Private test cases are not passing. What is the mistake here? [closed] - c++

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Given N three-digit numbers, your task is to find bit score of all N numbers and then print the number of pairs possible based on these calculated bit score.
Rule for calculating bit score from three digit number:
From the 3-digit number,
· extract largest digit and multiply by 11 then
· extract smallest digit multiply by 7 then
· add both the result for getting bit pairs.
Note: - Bit score should be of 2-digits, if above results in a 3-digit bit score, simply ignore most significant digit.
Consider following examples:
Say, number is 286
Largest digit is 8 and smallest digit is 2
So, 8*11+2*7 =102 so ignore most significant bit , So bit score = 02.
Say, Number is 123
Largest digit is 3 and smallest digit is 1
So, 3*11+7*1=40, so bit score is 40.
Rules for making pairs from above calculated bit scores
Condition for making pairs are
· Both bit scores should be in either odd position or even position to be eligible to form a pair.
· Pairs can be only made if most significant digit are same and at most two pair can be made for a given significant digit.
Constraints
N<=500
Input Format
First line contains an integer N, denoting the count of numbers.
Second line contains N 3-digit integers delimited by space
Output
One integer value denoting the number of bit pairs.
Test Case
Explanation
Example 1
Input
8 234 567 321 345 123 110 767 111
Output
3
Explanation
After getting the most and least significant digits of the numbers and applying the formula given in Rule 1 we get the bit scores of the numbers as:
58 12 40 76 40 11 19 18
No. of pair possible are 3:
40 appears twice at odd-indices 3 and 5 respectively. Hence, this is one pair.
12, 11, 18 are at even-indices. Hence, two pairs are possible from these three-bit scores.
Hence total pairs possible is 3
#include <iostream>
#include <vector>
using namespace std;
vector<int> correctBitScores(vector<int>);
vector<int> bitScore(vector<int>);
int findPairs(vector<int>);
int main() {
int a, b;
int pairs = 0;
vector<int> vec;
vector<int> bitscore;
cout << "\nEnter count of nos: ";
cin >> a;
for (int i = 0; i < a; i++) {
cin >> b;
vec.push_back(b);
}
bitscore = bitScore(vec);
pairs = findPairs(bitscore);
cout << "Max pairs = " << pairs;
return 0;
}
vector<int> correctBitScores(vector<int> bis) {
int temp = 0;
for (size_t i = 0; i < bis.size(); i++) {
temp = bis[i];
int count = 0;
while (temp > 0) {
temp = temp / 10;
count++;
}
if (count > 2)
bis[i] = abs(100 - bis[i]);
}
/*cout << "\nCorrected" << endl;
for (int i = 0; i < size(bis); i++) {
cout << bis[i] << endl;
}*/
return bis;
}
int findPairs(vector<int> vec) {
int count = 0;
vector<int> odd;
vector<int> even;
for (size_t i = 0; i < vec.size(); i++)
(i % 2 == 0 ? even.push_back(vec[i]) : odd.push_back(vec[i]));
for (size_t j = 0; j < odd.size(); j++)
for (size_t k = j + 1; k < odd.size(); k++) {
if (odd[j] / 10 == odd[k] / 10) {
count++;
odd.erase(odd.begin()+j);
}
}
for (size_t j = 0; j < even.size(); j++)
for (size_t k = j + 1; k < even.size(); k++) {
if (even[j] / 10 == even[k] / 10) {
count++;
even.erase(even.begin() + j);
}
}
return count;
}
vector<int> bitScore(vector<int> v) {
int temp = 0, rem = 0;
vector<int> bs;
for (size_t i = 0; i < v.size(); i++) {
int max = 0, min = 9;
temp = v[i];
while (temp > 0) {
rem = temp % 10;
if (min > rem)
min = rem;
if (max < rem)
max = rem;
temp = temp / 10;
}
int bscore = (max * 11) + (min * 7);
bs.push_back(bscore);
}
/*cout << "\nBit Scores = " << endl;
for (int i = 0; i < size(bs); i++) {
cout << bs[i] << endl;
}*/
bs = correctBitScores(bs);
return bs;
}

Answer 1

I tried doing it very simple c++ code as per my understanding of Que,can you just verify it more test cases.
#include <bits/stdc++.h>
using namespace std;
int main() {
int n,count=0;
cin>>n;
vector<int>v(n);
for(int i=0;i<n;i++){
cin>>v[i];
string s = to_string(v[i]);
sort(s.begin(),s.end());
int temp = (s[s.length()-1]-'0')*11 + (s[0] - '0')*7;
v[i] = temp%100;
}
unordered_map<int ,vector<int>>o,e;
for(int i=0;i<n;i=i+2){
o[v[i]/10].push_back(i+1);
}
for(int i=1;i<n;i=i+2){
e[v[i]/10].push_back(i+1);
}
count=0;
for(int i=0;i<10;i++){
int os=o[i].size(),es=e[i].size();
if(os==2)
count++;
if(es == 2)
count++;
if(os>2 || es>2)
count += 2;
}
cout<<count;
}