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Re:你们写代码都不写注释,这不是个好习惯,贴我的In Reply To:你们写代码都不写注释,这不是个好习惯,贴我的 Posted by:lafurose at 2017-04-15 11:31:37 > #include<iostream> > #include<algorithm> > using namespace std; > int N, M; //N个物品,包的体积为M > int w[3505], d[3505]; //体积,价值 > int result[13005]; //result[i]表示从从 某些物品 中取出体积为i的最大价值 > int main() > { > scanf("%d%d", &N, &M); > // cin >> N >> M; > for (int i = 1; i <= N; ++i) > { > scanf("%d%d", &w[i], &d[i]); > // cin >> w[i] >> d[i]; > } > result[0] = 0; //取体积为0,价值为0 > > for (int j = 1; j <= M; ++j) //result数组初始化为从第1个物品中取 体积为j 的最大价值,此后不断更新 > if (w[1] > j) > result[j] = 0; > else > result[j] = d[1]; > > for (int i = 2; i < N; ++i) //从前i个物品取体积为j > for (int j = M; j >= 1; --j) > { > if (j >= w[i]) //第i个物品可以取的话,尝试更新 > result[j] = max(result[j], result[j - w[i]] + d[i]); > } > if (M > w[N]) > result[M] = max(result[M], result[M - w[N]] + d[N]); > // cout << result[M] << endl; > printf("%d\n", result[M]); > return 0; > } Followed by: Post your reply here: |
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