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Submission #793625

# Submission time Handle Problem Language Result Execution time Memory
793625 2023-07-26T04:47:19 Z GEN 이지후(#10094) Triangle Collection (CCO23_day2problem3) C++17
10 / 25
 4000 ms 3064 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()

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 matching = 0;
		auto b = a;
		vector<int> odds;
		for (int i = n; i >= 1; i--) {
			if (a[i - 1] % 2 == 1) {
				odds.push_back(i);
			}
		}
		int ptr = n - 1;
		for (auto &x : odds) {
			while (ptr >= x / 2 && b[ptr] <= 1)
				ptr--;
			if (ptr >= x / 2 && b[ptr] > 1) {
				b[ptr] -= 2;
				matching++;
			}
		}
		lint moksum = 0;
		for (int i = 1; i <= n; i++) {
			moksum += a[i - 1] / 2;
		}
		return matching + (2 * moksum - 2 * matching) / 3;
	};
	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 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 2 ms 212 KB Output is correct
6 Correct 22 ms 340 KB Output is correct
7 Correct 22 ms 352 KB Output is correct
8 Correct 14 ms 340 KB Output is correct
9 Correct 22 ms 340 KB Output is correct
10 Correct 26 ms 340 KB Output is correct
11 Correct 22 ms 344 KB Output is correct
12 Correct 22 ms 340 KB Output is correct
13 Correct 22 ms 352 KB Output is correct
14 Correct 12 ms 340 KB Output is correct

Subtask #2
5.0 / 5.0

# 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 2 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 2 ms 212 KB Output is correct
6 Correct 22 ms 340 KB Output is correct
7 Correct 22 ms 352 KB Output is correct
8 Correct 14 ms 340 KB Output is correct
9 Correct 22 ms 340 KB Output is correct
10 Correct 26 ms 340 KB Output is correct
11 Correct 22 ms 344 KB Output is correct
12 Correct 22 ms 340 KB Output is correct
13 Correct 22 ms 352 KB Output is correct
14 Correct 12 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 21 ms 356 KB Output is correct
18 Correct 21 ms 340 KB Output is correct
19 Correct 21 ms 368 KB Output is correct
20 Correct 21 ms 376 KB Output is correct
21 Correct 23 ms 352 KB Output is correct
22 Correct 14 ms 352 KB Output is correct
23 Correct 23 ms 352 KB Output is correct
24 Correct 22 ms 348 KB Output is correct
25 Correct 21 ms 364 KB Output is correct
26 Correct 24 ms 340 KB Output is correct
27 Correct 26 ms 340 KB Output is correct
28 Correct 0 ms 212 KB Output is correct

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 344 KB Output is correct
2 Correct 24 ms 340 KB Output is correct
3 Correct 63 ms 688 KB Output is correct
4 Execution timed out 4056 ms 2912 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 348 KB Output is correct
2 Correct 21 ms 368 KB Output is correct
3 Correct 22 ms 372 KB Output is correct
4 Correct 23 ms 352 KB Output is correct
5 Execution timed out 4043 ms 3064 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# 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 2 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 2 ms 212 KB Output is correct
6 Correct 22 ms 340 KB Output is correct
7 Correct 22 ms 352 KB Output is correct
8 Correct 14 ms 340 KB Output is correct
9 Correct 22 ms 340 KB Output is correct
10 Correct 26 ms 340 KB Output is correct
11 Correct 22 ms 344 KB Output is correct
12 Correct 22 ms 340 KB Output is correct
13 Correct 22 ms 352 KB Output is correct
14 Correct 12 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 21 ms 356 KB Output is correct
18 Correct 21 ms 340 KB Output is correct
19 Correct 21 ms 368 KB Output is correct
20 Correct 21 ms 376 KB Output is correct
21 Correct 23 ms 352 KB Output is correct
22 Correct 14 ms 352 KB Output is correct
23 Correct 23 ms 352 KB Output is correct
24 Correct 22 ms 348 KB Output is correct
25 Correct 21 ms 364 KB Output is correct
26 Correct 24 ms 340 KB Output is correct
27 Correct 26 ms 340 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 24 ms 344 KB Output is correct
30 Correct 24 ms 340 KB Output is correct
31 Correct 63 ms 688 KB Output is correct
32 Execution timed out 4056 ms 2912 KB Time limit exceeded
33 Halted 0 ms 0 KB -