Submission #692459

#	Time	Username	Problem	Language	Result	Execution time	Memory
692459		aedmhsn	Knapsack (NOI18_knapsack)	C++17	0 / 100	28 ms	32176 KiB

knapsack

#include <bits/stdc++.h>
 
using namespace std;
 
 
#define A first
#define B second
#define MP make_pair
#define ms(a, x) memset(a, x, sizeof(a)) 
 
 
#define boost() ios_base::sync_with_stdio(false); cin.tie(); cout.tie()
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long double, long double> pld;
const int INF = 0x3f3f3f3f;
const ll LLINF = 0x3f3f3f3f3f3f3f3f;
const double PI = acos(-1);

const int mxN=2e3+2;

vector <pii> withw[mxN];
int dp[mxN][mxN]={};

int main(){
    int s, n;
    cin >> s >> n;
    for(int i=0; i<n; i++){
        int v, w, k;
        cin >> v >> w >> k;
        withw[w].push_back(MP(v, k));
    }
    for(int i=1; i<=mxN; i++){
        sort(withw[i].begin(), withw[i].end());
        for(int j=1; j<=s; j++){
            dp[i][j] = dp[i-1][j];
            int totalval=0, totalw=0;
            for(auto [val, amnt]:withw[i]){
                int temp=1;
                while(temp <= amnt && j >= totalw){
                    totalval+=val;
                    totalw+=i;
                    dp[i][j] = max(dp[i][j], dp[i-1][j-totalw]+totalval);
                    temp++;
                }
            }
        }
    }
    cout << dp[mxN][s];
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:52:19: warning: array subscript 2002 is above array bounds of 'int [2002][2002]' [-Warray-bounds]
   52 |     cout << dp[mxN][s];
      |             ~~~~~~^
knapsack.cpp:26:5: note: while referencing 'dp'
   26 | int dp[mxN][mxN]={};
      |     ^~

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