Submission #5824096


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#include <stdio.h>
#include <assert.h>
#include <fstream>
#include <iostream>
#include <algorithm>
#include <array>
#include <vector>
#include <queue>
#include <set>
#include <cmath>
#include <iomanip>
//#include <unordered_map>
//#include <unordered_set>
//#include <boost/container/static_vector.hpp>
//#include <boost/unordered_set.hpp>
//#include <boost/unordered_map.hpp>
//#include <unistd.h>

//#include <cv.h>
//#include <highgui.h>
#include <stdlib.h>
#include <string>

std::string A;
int nums[26];

int main(int argc, char **argv) {
    std::cin >> A;

    for (int i = 0; i < A.size(); i++) {
        nums[A[i] - 'a']++;
    }

    long long ret = A.size() * (A.size() - 1) / 2;

    for (int i = 0; i < 26; i++) {
        ret -= nums[i] * (nums[i] - 1) / 2;
    }

    std::cout << ret + 1 << std::endl;

    

    return 0;
}

Submission Info

Submission Time
Task B - Reverse and Compare
User critter
Language C++14 (GCC 5.4.1)
Score 0
Code Size 885 Byte
Status
Exec Time 8 ms
Memory 640 KB

Judge Result

Set Name Score / Max Score Test Cases
Sample 0 / 0 sample_01.txt, sample_02.txt, sample_03.txt
All 0 / 500 sample_01.txt, sample_02.txt, sample_03.txt, sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_16.txt, subtask_1_17.txt
Case Name Status Exec Time Memory
sample_01.txt 1 ms 256 KB
sample_02.txt 1 ms 256 KB
sample_03.txt 1 ms 256 KB
subtask_1_01.txt 1 ms 256 KB
subtask_1_02.txt 8 ms 640 KB
subtask_1_03.txt 1 ms 256 KB
subtask_1_04.txt 1 ms 256 KB
subtask_1_05.txt 1 ms 256 KB
subtask_1_06.txt 1 ms 256 KB
subtask_1_07.txt 2 ms 256 KB
subtask_1_08.txt 8 ms 640 KB
subtask_1_09.txt 8 ms 640 KB
subtask_1_10.txt 8 ms 640 KB
subtask_1_11.txt 8 ms 640 KB
subtask_1_12.txt 8 ms 640 KB
subtask_1_13.txt 8 ms 640 KB
subtask_1_14.txt 8 ms 640 KB
subtask_1_15.txt 8 ms 640 KB
subtask_1_16.txt 8 ms 640 KB
subtask_1_17.txt 8 ms 640 KB