oj.uz

답안 #1033440

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1033440 2024-07-24T20:32:15 Z cryptobunny Knapsack (NOI18_knapsack) C++14
37 / 100
 1 ms 600 KB 
#include <iostream>
#include <vector>
#include <cassert>
using namespace std;

int dp[2001];

int main() {
    int s, n;
    cin >> s >> n;
    vector<int> val, cost;

    for (int i = 0; i < n; i++) {
        int v, w, k;
        cin >> v >> w >> k;
        int j;
        for (j = 30; j >= 1; j--) {
            if (k >= (1 << j)) {
                break;
            }
        }
        for (int x = 0; x < j; x++) {
            val.push_back(v << x);
            cost.push_back(w << x);
            k -= 1 << x;
        }
        if (k) {
            val.push_back(v * k);
            cost.push_back(w * k);
        }
    }
    // vector<int> dp(s + 1);
    int ans = 0;
    for (int i = 0; i < val.size(); i++) {
        assert(i < cost.size());
        // cout << val[i] << " " << cost[i] << endl;
        for (int w = s; w >= cost[i]; w--) {
            dp[w] = max(dp[w], dp[w - cost[i]] + val[i]);
            ans = max(ans, dp[w]);
        }
    }
    cout << ans << endl;
}

Compilation message

knapsack.cpp: In function 'int main()':
knapsack.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for (int i = 0; i < val.size(); i++) {
      |                     ~~^~~~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from knapsack.cpp:3:
knapsack.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |         assert(i < cost.size());
      |                ~~^~~~~~~~~~~~~

Subtask #1
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 1 ms 348 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 352 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 0 ms 352 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 436 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 352 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 0 ms 352 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 436 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 0 ms 352 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #4
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 1 ms 348 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Runtime error 1 ms 348 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -