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  1.     #include <bits/stdc++.h>
  2.     #include <chrono>
  3.     using namespace std;
  4.     using namespace chrono;
  5.     // "AJEET JAIN"----"JAI JINENDRA"  
  6.     /* "णमो अरिहंताणं",
  7.         "णमो सिद्धाणं",
  8.         "णमो आयरियाणं",
  9.         "णमो उवज्झायाणं",
  10.         "णमो लोए सव्वसाहूणं",
  11.         "",
  12.         "एसो पंच नमोक्कारो, सव्व पावप्पणासणो",
  13.         "मंगलाणं च सव्वेसिं, पडमं हवै मंगलं",   */
  14.  
  15.  
  16.     // Aliases to op
  17.     using ll = long long;
  18.     using ull = unsigned long long;
  19.     using ld = double;
  20.     using vll = vector<ll>;
  21.  
  22.  
  23.     // Constants
  24.     constexpr ll INF = 4e18;
  25.     constexpr ld EPS = 1e-9;
  26.     constexpr ll MOD = 1e9 + 7;
  27.  
  28.  
  29.  
  30.     // Macros
  31.     #define F first
  32.     #define S second
  33.     #define all(x) begin(x), end(x)
  34.     #define allr(x) rbegin(x), rend(x)
  35.     #define py cout<<"YES\n";
  36.     #define pn cout<<"NO\n";
  37.     #define forn(i,n) for(int i=0;i<n;i++)
  38.     #define for1(i,n) for(int i=1;i<=n;i++)
  39.  
  40.     // #define insert push_back
  41.     #define pb push_back
  42.     #define MP make_pair
  43.     #define endl '\n'
  44.  
  45.     /*
  46.       remove substring or subarray ---> try to think about sliding w
  47.     
  48.     */                  
  49.  
  50.      /*
  51.       
  52.      Golden Rule
  53.  
  54.      1) problem is easy
  55.      2) proofs is easy
  56.      3) implementation is easy
  57.      
  58.      /*
  59.          ROUGH --
  60.                  
  61.      */
  62.  
  63.     ll ans(ll x){
  64.         ll sum = 0;
  65.         while(x != 0){
  66.            sum += x%10;
  67.            x = x/10;
  68.         }
  69.         return sum;
  70.     }
  71.  
  72.     void AJNJ(){
  73.        ll n;
  74.        cin >> n;
  75.        vector<ll> v(n);
  76.        vector<pair<ll , ll>> digit;
  77.        map<ll , ll> freq;
  78.        for(int i = 0 ; i < n ; i++){
  79.                cin >> v[i];
  80.                digit.push_back({ans(v[i]) , v[i]});
  81.                freq[ans(v[i])]++;
  82.        }
  83.        map<ll , ll>mp;
  84.        for(int i = 0 ; i < digit.size() ; i++){
  85.                mp[digit[i].F] = max(digit[i].S , mp[digit[i].F]);
  86.        }
  87.        ll ans = INT_MIN;
  88.        for(int i = 0 ; i < digit.size() ; i++){
  89.             if(freq[digit[i].F] > 1){
  90.                 ans = max(ans , mp[digit[i].F]);
  91.             }
  92.        }
  93.  
  94.        cout << ans << endl;    /// T.C = O(10*N)
  95.  
  96.     }
  97.  
  98.  
  99.     int main(){
  100.         ios::sync_with_stdio(0);
  101.         cin.tie(0);
  102.         cout.tie(0);
  103.         int T = 1;
  104.         cin>>T;
  105.         auto start1 = high_resolution_clock::now();
  106.         while(T--){
  107.             AJNJ();
  108.         }
  109.         auto stop1 = high_resolution_clock::now();
  110.         auto duration = duration_cast<microseconds>(stop1 - start1);
  111.         cerr << "Time: " << duration . count() / 1000 << " ms" << endl;
  112.  
  113.         return 0;
  114.     }
Success #stdin #stdout #stderr 0.01s 5320KB
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Standard input is empty
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-2147483648
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Time: 0 ms
https://ideone.com/TveVRb
language:
C++14 (clang 8.0)
created:
19 hours ago
visibility:
public

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