結果
問題 | No.2111 Sum of Diff |
ユーザー |
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提出日時 | 2022-10-28 21:36:25 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 68 ms / 2,000 ms |
コード長 | 5,301 bytes |
コンパイル時間 | 2,043 ms |
コンパイル使用メモリ | 198,132 KB |
最終ジャッジ日時 | 2025-02-08 14:11:20 |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 20 |
ソースコード
#include <bits/stdc++.h>using namespace std;//using namespace atcoder;struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;#define FOR(i, begin, end) for(int i=(begin);i<(end);i++)#define REP(i, n) FOR(i,0,n)#define IFOR(i, begin, end) for(int i=(end)-1;i>=(begin);i--)#define IREP(i, n) IFOR(i,0,n)#define Sort(v) sort(v.begin(), v.end())#define Reverse(v) reverse(v.begin(), v.end())#define all(v) v.begin(),v.end()#define SZ(v) ((int)v.size())#define Lower_bound(v, x) distance(v.begin(), lower_bound(v.begin(), v.end(), x))#define Upper_bound(v, x) distance(v.begin(), upper_bound(v.begin(), v.end(), x))#define chmax(a, b) a = max(a, b)#define chmin(a, b) a = min(a, b)#define bit(n) (1LL<<(n))#define debug(x) cout << #x << "=" << x << endl;#define vdebug(v) { cout << #v << "=" << endl; REP(i_debug, (int)v.size()){ cout << v[i_debug] << ","; } cout << endl; }#define mdebug(m) { cout << #m << "=" << endl; REP(i_debug, (int)m.size()){ REP(j_debug, (int)m[i_debug].size()){ cout << m[i_debug][j_debug] << ",";} cout << endl;} }#define pb push_back#define fi first#define se second#define int long long#define INF 1000000000000000000template<typename T> istream &operator>>(istream &is, vector<T> &v){ for (auto &x : v) is >> x; return is; }template<typename T> ostream &operator<<(ostream &os, vector<T> &v){ for(int i = 0; i < (int)v.size(); i++) { cout << v[i]; if(i != (int)v.size() - 1) cout << endl; }; return os; }template<typename T1, typename T2> ostream &operator<<(ostream &os, pair<T1, T2> p){ cout << '(' << p.first << ',' << p.second << ')'; return os; }template<typename T> void Out(T x) { cout << x << endl; }template<typename T1, typename T2> void chOut(bool f, T1 y, T2 n) { if(f) Out(y); else Out(n); }using vec = vector<int>;using mat = vector<vec>;using Pii = pair<int, int>;using v_bool = vector<bool>;using v_Pii = vector<Pii>;//int dx[4] = {1,0,-1,0};//int dy[4] = {0,1,0,-1};//char d[4] = {'D','R','U','L'};//const int mod = 1000000007;const int mod = 998244353;template<long long MOD>struct ModInt{using ll = long long;ll val;void setval(ll v) { val = v % MOD; };ModInt(): val(0) {}ModInt(ll v) { setval(v); };ModInt operator+(const ModInt &x) const { return ModInt(val + x.val); }ModInt operator-(const ModInt &x) const { return ModInt(val - x.val + MOD); }ModInt operator*(const ModInt &x) const { return ModInt(val * x.val); }ModInt operator/(const ModInt &x) const { return *this * x.inv(); }ModInt operator-() const { return ModInt(MOD - val); }ModInt operator+=(const ModInt &x) { return *this = *this + x; }ModInt operator-=(const ModInt &x) { return *this = *this - x; }ModInt operator*=(const ModInt &x) { return *this = *this * x; }ModInt operator/=(const ModInt &x) { return *this = *this / x; }bool operator==(const ModInt &x) const { return (*this).val == x.val; }friend ostream& operator<<(ostream &os, const ModInt &x) { os << x.val; return os; }friend istream& operator>>(istream &is, ModInt &x) { is >> x.val; x.val = (x.val % MOD + MOD) % MOD; return is; }ModInt pow(ll n) const {ModInt a = 1;if(n == 0) return a;int i0 = 64 - __builtin_clzll(n);for(int i = i0 - 1; i >= 0; i--){a = a * a;if((n >> i) & 1) a *= (*this);}return a;}ModInt inv() const { return this->pow(MOD - 2); }void add_product(ModInt a, ModInt b){(val += a.val * b.val) %= MOD;}void sbt_product(ModInt a, ModInt b){(val -= a.val * b.val) %= MOD;if(val < 0) val += MOD;}};using mint = ModInt<mod>; mint pow(mint x, long long n) { return x.pow(n); }//using mint = double; //for debugusing mvec = vector<mint>;using mmat = vector<mvec>;struct Combination{vector<mint> fact, invfact;Combination(int N){fact = vector<mint>({mint(1)});invfact = vector<mint>({mint(1)});fact_initialize(N);}void fact_initialize(int N){int i0 = fact.size();if(i0 >= N + 1) return;fact.resize(N + 1);invfact.resize(N + 1);for(int i = i0; i <= N; i++) fact[i] = fact[i - 1] * i;invfact[N] = (mint)1 / fact[N];for(int i = N - 1; i >= i0; i--) invfact[i] = invfact[i + 1] * (i + 1);}mint nCr(int n, int r){if(n < 0 || r < 0 || r > n) return mint(0);if((int)fact.size() < n + 1) fact_initialize(n);return fact[n] * invfact[r] * invfact[n - r];}mint nPr(int n, int r){if(n < 0 || r < 0 || r > n) return mint(0);if((int)fact.size() < n + 1) fact_initialize(n);return fact[n] * invfact[n - r];}mint Catalan(int n){if(n < 0) return 0;else if(n == 0) return 1;if((int)fact.size() < 2 * n + 1) fact_initialize(2 * n);return fact[2 * n] * invfact[n + 1] * invfact[n];}};signed main(){int N; cin >> N;vec a(N); cin >> a;mint ans = 0;REP(i, N){ans += (mint)a[i] * (pow((mint)2, N - 1 - i) - 1);ans -= (mint)a[i] * (pow((mint)2, i) - 1);}Out(ans);return 0;}