oj.uz

Submission #1033291

# Submission time Handle Problem Language Result Execution time Memory
1033291 2024-07-24T16:06:07 Z vjudge1 Knapsack (NOI18_knapsack) C++17
0 / 100
 1000 ms 48216 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

void solve() {
    int s, n;
    cin >> s >> n;
    
    vector<int> dp(s + 1, 0);

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

        for (int b = 1; k > 0; b *= 2) {
            int num = min(b, k);
            k -= num;
            int tv = num * v;
            int tw = num * w;

            for (int j = s; j >= tw; --j) {
                dp[j] = max(dp[j], dp[j - tw] + tv);
            }
        }
    }

    cout << *max_element(dp.begin(), dp.end()) << '\n';
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    // Directly use C-style I/O for even faster performance
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif

    solve();
    return 0;
}

Compilation message

knapsack.cpp: In function 'int main()':
knapsack.cpp:37:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:38:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1044 ms 48208 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1098 ms 48216 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1098 ms 48216 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1044 ms 48208 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1044 ms 48208 KB Time limit exceeded
2 Halted 0 ms 0 KB -