Submission #826405

#	Time	Username	Problem	Language	Result	Execution time	Memory
826405		NoLove	Knapsack (NOI18_knapsack)	C++14	73 / 100	1081 ms	3924 KiB

knapsack

/**
 *    author : Lăng Trọng Đạt
 *    created: 2023-08-15
**/
#include <bits/stdc++.h>
using namespace std;
#ifndef LANG_DAT
#define db(...) ;
#endif // LANG_DAT
#define int int64_t
using pii = pair<int, int>;

const int MAXN = 1e5 + 5;
int w[MAXN], v[MAXN], k[MAXN];
int n, s;
int dp[MAXN];

int32_t main() {
    cin.tie(0)->sync_with_stdio(0);
    if (fopen("hi.inp", "r")) {
        freopen("hi.inp", "r", stdin);
//        freopen("hi.out", "w", stdout);
    }

    cin >> s >> n;

    for (int i = 0; i < n; i++) {
        cin >> v[i] >> w[i] >> k[i];
    }

    for (int i = 0; i < n; i++) {
        for (int x = 0; x < min(k[i], s); x++) {
            for (int j = s; j >= w[i]; j--) {
                if (j >= w[i]) {
                    dp[j] = max(dp[j], dp[j - w[i]] + v[i]);
                }
            }
        }
    }
    cout << dp[s];
}

Compilation message (stderr)

knapsack.cpp: In function 'int32_t main()':
knapsack.cpp:21:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen("hi.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27