Osajono

input/code.cpp: In function 'int main()':
input/code.cpp:3:125: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 int main(){std::cin.sync_with_stdio(false);std::string s;std::cin>>s;long long m[26],k=0,i;for(i=0;i<26;i++)m[i]=0;for(i=0;i<s.length();i++)k+=++m[s[i]-'A'];std::cout<<k<<std::endl;}
                                                                                                                             ^

#include <iostream>
#include <string>
int main(){std::cin.sync_with_stdio(false);std::string s;std::cin>>s;long long m[26],k=0,i;for(i=0;i<26;i++)m[i]=0;for(i=0;i<s.length();i++)k+=++m[s[i]-'A'];std::cout<<k<<std::endl;}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED