UVA 12602 - Nice Licence Plates

 #include <iostream>
 #include <cstdio>
 #include <vector>
 #include <string>
 #include <sstream>
 #include <algorithm>
 #include <bitset>
 #define MAX 1000000
 using namespace std;
 
 int main(int argc, char *argv[]){
   string line, subline;
   int t;
   cin >> t;
   getline(cin, line); // read new line
   while (t--){
       getline(cin, line);
       int sum=0;
       int number=0;
       for (int i=0; i<3; ++i){
         sum = sum*26+(line[i]-'A');
       }
       subline = line.substr(4,4);
       stringstream ss;
       ss << subline;
       ss >> number;
       if (abs(number-sum)<=100){
         puts("nice");
       } else {
         puts("not nice");
       }
   }
   return 0;
}