);
		return ret;
	}
} bit;
pi dp[MAXN][MAXN];

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n, q;
	cin >> n >> q;
	vector<int> a(n);
	for (auto &x : a)
		cin >> x;
	auto solve = [&]() {
		lint ans = 0;
		auto b = a;
		vector<int> odds;
		for (int i = n; i >= 1; i--) {
			if (b[i - 1] % 2 == 1) {
				odds.push_back(i);
				b[i - 1]--;
			}
		}
		int ptr = n - 1;
		for (auto &x : odds) {
			while (ptr >= x / 2 && b[ptr] == 0)
				ptr--;
			if (ptr >= x / 2 && b[ptr] > 0) {
				b[ptr] -= 2;
				ans++;
			}
		}
		lint cnt = 0;
		for (int i = 1; i <= n; i++) {
			cnt += b[i - 1];
		}
		ans += cnt / 3;
		return ans;
	};
	while (q--) {
		int i, d;
		cin >> i >> d;
		a[i - 1] += d;
		cout << solve() << "\n";
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 21 ms 356 KB Output is correct
7 Correct 21 ms 340 KB Output is correct
8 Correct 15 ms 344 KB Output is correct
9 Correct 23 ms 356 KB Output is correct
10 Correct 23 ms 356 KB Output is correct
11 Correct 19 ms 368 KB Output is correct
12 Correct 23 ms 340 KB Output is correct
13 Correct 27 ms 360 KB Output is correct
14 Correct 13 ms 352 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 21 ms 356 KB Output is correct
7 Correct 21 ms 340 KB Output is correct
8 Correct 15 ms 344 KB Output is correct
9 Correct 23 ms 356 KB Output is correct
10 Correct 23 ms 356 KB Output is correct
11 Correct 19 ms 368 KB Output is correct
12 Correct 23 ms 340 KB Output is correct
13 Correct 27 ms 360 KB Output is correct
14 Correct 13 ms 352 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 20 ms 384 KB Output is correct
18 Correct 21 ms 372 KB Output is correct
19 Correct 21 ms 352 KB Output is correct
20 Correct 21 ms 372 KB Output is correct
21 Correct 23 ms 368 KB Output is correct
22 Correct 13 ms 348 KB Output is correct
23 Correct 20 ms 360 KB Output is correct
24 Correct 19 ms 372 KB Output is correct
25 Correct 21 ms 384 KB Output is correct
26 Correct 24 ms 340 KB Output is correct
27 Correct 24 ms 340 KB Output is correct
28 Correct 1 ms 296 KB Output is correct

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 356 KB Output is correct
2 Correct 27 ms 340 KB Output is correct
3 Correct 66 ms 676 KB Output is correct
4 Execution timed out 4062 ms 2860 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 340 KB Output is correct
2 Correct 22 ms 388 KB Output is correct
3 Correct 23 ms 372 KB Output is correct
4 Correct 23 ms 368 KB Output is correct
5 Execution timed out 4040 ms 3024 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 21 ms 356 KB Output is correct
7 Correct 21 ms 340 KB Output is correct
8 Correct 15 ms 344 KB Output is correct
9 Correct 23 ms 356 KB Output is correct
10 Correct 23 ms 356 KB Output is correct
11 Correct 19 ms 368 KB Output is correct
12 Correct 23 ms 340 KB Output is correct
13 Correct 27 ms 360 KB Output is correct
14 Correct 13 ms 352 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 20 ms 384 KB Output is correct
18 Correct 21 ms 372 KB Output is correct
19 Correct 21 ms 352 KB Output is correct
20 Correct 21 ms 372 KB Output is correct
21 Correct 23 ms 368 KB Output is correct
22 Correct 13 ms 348 KB Output is correct
23 Correct 20 ms 360 KB Output is correct
24 Correct 19 ms 372 KB Output is correct
25 Correct 21 ms 384 KB Output is correct
26 Correct 24 ms 340 KB Output is correct
27 Correct 24 ms 340 KB Output is correct
28 Correct 1 ms 296 KB Output is correct
29 Correct 21 ms 356 KB Output is correct
30 Correct 27 ms 340 KB Output is correct
31 Correct 66 ms 676 KB Output is correct
32 Execution timed out 4062 ms 2860 KB Time limit exceeded
33 Halted 0 ms 0 KB -