Submission #1008855

#	Time	Username	Problem	Language	Result	Execution time	Memory
1008855		Ausp3x	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	436 KiB

molecules

// 人外有人，天外有天
// author: Ausp3x

#pragma GCC optimize("O1, O2, O3, Ofast, unroll-loops")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
typedef long long             lng;
typedef unsigned int          uint;
typedef unsigned long long    ulng;
using namespace std;
using namespace __gnu_pbds;

int const INF32 = 0x3f3f3f3f;
lng const INF64 = 0x3f3f3f3f3f3f3f3f;

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();

    vector<int> dp(u + 1, -1);
    for (int i = 0; i < n; i++)
        for (int j = u; j >= 0; j--) {
            if (j - w[i] < 0)
                continue;

            if (j - w[i] == 0) {
                dp[j] = i;
                continue;
            }

            if (dp[j] != -1 || dp[j - w[i]] == -1)
                continue;
            
            dp[j] = i;
        }

    // for (int i = 0; i <= u; i++)
    //     cout << dp[i] << ' ';
    // cout << endl;

    vector<int> ans;
    for (int i = l; i <= u; i++) {
        if (dp[i] == -1)
            continue;

        int ii = i;
        while (ii > 0) {
            ans.push_back(dp[ii]);
            ii -= w[dp[ii]];
        }

        break;
    }

    return ans;
}

/*
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int t = 1;
    cin >> t;
    while (t--) {
        int l, u, n;
        cin >> l >> u >> n;
        vector<int> w(n);
        for (int &x : w)
            cin >> x;
        
        vector<int> ans = find_subset(l, u, w);

        cout << ans.size() << endl;
        for (int x : ans)
            cout << x << ' ';
        cout << endl;
    }

    return 0;
}
//*/

Compilation message (stderr)

molecules.cpp:4:55: warning: bad option '-f O2' to pragma 'optimize' [-Wpragmas]
    4 | #pragma GCC optimize("O1, O2, O3, Ofast, unroll-loops")
      |                                                       ^
molecules.cpp:4:55: warning: bad option '-f O3' to pragma 'optimize' [-Wpragmas]
molecules.cpp:4:55: warning: bad option '-f Ofast' to pragma 'optimize' [-Wpragmas]
molecules.cpp:4:55: warning: bad option '-f unroll-loops' to pragma 'optimize' [-Wpragmas]
molecules.cpp:16:52: warning: bad option '-f O2' to attribute 'optimize' [-Wattributes]
   16 | vector<int> find_subset(int l, int u, vector<int> w) {
      |                                                    ^
molecules.cpp:16:52: warning: bad option '-f O3' to attribute 'optimize' [-Wattributes]
molecules.cpp:16:52: warning: bad option '-f Ofast' to attribute 'optimize' [-Wattributes]
molecules.cpp:16:52: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes]

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31