結果
問題 | No.1648 Sum of Powers |
ユーザー | siro53 |
提出日時 | 2021-08-13 22:23:08 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,152 bytes |
コンパイル時間 | 2,257 ms |
コンパイル使用メモリ | 206,676 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-10-03 19:57:02 |
合計ジャッジ時間 | 10,199 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 4 ms
6,820 KB |
testcase_01 | AC | 4 ms
6,820 KB |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | WA | - |
testcase_44 | WA | - |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
testcase_48 | AC | 4 ms
6,816 KB |
testcase_49 | WA | - |
testcase_50 | WA | - |
testcase_51 | AC | 4 ms
6,816 KB |
testcase_52 | WA | - |
testcase_53 | WA | - |
testcase_54 | WA | - |
testcase_55 | WA | - |
testcase_56 | WA | - |
testcase_57 | AC | 4 ms
6,816 KB |
コンパイルメッセージ
g.cpp: In function 'int main()': g.cpp:76:29: warning: 'A' is used uninitialized [-Wuninitialized] g.cpp:75:8: note: 'A' was declared here g.cpp:76:20: warning: 'P' is used uninitialized [-Wuninitialized] g.cpp:75:14: note: 'P' was declared here g.cpp:76:15: warning: 'Q' is used uninitialized [-Wuninitialized] g.cpp:75:17: note: 'Q' was declared here g.cpp:77:20: warning: 'B' is used uninitialized [-Wuninitialized] g.cpp:75:11: note: 'B' was declared here
ソースコード
#line 1 "g.cpp" #pragma region Macros #include <bits/stdc++.h> using namespace std; template <class T> inline bool chmax(T &a, T b) { if(a < b) { a = b; return 1; } return 0; } template <class T> inline bool chmin(T &a, T b) { if(a > b) { a = b; return 1; } return 0; } #ifdef DEBUG template <class T, class U> ostream &operator<<(ostream &os, const pair<T, U> &p) { os << '(' << p.first << ',' << p.second << ')'; return os; } template <class T> ostream &operator<<(ostream &os, const vector<T> &v) { os << '{'; for(int i = 0; i < (int)v.size(); i++) { if(i) { os << ','; } os << v[i]; } os << '}'; return os; } void debugg() { cerr << endl; } template <class T, class... Args> void debugg(const T &x, const Args &... args) { cerr << " " << x; debugg(args...); } #define debug(...) \ cerr << __LINE__ << " [" << #__VA_ARGS__ << "]: ", debugg(__VA_ARGS__) #define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif struct Setup { Setup() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } __Setup; using ll = long long; #define ALL(v) (v).begin(), (v).end() #define RALL(v) (v).rbegin(), (v).rend() #define FOR(i, a, b) for(int i = (a); i < int(b); i++) #define REP(i, n) FOR(i, 0, n) const int INF = 1 << 30; const ll LLINF = 1LL << 60; constexpr int MOD = 998244353; const int dx[4] = {1, 0, -1, 0}; const int dy[4] = {0, 1, 0, -1}; void Case(int i) { cout << "Case #" << i << ": "; } int popcount(int x) { return __builtin_popcount(x); } ll popcount(ll x) { return __builtin_popcountll(x); } #pragma endregion Macros #line 1 "/home/siro53/kyo-pro/compro_library/math/pow_mod.hpp" ll pow_mod(ll n, ll k, ll mod) { if(k == 0) { return 1; } else if(k % 2 == 1) { return pow_mod(n, k - 1, mod) * n % mod; } else { ll t = pow_mod(n, k / 2, mod); return t * t % mod; } } #line 1 "/home/siro53/kyo-pro/compro_library/math/BSGS.hpp" // 与えられたx, y, pに対して、x^i=y(mod p)を満たす最小の正の整数iを返す // 存在しない場合は-1 // O(√p log(p)) ll modlog(ll x, ll y, ll p) { ll H = sqrt(p) + 1; pair<ll, ll> baby[H]; for(ll b = 0, xby = y; b < H; b++, xby = (xby * x) % p) { baby[b] = make_pair(xby, b); } sort(baby, baby + H); ll xH = 1; for(int i = 0; i < H; ++i) { xH = (xH * x) % p; } for(ll a = 1, xaH = xH; a <= H; a++, xaH = (xaH * xH) % p) { auto it = lower_bound(baby, baby + H, make_pair(xaH + 1, 0LL)); if(it == baby) { continue; } it--; if(it->first == xaH) { return a * H - it->second; } } return -1; } #line 73 "g.cpp" int main() { ll A, B, P, Q; ll y = (Q - (P * pow_mod(A, MOD-2, MOD) % MOD) + MOD) % MOD; ll res = modlog(B, y, MOD); assert(res != -1); res += 2; cout << res << endl; }