题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1963
题目意思:有 本金 money,还有一些股票的种类,第 i 种股票买入需要 value[i] 这么多钱,相应会有一定的利息interest[i],问经过若干年 year 后,每年都以最优的方案投资,总的资金有多少?
完全背包题,不过要看清楚 这句话:The value of a bond is always a multiple of $1 000,否则TLE了
1 #include2 #include 3 #include 4 using namespace std; 5 6 const int maxn = 1e6 + 5; 7 8 typedef long long ll; 9 int value[maxn], interest[maxn];10 ll dp[maxn], ans, money, tolmoney;11 12 int main()13 {14 int kind, tcase, year;15 while (scanf("%d", &tcase) != EOF)16 {17 while (tcase--)18 {19 scanf("%lld%d", &money, &year);20 scanf("%d", &kind);21 for (int i = 0; i < kind; i++)22 {23 scanf("%d%d", &value[i], &interest[i]);24 value[i] /= 1000;25 }26 memset(dp, 0, sizeof(dp));27 ans = 0, tolmoney = money;28 for (int j = 0; j < year; j++)29 {30 if (j != 0)31 money = tolmoney;32 money /= 1000;33 for (int i = 0; i < kind; i++)34 {35 for (int k = value[i]; k <= money; k++)36 {37 dp[k] = max(dp[k], dp[k-value[i]] + interest[i]);38 ans = max(dp[k], ans);39 }40 }41 tolmoney += ans;42 }43 printf("%lld\n", tolmoney);44 }45 }46 return 0;47 }