OJ-Problems-Source/HDOJ/2834_autoAC.cpp

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C++
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#include <stdio.h>
#include <string.h>
#define For(i, n) for(i=0; i<(n); i++)
const int N = 64;
double P[N][N];
double A[N][N];
int out[N];
int t;
double s[N];
int n, m;
double dp[N][N];
double dpx[N][N];
int pre[N][N];
int ppt[N];
void read()
{
int i, j;
For(i, n)
scanf("%lf", &s[i]);
For(i, n)
For(j, n)
scanf("%lf", &P[i][j]);
For(i, n)
For(j, m)
scanf("%lf", &A[i][j]);
For(i, n)
{
s[i] /= 100;
For(j, n)
P[i][j] /= 100, A[i][j] /= 100;
}
scanf("%d", &t);
For(i, t)
scanf("%d", &out[i]);
For(i, t)
out[i] -= 1;
}
void doit()
{
memset(dpx, 0, sizeof(dpx));
int i, j, k;
double tmp;
For(j, n)
{
dp[0][j] = s[j];
dpx[0][j] = dp[0][j] * A[j][out[0]];
}
for (i = 1; i < t; i++)
{
For(j, n)
{
For(k, n)
{
tmp = dpx[i - 1][k] * P[k][j] * A[j][out[i]];
if (tmp > dpx[i][j])
{
dpx[i][j] = tmp;
dp[i][j] = dp[i - 1][k] * P[k][j];
pre[i][j] = k;
}
}
}
}
}
void pt()
{
int i;
int tmp;
double mx = 0;
For(i, n)
if (dpx[t - 1][i] > mx)
{
mx = dpx[t - 1][i];
tmp = i;
}
ppt[t - 1] = tmp;
for (i = n-1; i > 0; i--)
{
ppt[i - 1] = pre[i][tmp];
tmp = ppt[i - 1];
}
For(i, t)
{
if (i)
putchar(' ');
printf("%d", ppt[i] + 1);
}
puts("");
}
int main()
{
while (2 == scanf("%d %d", &n, &m))
{
read();
doit();
pt();
}
return 0;
}