sxhmilyoyo

typedef struct tnode{
    int flag;   //indicate whether the node is a leaf(0: number; 1: variable) or internal node(2: operator)
    char *varname;      //name of the variable
    int val;    //value of the expression tree
    char *op;   //operator branch
    struct tnode *left, *right;     //left and right node
}tnode;

sxhmilyoyo

#include <string.h>
#define TOTAL 50

int yyerror(char const *s);

typedef struct tnode{
    int flag;   //indicate whether the node is a leaf(0: number; 1: variable) or internal node(2: operator)
    // char *varname;      //name of the variable
    // int val;    //value of the expression tree
    struct variable *var;

sxhmilyoyo

struct temp {
  char *name;   //temporary variable name
  int flag;     //indicate whether the variable is free(0: free; 1: used)
} temps[TOTAL];

void inittemps();

struct temp *gettemp();

void freetemp(struct temp *t);

sxhmilyoyo

tnode tnodes[TOTAL];

struct expr{
    int flag;
    char *expr;
}exprstack[TOTAL];

sxhmilyoyo

struct quad{
	int flag;
	struct variable *operation;
	struct variable *arg1;
	struct variable *arg2;
	struct variable *result;
	struct quad *next;
}quads[TOTAL];

// remove the duplicate assignment

sxhmilyoyo

struct variable {
  int used;     // 0: not used; 1: used
  int flag;     // 0: integer; 1: variable; 2: temporary; 3: operator
  char *name;
  int value;
};

struct variable variables[TOTAL];

struct variable temps[TOTAL];

sxhmilyoyo

struct RWTable{
    int flag;               // 0: init; 1: read first
    struct variable *var;
    int read[RWTOTAL];
    int write[RWTOTAL];
    struct RWTable *next;
};

struct dataDependTable{
    int used;

sxhmilyoyo

struct copyStatement{
    int used;
    struct variable *result;
    struct variable *arg;
}copyTable[COPYTABLESTOTAL];

// look up the copyTables
struct copyStatement *lookupCopyTables();

// build copyTables

sxhmilyoyo

1. login server

• ssh username@@montana.dataapplab.com -p 49233
• mkdir .ssh

2. on your computer, open terminal

• check the ~/.ssh exists, if not mkdir ~/.ssh
• generate ssh keys: ssh-keygen -t rsa -f ~/.ssh/id_rsa.dal
• edit config vim .ssh/.config, type:

  Host dal

User bhdshaox

sxhmilyoyo

import sys

def perimeter(rectangles):
    perimeter = 0
    edges = {}
    
    for rect in rectangles:
        x1, y1, x2, y2 = map(int, rect.split())
        perimeter += 2 * (x2 - x1 + y2 - y1)