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0-1 knapsack.cpp #74

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6e5f8f2
Create 0-1 knapsack.cpp
Adrito-M May 30, 2022
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Update 0-1 knapsack.cpp
Adrito-M May 30, 2022
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25 changes: 25 additions & 0 deletions c++/0-1 knapsack.cpp
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#include <bits/stdc++.h>
using namespace std;


int weight[] = {10, 20, 30};
int value[] = {60, 100, 120};
int dp[1000][1000];

int knapsack(int weight_left, int index) {
if (index == -1 or weight_left < weight[index]) return 0;
if (~dp[weight_left][index]) return dp[weight_left][index];
int a = knapsack(weight_left, index-1);
int b = knapsack(weight_left - weight[index], index-1) + value[index];
return dp[weight_left][index] = max(a, b);
}

int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
memset(dp, -1, sizeof dp);
int bag_weight = 50;
int items = 3;
cout << knapsack(bag_weight, items);
}