10499 秘密研究

#include <stdio.h>#include <string.h>#define MAXN 1000int main(){    int i,n;    char s[MAXN][MAXN];    scanf("%d",&n);    for(i = 0;i < n; i++){        scanf("%s",s[i]);    }    for(i = 0;i <n; i++){        if(!strcmp(s[i],"1")||!strcmp(s[i],"4")||!strcmp(s[i],"78")){printf("+\n");continue;}        if(s[i][strlen(s[i])-2]=='3' && s[i][strlen(s[i])-1] == '5') {printf("-\n");continue;}        if(s[i][0] == '9' && s[i][strlen(s[i])-1] == '4') {printf("?\n");continue;}        if(s[i][0] == '1' && s[i][1] == '9' &&s[i][2] == '0') {printf("*\n");continue;}    }    return 0;}