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QOJ

IDSubmission IDProblemHackerOwnerResultSubmit timeJudge time
#612#392200#7403. Subset Sum5sbieeSuccess!2024-05-04 13:41:302024-05-04 13:41:31

Details

Extra Test:

Wrong Answer
time: 1010ms
memory: 4380kb

input:

1
20000 200000000
19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 19999 ...

output:

199999903

result:

wrong answer 1st numbers differ - expected: '200000000', found: '199999903'

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#392200#7403. Subset SumieeWA 1040ms4528kbC++14759b2024-04-17 11:16:042024-05-04 13:43:38

answer

#include <bits/stdc++.h>
using namespace std;
void solve() {
	int n, c;
	cin >> n >> c;
	vector<int> a(n);
	for (int &x : a) {
		cin >> x;
	}
	sort(a.begin(), a.end());
	int w = 0;
	for (int &x : a) {
		if (x <= c) {
			c -= x;
			w += x;
			x *= -1;
		}
	}
	static mt19937 eng(chrono::steady_clock::now().time_since_epoch().count());
	constexpr int N = 1e6 + 5;
	bitset<N + N> f;
	f[N] = 1;
	shuffle(a.begin(), a.end(), eng);
	for (int x : a) {
		if (x > 0) f |= f << x;
		else f |= f >> -x;
	}
	c = min(c, N - 1);
	for (int i = N + c; ; i--) {
		if (f[i]) {
			cout << i - N + w << "\n";
			return;
		}
	}
}
int main() {
	cin.tie(0)->sync_with_stdio(0);
	int t;
	cin >> t;
	while (t--) {
		solve();
	}
	return 0;
}