Submission #776950

#	Time	Username	Problem	Language	Result	Execution time	Memory
776950		qenneth	Knapsack (NOI18_knapsack)	C++17	Compilation error	0 ms	0 KiB

knapsack

#pragma GCC optimize("O3")
#pragma GCC target("popcnt")
#include <bits/stdc++.h>
using namespace std;
#define FASTIO ios_base::sync_with_stdio(false);cin.tie(NULL)
#define all(x) x.begin(), x.end()
#define chmax(x, a) x = max(x, a);
#define chmin(x, a) x = min(x, a);

// usaco
void setIO(string s) {
	freopen((s + ".in").c_str(), "r", stdin);
	freopen((s + ".out").c_str(), "w", stdout);
}

const int MOD = 1e9 + 7;

int main() {
	FASTIO;
	// setIO("snakes");
	int s, n;
	cin >> s >> n;
	vector<vector<int>> a(n, vector<int>(3, 0));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < 3; j++) {
			cin >> a[i][j];
		}
	}
	vector<vector<int>> dp(n + 1, vector<int> (s + 1, 0));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j <= s; j++) {
			dp[i + 1][j] = max(dp[i + 1][j], dp[i][j]);
			for (int k = 0; k <= a[i][2]; k++) {
				if (j + k * a[i][1] <= s) {
					dp[i + 1][j + k * a[i][1]] = max(dp[i + 1][j + 1ll * k * a[i][1]], dp[i][j] + 1ll * k * a[i][0]);
				}
			}
		}
	}
	cout << dp[n][s] << "\n";
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:35:101: error: no matching function for call to 'max(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type&, long long int)'
   35 |      dp[i + 1][j + k * a[i][1]] = max(dp[i + 1][j + 1ll * k * a[i][1]], dp[i][j] + 1ll * k * a[i][0]);
      |                                                                                                     ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from knapsack.cpp:3:
/usr/include/c++/10/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:101: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   35 |      dp[i + 1][j + k * a[i][1]] = max(dp[i + 1][j + 1ll * k * a[i][1]], dp[i][j] + 1ll * k * a[i][0]);
      |                                                                                                     ^
In file included from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from knapsack.cpp:3:
/usr/include/c++/10/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:101: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   35 |      dp[i + 1][j + k * a[i][1]] = max(dp[i + 1][j + 1ll * k * a[i][1]], dp[i][j] + 1ll * k * a[i][0]);
      |                                                                                                     ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from knapsack.cpp:3:
/usr/include/c++/10/bits/stl_algo.h:3480:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3480 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3480:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:101: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   35 |      dp[i + 1][j + k * a[i][1]] = max(dp[i + 1][j + 1ll * k * a[i][1]], dp[i][j] + 1ll * k * a[i][0]);
      |                                                                                                     ^
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from knapsack.cpp:3:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3486:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:101: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   35 |      dp[i + 1][j + k * a[i][1]] = max(dp[i + 1][j + 1ll * k * a[i][1]], dp[i][j] + 1ll * k * a[i][0]);
      |                                                                                                     ^
knapsack.cpp: In function 'void setIO(std::string)':
knapsack.cpp:12:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  freopen((s + ".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((s + ".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~