01:Charm Bracelet
Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible from theN(1 ≤N≤ 3,402) available charms. Each charmiin the supplied list has a weightWi(1 ≤Wi≤ 400), a 'desirability' factorDi(1 ≤Di≤ 100), and can be used at most once. Bessie can only support a charm bracelet whose weight is no more thanM(1 ≤M≤ 12,880).
Given that weight limit as a constraint and a list of the charms with their weights and desirability rating, deduce the maximum possible sum of ratings.
Lines 2..N+1: Line i+1 describes charm i with two space-separated integers: Wi and Di輸出Line 1: A single integer that is the greatest sum of charm desirabilities that can be achieved given the weight constraints樣例輸入
4 6
1 4
2 6
3 12
2 7
樣例輸出
23
代碼實現
#include <iostream>
#include <cstdio>
#include <queue>
#include <vector>
#include <map>
using namespace std;
const int maxn = 100000+5;
int main()
{
int n, m;
int w[maxn], v[maxn];
int dp[maxn];
cin >> n >> m;
for(int i=1; i<=n; i++)
cin >> w[i] >> v[i];
for(int i=1; i<=n; i++)
for(int j=m; j>=w[i]; j--)
dp[j] = max(dp[j] , dp[j-w[i]]+v[i]);
cout << dp[m] <<endl;
return 0;
}