Submission #987117

#	Time	Username	Problem	Language	Result	Execution time	Memory
987117		vjudge1	Knapsack (NOI18_knapsack)	C++17	37 / 100	102 ms	4048 KiB

knapsack

#include <iostream>
#include <algorithm>
#include <cstring>
#include <string.h>
#include <vector>
#include <set>
#include <queue>
#include <map>
#include <stdio.h>
#include <math.h>
#include <iomanip>
#include <stdio.h>
#include <stack>
#include <iterator>
#include <numeric>
#include <unordered_map>
#include <cstdlib> 
#include <ctime>
 
#define fto(i, a, b) for (int i = a; i <= b; ++i)
#define fdto(i, a, b) for (int i = a; i >= b; --i)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define vi vector<ll>
#define ii pair<int, int>
#define vii vector<ii>
#define ll long long
#define ull unsigned long long
#define oo 1000000007
#define oooo 1000000000000000007
#define BLOCK 447
#define LOG 19
#define endl "\n"
#define iii pair<ii, int>
#define getbit(x, i) ((x >> i) & 1)
#define TIME cerr << "time: " << (float)clock() / CLOCKS_PER_SEC << " secs \n"

#define maxN 100005
using namespace std;
int s, n;
int v[maxN], w[maxN], k[maxN];
ll f[maxN][2005];
ll dp (int pos, int we){
	if (pos == 0 || we == 0) return 0;
	if (f[pos][we] != -1) return f[pos][we];
	ll res = 0;
	fto(i, 0, k[pos]) if (w[pos]*i <= we) res = max(res, dp(pos-1, we - w[pos]*i) + i*v[pos]);
	return f[pos][we] = res;
}
void solve(){
	cin >> s >> n;
	fto(i, 1, n) cin >> v[i] >> w[i] >> k[i];
	fto(i, 1, n) fto(j, 0, s) f[i][j] = -1;
	cout << dp(n, s) << endl;
}

int main() {
	srand(time(NULL));
 
	ios_base::sync_with_stdio(false); cin.tie(NULL); 
 
	int t = 1; 
	// cin >> t;
	while(t--){
		solve();
	}
	TIME;
	return 0;
}

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