DP: dp[i][j]前i堆放j序列长度有多少行法, dp[i][j]=dp[i-1][j] (不用第i堆), dp[i][j]+=dp[i-1][j-k]*C[j][k] (用第i堆的k个石头) A Famous Stone Collector Time Limit: 30000/15000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 845 Accepted Su…
A Famous Stone Collector Problem Description Mr. B loves to play with colorful stones. There are n colors of stones in his collection. Two stones with the same color are indistinguishable. Mr. B would like to select some stones and arrange them in l…
A Famous Stone Collector Time Limit: 30000/15000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 793 Accepted Submission(s): 292 Problem Description Mr. B loves to play with colorful stones. There are n colors of…
HDOJ 1257 最少拦截系统 [DP] Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 50753 Accepted Submission(s): 19895 Problem Description 某国为了防御敌国的导弹袭击,发展出一种导弹拦截系统.但是这种导弹拦截系统有一个缺陷:虽然它的第一发炮弹能够到达任意的高度,但是以后每一发炮弹…
DP: DP[len][k][i][j] 再第len位,第一个数len位为i,第二个数len位为j,和的第len位为k 每一位能够从后面一位转移过来,能够进位也能够不进位 A Famous Equation Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 500 Accepted Submission(s): 147 Proble…
dp[i][j]表示前i个,炸j条路,并且最后一个炸在i的后面时,一到i这一段的最小价值. dp[i][j]=min(dp[i][k]+w[k+1][i]) w[i][j]表示i到j这一段的价值. #include <iostream> #include <cstdio> #include <cstring> using namespace std; const int maxn=1e3+9; int a[maxn]; long long dp[maxn][maxn],…