Submission #951585

#	Time	Username	Problem	Language	Result	Execution time	Memory
951585		SamNguyen	Knapsack (NOI18_knapsack)	C++14	73 / 100	1068 ms	2904 KiB

knapsack

#include <bits/stdc++.h>

using namespace std;

#define FNAME "test"

typedef long long ll;

const int N = 1e5 + 5;
const int W = 2005;

int n, w;
int v[N], m[N], c[N];
ll dp[W];

void Task() {
	ios_base::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	cout << fixed << setprecision(9);
	if (fopen(FNAME".inp","r")) {
		freopen(FNAME".inp","r",stdin);
		freopen(FNAME".out","w",stdout);
	}
}

void Solve() {
	//Your Code
	cin >> w >> n;
	for (int i = 1; i <= n; i++) cin >> v[i] >> m[i] >> c[i];
	memset(dp, 0, sizeof(dp));
	for (int i = 1; i <= n; i++) {
		for (int j = w; j >= m[i]; j--) {
			for (int k = 1; (k * m[i] <= j) && (k <= c[i]); k++) {
				dp[j] = max(dp[j], dp[j - k * m[i]] + 1LL * k * v[i]);
			}
		}
	}
	cout << dp[w] << '\n';
}

int main() {
	Task();
	Solve();
	cerr << "\nTime run: " << 1000*clock()/CLOCKS_PER_SEC << "ms";
	return 37^37;
}

Compilation message (stderr)

knapsack.cpp: In function 'void Task()':
knapsack.cpp:21:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |   freopen(FNAME".inp","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:22:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |   freopen(FNAME".out","w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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