You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
#include <bits/stdc++.h>
|
|
|
|
|
|
|
|
|
|
using namespace std;
|
|
|
|
|
/**
|
|
|
|
|
*9. 背包问题的变化
|
|
|
|
|
1)题目:
|
|
|
|
|
输出01背包的具体方案
|
|
|
|
|
2)输入:
|
|
|
|
|
同01背包
|
|
|
|
|
* @return
|
|
|
|
|
*/
|
|
|
|
|
#define maxV 1000
|
|
|
|
|
#define maxN 100
|
|
|
|
|
|
|
|
|
|
int main(void) {
|
|
|
|
|
int cases, n, v, ci[maxN], wi;
|
|
|
|
|
int f[maxV];
|
|
|
|
|
bool g[maxN][maxV]; //g[i][v]=0 表示没放i时的f(i, v)较大,
|
|
|
|
|
//g[i][v]=1 表示放进i时的f(i, v)较大
|
|
|
|
|
freopen("../9.txt", "r", stdin);
|
|
|
|
|
cin >> cases;
|
|
|
|
|
while (cases--) {
|
|
|
|
|
memset(f, 0, sizeof(f));
|
|
|
|
|
memset(g, 0, sizeof(g));
|
|
|
|
|
cin >> n >> v;
|
|
|
|
|
for (int i = 0; i < n; i++) {
|
|
|
|
|
cin >> ci[i] >> wi;
|
|
|
|
|
for (int j = v; j >= 0; j--) {
|
|
|
|
|
if (j >= ci[i]) {
|
|
|
|
|
if (f[j - ci[i]] + wi > f[j]) {
|
|
|
|
|
f[j] = f[j - ci[i]] + wi;
|
|
|
|
|
g[i][j] = 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int i = n - 1, j = v;
|
|
|
|
|
while (i >= 0) {
|
|
|
|
|
if (g[i][j] == 1) {
|
|
|
|
|
cout << "选了" << i << endl;
|
|
|
|
|
j -= ci[i];
|
|
|
|
|
} else {
|
|
|
|
|
cout << "没选" << i << endl;
|
|
|
|
|
}
|
|
|
|
|
i--;
|
|
|
|
|
}
|
|
|
|
|
cout << endl;
|
|
|
|
|
}
|
|
|
|
|
}
|