hdu 2106 decimal system
decimal system
Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 1575 Accepted Submission(s): 892
Problem Description
As
we know , we always use the decimal system in our common life, even
using the computer. If we want to calculate the value that 3 plus 9, we
just import 3 and 9.after calculation of computer, we will get the
result of 12.
But after learning <<The Principle Of Computer>>,we know that the computer will do the calculation as the following steps:
1 computer change the 3 into binary formality like 11;
2 computer change the 9 into binary formality like 1001;
3 computer plus the two number and get the result 1100;
4 computer change the result into decimal formality like 12;
5 computer export the result;
In the computer system there are other formalities to deal with the number such as hexadecimal. Now I will give several number with a kind of change method, for example, if I give you 1011(2), it means 1011 is a number in the binary system, and 123(10) means 123 if a number in the decimal system. Now I will give you some numbers with any kind of system, you guys should tell me the sum of the number in the decimal system.
But after learning <<The Principle Of Computer>>,we know that the computer will do the calculation as the following steps:
1 computer change the 3 into binary formality like 11;
2 computer change the 9 into binary formality like 1001;
3 computer plus the two number and get the result 1100;
4 computer change the result into decimal formality like 12;
5 computer export the result;
In the computer system there are other formalities to deal with the number such as hexadecimal. Now I will give several number with a kind of change method, for example, if I give you 1011(2), it means 1011 is a number in the binary system, and 123(10) means 123 if a number in the decimal system. Now I will give you some numbers with any kind of system, you guys should tell me the sum of the number in the decimal system.
Input
There
will be several cases. The first line of each case contains one
integers N, and N means there will be N numbers to import, then there
will be N numbers at the next N lines, each line contains a number with
such form : X1….Xn.(Y), and 0<=Xi<Y, 1<Y<=10. I promise you
that the sum will not exceed the 100000000, and there will be at most
100 cases and the 0<N<=1000.
Output
There
is only one line output case for each input case, which is the sum of
all the number. The sum must be expressed using the decimal system.
Sample Input
3
1(2)
2(3)
3(4)
4
11(10)
11(2)
11(3)
11(4)
1(2)
2(3)
3(4)
4
11(10)
11(2)
11(3)
11(4)
Sample Output
6
23
23
Source
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int sum;
int pow(int x, int i)
{
if(i == 0)
return 1;
else if(i == 1)
return x;
else
return x * pow(x, i - 1);
}
void fun(int x, int n)
{
int i = 0, p;
while(x) {
p = x % 10;
sum += p * pow(n, i);
x = x / 10;
i++;
}
}
int main( )
{
int N, a,b, i;
//刚开始交的时候,忘记加!= EOF,TLE一次
while(scanf("%d", &N)!=EOF) {
sum = 0;
for(i = 1; i <= N; i++) {
scanf("%d(%d)",&a, &b);
if (b == 10) {
sum += a;
continue;
}
fun(a, b);
}
printf("%d\n",sum);
}
return 0;
}
posted on 2011-08-16 17:54 more think, more gains 阅读(808) 评论(0) 编辑 收藏 举报