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input/code.cpp: In function 'int main()':
input/code.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while (i < a.length()) {
                      ^
input/code.cpp:25:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while (x < input.size()) {
                         ^

#include <iostream>
#include <string>
#include <algorithm>


using namespace std;

int addition(int a) {
	return (a + 1) / 2 * a;
}


int main() {
	int tuloste = 0;
	string a = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
	
	string input;
	cin >> input;
	int i = 0;
	int x = 0;
	int n = 0;
	while (i < a.length()) {
		n = 0;
		x = 0;
		while (x < input.size()) {
			if (a[i] == input[x]) n++; x++;
		}
		tuloste = tuloste + addition(n);
		i++;
	}
	cout << "" << tuloste +1 << "\n";
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 1

Verdict: WRONG ANSWER

Test 3

Group: 1

Verdict: WRONG ANSWER

Test 4

Group: 1

Verdict: WRONG ANSWER

Test 5

Group: 1

Verdict: WRONG ANSWER

Test 6

Group: 2

Verdict: WRONG ANSWER

Test 7

Group: 2

Verdict: WRONG ANSWER

Test 8

Group: 2

Verdict: WRONG ANSWER

Test 9

Group: 2

Verdict: WRONG ANSWER

Test 10

Group: 2

Verdict: WRONG ANSWER

Test 11

Group: 3

Verdict: WRONG ANSWER

Test 12

Group: 3

Verdict: WRONG ANSWER

Test 13

Group: 3

Verdict: WRONG ANSWER

Test 14

Group: 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: WRONG ANSWER