#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
char num[1000010];
int main () {
	int cases, i, l, a, b, x, y;
	__int64 s;
	scanf("%d", &cases);
	while(cases--) {
		scanf("%s", num);
		l = strlen(num);
		a = b = x = y = 0;
		s = 0;
		for(i = 0; i < l; i++) {
			if(num[i] == '5')
				break;
            if(num[i] == '8') {
				b++;
			}
			if(num[i] == '2') {
			    b--;
			}
			if(num[i] == '6') {
			    a++;
			}
			if(num[i] == '4') {
			    a--;
			}
			if(num[i] == '9') {
			    a++;
			    b++;
			}
		    if(num[i] == '7') {
			    a--;
			    b++;
			}
			if(num[i] == '3') {
			    a++;
			    b--;
			}
			if(num[i] == '1') {
			    a--;
			    b--;
			}
			s = s + x * b - a * y;
			x = a;
			y = b;
			//printf("area:%I64d\n", s);
		}
		if(s < 0)
			s = s * -1;
		if(s % 2 == 0)
		    printf("%I64d\n", s / 2);
		else
			printf("%I64d.5\n", s / 2);
	}
	return 0;
}

• Re:求高手帮忙看下代码，不知道哪里没有考虑到，一直是WA，我有用__int64,万分感谢 (1108) wang521 2009-09-30 21:53:30