Submission #1540596
Source Code Expand
#include <bits/stdc++.h> using namespace std; #define LL long long string s; // set<string> st; // void rev(int i, int j){ // for(int l = i, r = j; l < r; l++, r-- ){ // swap(s[l],s[r]); // } // } int num[30]; int main(){ cin>>s; // st.insert(s); int n = s.length(); // for(int i = 0; i < n; i++ ){ // for(int j = i; j < n; j++ ){ // rev(i,j); // if(st.count(s)){ // printf("dup %d %d\n",i,j); // } // st.insert(s); // rev(i,j); // } // } // printf("%ld\n",st.size()); for(char x : s){ num[x-'a']++; } LL ans = (LL)n*(n-1)/2+1; for(int i = 0; i < 26; i++ ){ ans -= (LL)num[i]*(num[i]-1)/2; } cout<<ans<<'\n'; return 0; }
Submission Info
Submission Time | |
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Task | B - Reverse and Compare |
User | sergiovieri |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 717 Byte |
Status | AC |
Exec Time | 8 ms |
Memory | 640 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | ||||
Status |
|
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Set Name | Test Cases |
---|---|
Sample | sample_01.txt, sample_02.txt, sample_03.txt |
All | 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 | 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 | AC | 8 ms | 640 KB |
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 | AC | 7 ms | 640 KB |
subtask_1_10.txt | AC | 7 ms | 640 KB |
subtask_1_11.txt | AC | 8 ms | 640 KB |
subtask_1_12.txt | AC | 8 ms | 640 KB |
subtask_1_13.txt | AC | 8 ms | 640 KB |
subtask_1_14.txt | AC | 8 ms | 640 KB |
subtask_1_15.txt | AC | 8 ms | 640 KB |
subtask_1_16.txt | AC | 8 ms | 640 KB |
subtask_1_17.txt | AC | 8 ms | 640 KB |