Submission #767918

#	Time	Username	Problem	Language	Result	Execution time	Memory
767918		dxz05	Akcija (COCI21_akcija)	C++17	40 / 110	167 ms	31700 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define bpc(x) __builtin_popcount(x)
#define bpcll(x) __builtin_popcountll(x)
#define MP make_pair
#define BIT(x, i) (((x) >> (i)) & 1)
//#define endl '\n'

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

typedef long long ll;
const int MOD = 1e9 + 7;
const int N = 2002;

pair<int, int> p[N];
ll dp[N][N];

void solve(){
    int n, k;
    cin >> n >> k;

    for (int i = 1; i <= n; i++) cin >> p[i].first >> p[i].second;

    sort(p + 1, p + n + 1, [](auto x, auto y) {
        return x.second < y.second;
    });

    if (k == 1) {
        for (int i = 0; i <= n; i++) {
            for (int t = 1; t <= n; t++) {
                dp[i][t] = 1e18;
            }
        }

        for (int i = 1; i <= n; i++) {
            auto [w, d] = p[i];

            for (int t = 0; t <= i; t++) {
                if (d > t) {
                    dp[i][t + 1] = min(dp[i - 1][t + 1], dp[i - 1][t] + w);
                }
            }
        }

        for (int t = n; t >= 1; t--) {
            ll ans = 1e18;
            for (int i = t; i <= n; i++) {
                ans = min(ans, dp[i][t]);
            }
            if (ans != 1e18) {
                cout << t << ' ' << ans << endl;
                return;
            }
        }
    }

    assert(n <= 20);

    vector<pair<int, ll>> v;

    for (int mask = 0; mask < (1 << n); mask++){
        int ok = 1, cnt = 0;
        ll tot = 0;
        for (int i = 1; i <= n; i++){
            if (!BIT(mask, i - 1)) continue;

            if (p[i].second <= cnt){
                ok = 0;
            } else {
                cnt++;
                tot += p[i].first;
            }

        }

        if (ok) v.emplace_back(cnt, -tot);
    }

    sort(rall(v));

    v.resize(k);

    for (auto [x, y] : v) cout << x << ' ' << -y << endl;

}

int main(){
    clock_t startTime = clock();
    ios_base::sync_with_stdio(false);

#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif

    int test_cases = 1;
//    cin >> test_cases;

    for (int test = 1; test <= test_cases; test++){
        // cout << (solve() ? "YES" : "NO") << endl;
        solve();
    }

#ifdef LOCAL
    cerr << "Time: " << int((double) (clock() - startTime) / CLOCKS_PER_SEC * 1000) << " ms" << endl;
#endif

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:92:13: warning: unused variable 'startTime' [-Wunused-variable]
   92 |     clock_t startTime = clock();
      |             ^~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 10 / 10
• Subtask 5: 0 / 30
• Subtask 6: 0 / 20