OJ-Problems-Source/HDOJ/3387_autoAC.cpp

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#include <stdio.h>
#include <string.h>
#define OPER 1
#define NUM 2
#define INF 0x3fffffff
#define null x
#define END -1
#define MUTI 3
int n,T;
char oper_now,oper_last;
char in[1000];
__int64 ans,temp,num_equal;
int num,l;
int isnum(char a)
{
if(a>='0'&& a<='9')
return 1;
else return 0;
}
int findp()
{
if(num==l)return END;
int i,j;
int t=num;
if(in[t]=='='&& in[t+1]=='=')
{
num_equal =0;
while(in[num]=='=')
{
num_equal++;
num++;
}
return MUTI;
}
if(!isnum(in[num]))
{
num++;
return OPER;
}
__int64 tt=0;
int jj=10;
int ttp;
while(isnum(in[num]))
{
if((tt*jj+ (in[num]-'0'))>99999999|| (tt*jj+ (in[num]-'0'))<-99999999)
{
num++;
continue;
}
tt= tt*jj+ (in[num]-'0');
num++;
}
temp= tt;
return NUM;
}
__int64 cal_op()
{
__int64 aaa;
switch(oper_now)
{
case'-':return ans-temp;
case'+':return temp+ans;
case'*':aaa= (__int64)ans*temp;if(aaa>99999999|| aaa<-99999999)return INF;else return ans*temp;
case'/':if(temp!=0)return ans/temp;else return INF;
}
}
void cal()
{
if(in[num-1]!='=')
{
if(temp!=INF&& oper_now!=NULL)
{
ans= cal_op();
temp= INF;
}
else if(oper_now==NULL&& temp!=INF)
{
ans= temp;
temp= INF;
}
oper_last= oper_now;
oper_now= in[num-1];
}
else
{
if(oper_now!=NULL)
if(temp!=INF)
{
ans= cal_op();
temp= INF;
}
else
{
temp= ans;
ans= cal_op();
temp= INF;
}
oper_now= NULL;
}
}
int main()
{
int i,j,t;
int op,pp;
scanf("%d",&T);
getchar();
for(pp=0; pp<T; pp++)
{
num=0;
ans=0;
temp= INF;
oper_now= NULL;
oper_last= NULL;
gets(in);
l= strlen(in);
int ttt;
int error=0;
while(op= findp(),op!=END&& !error)
{
if(ans>99999999|| ans<-99999999)
{
error=1;
goto end;
}
if(op==OPER)
{
cal();
}
else if(op==MUTI)
{
if(oper_now!=NULL)
{
if(temp!=INF)
{
for(i=0;i<num_equal;i++)
{
ans= cal_op();
if(ans>99999999|| ans<-99999999)
{
error=1;
goto end;
}
}
temp= INF;
}
else
{
ttt= ans;
for(i=0;i<num_equal;i++)
{
temp= ttt;
ans= cal_op();
if(ans>99999999|| ans<-99999999)
{
error=1;
goto end;
}
}
temp= INF;
}
}
oper_now= NULL;
}
if(ans>99999999|| ans<-99999999)
{
error=1;
goto end;
}
}
end:;
printf("Case %d: ",pp+1);
if(!error)
printf("%I64d\n",temp==INF?ans:temp);
else printf("ERROR\n");
}
return 0;
}