Submission #959830

#	Time	Username	Problem	Language	Result	Execution time	Memory
959830		susanthenerd	Knapsack (NOI18_knapsack)	C++98	Compilation error	0 ms	0 KiB

knapsack

#include <iostream>
#include <algorithm>
#include <map>
#include <vector>
#include <climits>


using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int s, n, m = 0;
    cin >> s >> n;

    vector v(s + 1, vector<pair<int, int>>());

    for (int i = 0; i < n; ++i) {
        int pret, greu, cnt;
        cin >> pret >> greu >> cnt;

        if (greu <= s && cnt > 0) {
            if (v[greu].empty())
                ++m;
            v[greu].emplace_back(pret, cnt);
        }
    }

    vector dp(m + 1, vector<ll>(s + 1, LLONG_MIN));
    dp[0][0] = 0;

    for (int a = 0, i = 0; a <= s; ++a) {
        if (!v[a].empty()) {
            ++i;

            sort(v[a].begin(), v[a].end(), greater<>());
            for (int j = 0; j <= s; ++j) {
                dp[i][j] = dp[i - 1][j];

                int cnt = 0, tip = 0, used = 0;
                ll profit = 0;

                while ((cnt + 1) * a <= j && tip < v[a].size()) {
                    ++cnt;
                    profit += v[a][tip].first;

                    if (dp[i - 1][j - cnt * a] != LLONG_MIN)
                        dp[i][j] = max(dp[i][j], dp[i - 1][j - cnt * a] + profit);

                    ++used;
                    if (used == v[a][tip].second) {
                        used = 0;
                        ++tip;
                    }
                }
            }
        }
    }

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

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:18:12: error: missing template arguments before 'v'
   18 |     vector v(s + 1, vector<pair<int, int>>());
      |            ^
knapsack.cpp:25:17: error: 'v' was not declared in this scope
   25 |             if (v[greu].empty())
      |                 ^
knapsack.cpp:27:13: error: 'v' was not declared in this scope
   27 |             v[greu].emplace_back(pret, cnt);
      |             ^
knapsack.cpp:31:12: error: missing template arguments before 'dp'
   31 |     vector dp(m + 1, vector<ll>(s + 1, LLONG_MIN));
      |            ^~
knapsack.cpp:32:5: error: 'dp' was not declared in this scope
   32 |     dp[0][0] = 0;
      |     ^~
knapsack.cpp:35:14: error: 'v' was not declared in this scope
   35 |         if (!v[a].empty()) {
      |              ^