摘要：
Subset SumsJRM For many sets of consecutive integers from 1 through N (1 #include
using namespace std;
const int mm=2300;
long long f[60][mm];
long long dp(int x,int c)
{ memset(f,0,sizeof(f)); f[1][0]=1;f[1][1]=1; for(int i=2;i=0) f[i][j]=f[i-1][j]+f[i-1][j-i]; else f[i][j]=f[i-1][j]; /*... 阅读全文
摘要：
Preface NumberingA certain book's prefaces are numbered in upper case Roman numerals. Traditional Roman numeral values use a single letter to represent a certain subset of decimal numbers. Here is the standard set: I 1 L 50 M 1000 V 5 C 100 X 10 D 500
... 阅读全文