OJ-Problems-Source/HDOJ/1082_autoAC.cpp
2016-08-12 10:52:18 +08:00

64 lines
1.6 KiB
C++

#include <iostream>
#include <stack>
using namespace std;
const int MATRIX_LEN = 30;
const int INPUT_LEN = 200;
class Matrix
{
public:
char name[2];
int row, col;
};
Matrix matrices[MATRIX_LEN];
stack<Matrix> stackMatrices;
int main ()
{
int matricesNum;
scanf("%d",&matricesNum);
Matrix aMatrix;
for (int i = 0;i < matricesNum;i ++)
{
scanf("%s%d%d",aMatrix.name,&aMatrix.row,&aMatrix.col);
int pos = aMatrix.name[0] - 'A';
matrices[pos] = aMatrix;
}
char input[INPUT_LEN];
while (scanf("%s",input) != -1)
{
while ( ! stackMatrices.empty())
stackMatrices.pop();
int totalMultiCount = 0;
int isError = 0;
Matrix left, right;
for (int i = 0;i < strlen(input);i ++)
{
if (isalpha(input[i]))
{
aMatrix = matrices[ input[i] - 'A' ];
stackMatrices.push(aMatrix);
continue;
}
if (input[i] == '(')
continue;
right = stackMatrices.top();
stackMatrices.pop();
left = stackMatrices.top();
stackMatrices.pop();
if (left.col != right.row)
{
isError = 1;
break;
}
totalMultiCount += left.row * left.col * right.col;
aMatrix.row = left.row;
aMatrix.col = right.col;
stackMatrices.push(aMatrix);
}
if (isError)
printf("error\n");
else
printf("%d\n",totalMultiCount);
}
return 0;
}