uva 621

#include <cstdio>
#include <cstring>
using namespace std;

int main() {
    int tc;
    char s[2000];

    scanf("%d", &tc);
    while (tc--) {
        scanf("%s", s);

        int len = strlen(s);

        if (strcmp(s, "1") == 0 || strcmp(s, "4") == 0 || strcmp(s, "78") == 0)
            printf("+\n");
        else if (s[len - 1] == '5' && s[len - 2] == '3')
            printf("-\n");
        else if (s[0] == '9' && s[len - 1] == '4')
            printf("*\n");
        else if (s[0] == '1' && s[1] == '9' && s[2] == '0')
            printf("?\n");
        else
            printf("+\n");
    }

    return 0;
}