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Submission #613569

# Submission time Handle Problem Language Result Execution time Memory
613569 2022-07-30T06:12:02 Z anirudh001 Knapsack (NOI18_knapsack) C++14
100 / 100
 153 ms 36340 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll N = 1e6;

int main()
{
    // #ifndef ONLINE_JUDGE
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    // #endif
    
    ll s, n;
    cin >> s >> n;
    map<ll, vector<pair<ll, ll>>> mp;
    for(int i = 0; i<n; i++){
        ll v, w, k;
        cin >> v >> w >> k;

        if(w<=s && k>0){
            mp[w].push_back({v, k});
        }
    }
    ll m = mp.size();
    ll ans = 0;
    vector<vector<ll>> dp(m+1, vector<ll>(s+1,  LONG_LONG_MIN));
    dp[0][0] = 0;
    ll i = 1;
    for(auto x: mp){
        auto items = x.second; 
        auto w = x.first;  
        sort(items.begin(), items.end(), greater<pair<ll, ll>>());
        
        for(int j=0; j<=s; j++){
            dp[i][j] = dp[i-1][j];
            ll copies = 0, k = 0, cur = 0, profit = 0;
            while((copies+1)*w<=j && k<items.size()){
                copies++;
                profit+=items[k].first;
                if(dp[i-1][j-copies*w]!=LONG_LONG_MIN){
                    dp[i][j] = max(dp[i][j], dp[i-1][j-copies*w] + profit);
                }
                cur++;
                if(cur==items[k].second){
                    cur = 0;
                    k++;
                }
            }
            ans = max(dp[i][j],ans);
        }
        
        i++;
    }

    cout << ans << endl;
    return 0;
}

Compilation message

knapsack.cpp: In function 'int main()':
knapsack.cpp:37:39: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |             while((copies+1)*w<=j && k<items.size()){
      |                                      ~^~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 2 ms 1748 KB Output is correct
7 Correct 2 ms 1836 KB Output is correct
8 Correct 2 ms 1748 KB Output is correct
9 Correct 2 ms 1748 KB Output is correct
10 Correct 2 ms 1704 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 2 ms 1748 KB Output is correct
7 Correct 2 ms 1836 KB Output is correct
8 Correct 2 ms 1748 KB Output is correct
9 Correct 2 ms 1748 KB Output is correct
10 Correct 2 ms 1704 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 3 ms 340 KB Output is correct
13 Correct 1 ms 296 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 2 ms 1748 KB Output is correct
17 Correct 2 ms 1792 KB Output is correct
18 Correct 2 ms 1832 KB Output is correct
19 Correct 2 ms 1704 KB Output is correct
20 Correct 2 ms 1876 KB Output is correct

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 2 ms 1748 KB Output is correct
11 Correct 2 ms 1836 KB Output is correct
12 Correct 2 ms 1748 KB Output is correct
13 Correct 2 ms 1748 KB Output is correct
14 Correct 2 ms 1704 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 1 ms 296 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 2 ms 1748 KB Output is correct
21 Correct 2 ms 1792 KB Output is correct
22 Correct 2 ms 1832 KB Output is correct
23 Correct 2 ms 1704 KB Output is correct
24 Correct 2 ms 1876 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 6 ms 348 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 1748 KB Output is correct
31 Correct 2 ms 1836 KB Output is correct
32 Correct 2 ms 1748 KB Output is correct
33 Correct 2 ms 1832 KB Output is correct
34 Correct 3 ms 1836 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 304 KB Output is correct
10 Correct 2 ms 1748 KB Output is correct
11 Correct 2 ms 1836 KB Output is correct
12 Correct 2 ms 1748 KB Output is correct
13 Correct 2 ms 1748 KB Output is correct
14 Correct 2 ms 1704 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 1 ms 296 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 2 ms 1748 KB Output is correct
21 Correct 2 ms 1792 KB Output is correct
22 Correct 2 ms 1832 KB Output is correct
23 Correct 2 ms 1704 KB Output is correct
24 Correct 2 ms 1876 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 6 ms 348 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 3 ms 1748 KB Output is correct
31 Correct 2 ms 1836 KB Output is correct
32 Correct 2 ms 1748 KB Output is correct
33 Correct 2 ms 1832 KB Output is correct
34 Correct 3 ms 1836 KB Output is correct
35 Correct 69 ms 6092 KB Output is correct
36 Correct 84 ms 6336 KB Output is correct
37 Correct 72 ms 6152 KB Output is correct
38 Correct 76 ms 4004 KB Output is correct
39 Correct 96 ms 4788 KB Output is correct
40 Correct 153 ms 36340 KB Output is correct
41 Correct 116 ms 35568 KB Output is correct
42 Correct 133 ms 35580 KB Output is correct
43 Correct 128 ms 35600 KB Output is correct
44 Correct 127 ms 35404 KB Output is correct
45 Correct 104 ms 7872 KB Output is correct
46 Correct 89 ms 6976 KB Output is correct
47 Correct 109 ms 11224 KB Output is correct
48 Correct 119 ms 20488 KB Output is correct
49 Correct 85 ms 4916 KB Output is correct
50 Correct 100 ms 4780 KB Output is correct