結果

問題 No.2260 Adic Sum
ユーザー bit_kyopro
提出日時 2023-04-07 22:12:01
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 798 ms / 2,000 ms
コード長 1,791 bytes
コンパイル時間 4,666 ms
コンパイル使用メモリ 266,592 KB
最終ジャッジ日時 2025-02-12 01:32:36
ジャッジサーバーID
(参考情報)
judge5 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 33
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include<bits/stdc++.h>
#include<atcoder/all>
using namespace atcoder;
//using mint = modint1000000007;
using mint = modint998244353;
//g++ -I/opt/ac-library ./**.cpp
using namespace std;
using ll = long long;
using ull = unsigned long long;
//const long long MOD = 1000000007;
const long long MOD = 998244353;
const long double PI = 3.14159265358979;
const long long INF = 1LL<<60;
template <typename T> bool chmax(T &a, const T& b){if(a < b){a = b;return true;}return false;}
template <typename T> bool chmin(T &a, const T& b){if(a > b){a = b;return true;}return false;}
#define deb(var) do{cout << #var << " : "; view(var);}while(0)
template<typename T> void view(T e){cout << e << endl;}
void view(vector<string>& v){cout << endl;for(auto& s :v){view(s);}cout << endl;}
template<typename T> void view(vector<T>& v){for(auto& e :v){cout << e << " ";}cout << endl;}
template<typename T> void view(vector<vector<T>>& vv){cout << endl;for(auto& v:vv){view(v);}}
ll gcd(ll a, ll b){if (b == 0) return a;else return gcd(b, a % b);}
ll lcm(ll x,ll y){return ll(x/gcd(x,y))*y;}
template<typename T> using min_priority_queue = priority_queue<T, vector<T>, greater<T>>;
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define int long long
int32_t main() {
int n, p; cin >> n >> p;
vector<int> a(n);
map<int, vector<int>> mp;
for (int i=0; i<n; i++) {
cin >> a[i];
mp[a[i]%p].push_back(a[i]);
}
int ans = 0;
for (auto [_, v]: mp) {
sort(all(v));
int m = v.size();
int P = p;
while (P < 2000000000) {
map<int, int> MP;
for (auto x: v) {
ans += MP[x%P];
MP[x%P]++;
}
P *= p;
}
}
cout << ans << "\n";
}
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