OJ-Problems-Source/HDOJ/2402_autoAC.cpp

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#include "iostream"
#include "algorithm"
#include "cstdio"
#include "cstdlib"
#include "cstring"
using namespace std;
#define $FOREACH(a, b) for(__typeof(b.begin())a=b.begin(), a##ed__=b.end(); a!=a##ed__; a++)
#define $FOREACHC(a, b, cond) for (__typeof(b) a=b;(cond); b++, a=b)
#define $QUEUEPROC(cond, U, V) \
for(int u=(U);cond;u=(U))\
$FOREACH(v, V)
#define $STACKPROC(cond, U, V) \
for (int u=(U); cond; u=(U))\
for (bool child=false; !child; child=true)\
$FOREACHC(v, (V), !child)
#define $ASSERT(a) ({fprintf(stderr,"%s:%d: %s\n", __FILE__, __LINE__, #a); exit(-1);})
int mul[10000], gmul[10000];
int add[10000], gadd[10000];
int F[10000], G[10000];
void pre()
{
for (int i=1; i<=6000; i++)
mul[i] = add[i] = i,
gmul[i] = gadd[i] = 0,
F[i] = i, G[i]=0;
for (int i=1; i<=6000; i++)
for (int j=i-1; j>0; j--)
if (i%j == 0 &&
mul[i] > mul[j] + i/j + 2)
mul[i] = mul[j] + i/j + 2,
gmul[i] = j;
for (int i=1; i<=6000; i++) add[i] = mul[i];
for (int i=1; i<=6000; i++)
for (int j=i-1; j>0; j--)
if (add[i] > add[j] + mul[i-j] + 2)
add[i] = add[j] + mul[i-j]+2,
gadd[i]=j;
}
void printmul(int N)
{
if (gmul[N] == 0)
for (int i=0; i<N; i++)
printf("|");
else
{
printmul(gmul[N]);
printf("x");
for (int i=0; i<N/gmul[N]; i++)
printf("|");
}
}
void print(int N)
{
if (gadd[N] == 0) printmul(N);
else
{
print(gadd[N]);
printf("+");
printmul(N-gadd[N]);
}
}
void printT(int N)
{
if (G[N] == 0) for (int i=0; i<N; i++) printf("|");
else
if (G[N] < 0)
{
printT(-G[N]);
printf("x");
for (int i=0; i<-N/G[N]; i++) printf("|");
}else{
printT(G[N]);
printf("+");
for (int i=0; i<N-G[N]; i++) printf("|");
}
}
int main()
{
pre();
int N;
while (scanf("%d", &N)!=EOF)
{
if (N==0) break;
if (add[N] < mul[N])
{
printf("%d toothpicks: ", add[N]);
print(N);
printf("=%d\n", N);
}else{
printf("%d toothpicks: ", mul[N]);
printmul(N);
printf("=%d\n", N);
}
}
}