AtCoder Grand Contest 019

Submission #5824096

Source codeソースコード

#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

Task問題 B - Reverse and Compare
User nameユーザ名 moku
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 WA
Score得点 0
Source lengthソースコード長 885 Byte
File nameファイル名
Exec time実行時間 ms
Memory usageメモリ使用量 -

Test case

Set

Set name Score得点 / Max score Cases
Sample - 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

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
sample_01.txt AC 1 ms 256 KB
sample_02.txt AC 1 ms 256 KB
sample_03.txt AC 1 ms 256 KB
subtask_1_01.txt AC 1 ms 256 KB
subtask_1_02.txt WA
subtask_1_03.txt AC 1 ms 256 KB
subtask_1_04.txt AC 1 ms 256 KB
subtask_1_05.txt AC 1 ms 256 KB
subtask_1_06.txt AC 1 ms 256 KB
subtask_1_07.txt AC 2 ms 256 KB
subtask_1_08.txt AC 8 ms 640 KB
subtask_1_09.txt WA
subtask_1_10.txt WA
subtask_1_11.txt AC 8 ms 640 KB
subtask_1_12.txt WA
subtask_1_13.txt WA
subtask_1_14.txt WA
subtask_1_15.txt WA
subtask_1_16.txt WA
subtask_1_17.txt AC 8 ms 640 KB