Submission #1069076

#	Time	Username	Problem	Language	Result	Execution time	Memory
1069076		vjudge1	Knapsack (NOI18_knapsack)	C++17	Compilation error	0 ms	0 KiB

knapsack

    bool pro[s + 1] = {false};
    pro[0] = true;
    map<int, int> mp;
    for(int x = 1; x < 2001; x++) mp[x] = s/x;
    vector<pii> choose;
    vector<iii> a;
    for(int x = 0; x < n; x++)
    {
        int v, w, k; cin >> v >> w >> k;
        a.push_back({v, w, k});
    }
    sort(a.begin(), a.end());
    for(iii t : a)
    {
        int v = get<0>(t);
        int w = get<1>(t);
        int k = get<2>(t);
        if(mp[w] >= k)
        {
            for(int x = 0; x < k; x++) choose.push_back({v, w});
            mp[w] -= k;
        }
        else
        {
            for(int x = 0; x < mp[w]; x++) choose.push_back({v, w});
            mp[w] = 0;
        }
    }
    int mx = 0;
    for(pii p : choose)
    {
        //cout << p.f << " " << p.s << "\n";
        for(int x = s; x >= 0; x--)
        {
            if(x - p.s >= 0)
            {
                if(pro[x - p.s])
                {
                    pro[x] = true;
                    dp[x] = max(dp[x], dp[x - p.s] + p.f);
                    mx = max(mx, dp[x]);
                }
            }
        }
    }
    cout << mx;
}
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
	//freopen("wormsort.in", "r", stdin);
	//freopen("wormsort.out", "w", stdout);
    int t = 1;
    //cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}

Compilation message (stderr)

knapsack.cpp:1:14: error: 's' was not declared in this scope
    1 |     bool pro[s + 1] = {false};
      |              ^
knapsack.cpp:2:5: error: 'pro' does not name a type
    2 |     pro[0] = true;
      |     ^~~
knapsack.cpp:3:5: error: 'map' does not name a type
    3 |     map<int, int> mp;
      |     ^~~
knapsack.cpp:4:5: error: expected unqualified-id before 'for'
    4 |     for(int x = 1; x < 2001; x++) mp[x] = s/x;
      |     ^~~
knapsack.cpp:4:20: error: 'x' does not name a type
    4 |     for(int x = 1; x < 2001; x++) mp[x] = s/x;
      |                    ^
knapsack.cpp:4:30: error: 'x' does not name a type
    4 |     for(int x = 1; x < 2001; x++) mp[x] = s/x;
      |                              ^
knapsack.cpp:5:5: error: 'vector' does not name a type
    5 |     vector<pii> choose;
      |     ^~~~~~
knapsack.cpp:6:5: error: 'vector' does not name a type
    6 |     vector<iii> a;
      |     ^~~~~~
knapsack.cpp:7:5: error: expected unqualified-id before 'for'
    7 |     for(int x = 0; x < n; x++)
      |     ^~~
knapsack.cpp:7:20: error: 'x' does not name a type
    7 |     for(int x = 0; x < n; x++)
      |                    ^
knapsack.cpp:7:27: error: 'x' does not name a type
    7 |     for(int x = 0; x < n; x++)
      |                           ^
knapsack.cpp:12:9: error: expected constructor, destructor, or type conversion before '(' token
   12 |     sort(a.begin(), a.end());
      |         ^
knapsack.cpp:13:5: error: expected unqualified-id before 'for'
   13 |     for(iii t : a)
      |     ^~~
knapsack.cpp:30:5: error: expected unqualified-id before 'for'
   30 |     for(pii p : choose)
      |     ^~~
knapsack.cpp:46:5: error: 'cout' does not name a type
   46 |     cout << mx;
      |     ^~~~
knapsack.cpp:47:1: error: expected declaration before '}' token
   47 | }
      | ^
knapsack.cpp: In function 'int main()':
knapsack.cpp:50:5: error: 'ios_base' has not been declared
   50 |     ios_base::sync_with_stdio(0);
      |     ^~~~~~~~
knapsack.cpp:51:5: error: 'cin' was not declared in this scope
   51 |     cin.tie(0), cout.tie(0);
      |     ^~~
knapsack.cpp:51:17: error: 'cout' was not declared in this scope
   51 |     cin.tie(0), cout.tie(0);
      |                 ^~~~
knapsack.cpp:58:9: error: 'solve' was not declared in this scope
   58 |         solve();
      |         ^~~~~