#define Abs(a) (a<0)?(-a):(a)

inline int xmult(int x1, int y1, int x2, int y2, int x0, int y0) {
    return (x1 - x0)*(y2 - y0)-(x2 - x0)*(y1 - y0);
}

int cx[] = {0, -1, -1, -1, 0, 0, 0, 1, 1, 1};
int cy[] = {0, -1, 0, 1, -1, 0, 1, -1, 0, 1};

char ch[1000005];

int main() {
    int n, i, T;
    long long s;
    int x = 0, y = 0, xx, yy, xxx, yyy;
    scanf("%d", &T);
    while (T--) {
        s=0;
        scanf("%s", ch);
        int l = strlen(ch) - 1;
        
        xxx = cx[ch[0] - '0'];
        yyy = cy[ch[0] - '0'];

        for (int i = 1; i < l; ++i) {
            xx = xxx;
            yy = yyy;

            xxx += cx[ch[i] - '0'];
            yyy += cy[ch[i] - '0'];

            s += xmult(x, y, xx, yy, xxx, yyy);
        }

        printf((s & 1LL) ? "%lld.5\n" : "%lld\n", Abs(s/2));
    }
    return 0;
}