結果
問題 | No.442 和と積 |
ユーザー | satanic |
提出日時 | 2016-11-11 23:34:20 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3 ms / 1,000 ms |
コード長 | 5,253 bytes |
コンパイル時間 | 1,297 ms |
コンパイル使用メモリ | 130,380 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-04 22:34:48 |
合計ジャッジ時間 | 2,146 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 18 |
コンパイルメッセージ
main.cpp: In function 'bool compGeq(const big&, const big&)': main.cpp:138:1: warning: control reaches end of non-void function [-Wreturn-type] 138 | } | ^
ソースコード
#include <algorithm> #include <bitset> #include <cassert> #include <complex> #include <deque> #include <functional> #include <iomanip> #include <iostream> #include <istream> #include <iterator> #include <limits> #include <list> #include <map> #include <memory> #include <numeric> #include <ostream> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <typeinfo> #include <utility> #include <vector> #include <array> #include <chrono> #include <random> #include <tuple> #include <unordered_map> #include <unordered_set> #include <valarray> #define INIT std::ios::sync_with_stdio(false);std::cin.tie(0); #define VAR(type, ...)type __VA_ARGS__;Scan(__VA_ARGS__); template<typename T> void Scan(T& t) { std::cin >> t; } template<typename First, typename...Rest>void Scan(First& first, Rest&...rest) { std::cin >> first; Scan(rest...); } #define OUT(d) std::cout<<d; #define FOUT(n, d) std::cout<<std::fixed<<std::setprecision(n)<<d; #define SOUT(n, c, d) std::cout<<std::setw(n)<<std::setfill(c)<<d; #define SP std::cout<<" "; #define TAB std::cout<<"\t"; #define BR std::cout<<"\n"; #define ENDL std::cout<<std::endl; #define FLUSH std::cout<<std::flush; #define VEC(type, c, n) std::vector<type> c(n);for(auto& i:c)std::cin>>i; #define MAT(type, c, m, n) std::vector<std::vector<type>> c(m, std::vector<type>(n));for(auto& r:c)for(auto& i:r)std::cin>>i; #define ALL(a) (a).begin(),(a).end() #define FOR(i, a, b) for(int i=(a);i<(b);++i) #define RFOR(i, a, b) for(int i=(b)-1;i>=(a);--i) #define REP(i, n) for(int i=0;i<int(n);++i) #define RREP(i, n) for(int i=(n)-1;i>=0;--i) #define FORLL(i, a, b) for(ll i=ll(a);i<ll(b);++i) #define RFORLL(i, a, b) for(ll i=ll(b)-1;i>=ll(a);--i) #define REPLL(i, n) for(ll i=0;i<ll(n);++i) #define RREPLL(i, n) for(ll i=ll(n)-1;i>=0;--i) #define PAIR std::pair<int, int> #define PAIRLL std::pair<ll, ll> #define IN(a, x, b) (a<=x && x<b) #define SHOW(d) {std::cerr << #d << "\t:" << d << "\t";} #define SHOWVECTOR(v) {std::cerr << #v << "\t:";for(const auto& i : v){std::cerr << i << " ";}std::cerr << "\n";} #define SHOWVECTOR2(v) {std::cerr << #v << "\t:\n";for(const auto& i : v){for(const auto& j : i){std::cerr << j << " ";}std::cerr << "\n";}} #define SHOWPAIRVECTOR2(v) {std::cerr << #v << "\t:\n";for(const auto& i : v){for(const auto& j : i){std::cerr<<'('<<j.first<<", "<<j.second<<") ";}std::cerr << "\n";}} #define SHOWPAIRVECTOR(v) {for(const auto& i:v){std::cerr<<'('<<i.first<<", "<<i.second<<") ";}std::cout<<"\n";} #define CHECKTIME(state) {auto start=std::chrono::system_clock::now();state();auto end=std::chrono::system_clock::now();auto res=std::chrono::duration_cast<std::chrono::nanoseconds>(end-start).count();std::cerr<<"[Time:"<<res<<"ns ("<<res/(1.0e9)<<"s)]\n";} #define SHOWQUEUE(a) {std::queue<decltype(a.front())> tmp(a);std::cerr << #a << "\t:";for(int i=0; i<static_cast<int>(a.size()); ++i){std::cerr << tmp.front() << "\n";tmp.pop();}std::cerr << "\n";} #define CHMAX(a, b) a = (((a)<(b)) ? (b) : (a)) #define CHMIN(a, b) a = (((a)>(b)) ? (b) : (a)) #define EXCEPTION(msg) throw std::string("Exception : " msg " [ in ") + __func__ + " : " + std::to_string(__LINE__) + " lines ]" #define TRY(cond, msg) try {if (cond) EXCEPTION(msg);}catch (std::string s) {std::cerr << s << std::endl;} #define int ll using ll = long long; using ull = unsigned long long; constexpr int INFINT = 1 << 30; // 1.07x10^ 9 constexpr int INFINT_LIM = (1LL << 31) - 1; // 2.15x10^ 9 constexpr ll INFLL = 1LL << 60; // 1.15x10^18 constexpr ll INFLL_LIM = (1LL << 62) - 1 + (1LL << 62); // 9.22x10^19 constexpr double EPS = 1e-9; constexpr int MOD = 1000000007; constexpr double PI = 3.141592653589793238; using big = std::bitset<150>; big toBig(ll n) { big res; REP(i, res.size()) { res[i] = n & 1; n >>= 1; } return res; } ll toNum(big n) { ll res = 0; REP(i, n.size()) { res += n[i] * std::pow(2, i); } return res; } big plus(const big& a, const big& b) { big res; res[0] = a[0] ^ b[0]; res[1] = a[0] & b[0]; FOR(i, 1, a.size()) { if (i != a.size() - 1) res[i + 1] = (a[i] & b[i]) | (b[i] & res[i]) | (res[i] & a[i]); res[i] = res[i] ^ a[i] ^ b[i]; } return res; } big minus(const big& a, big b) { big res; b.flip(); big t; t[0] = 1; b = plus(b, t); // 2の補数 res = plus(a, b); return res; } big mul(const big& a, const big& b) { big res; REP(i, b.size() / 2) { if (b[i]) { big t = a << i; res = plus(res, t); } } return res; } bool compGeq(const big& a, const big& b) { if (a == b) return true; RREP(i, a.size()) { if (a[i] && !b[i]) return true; if (!a[i] && b[i]) return false; } } big mod(const big& a, const big& b) { big n(a), d(b); big m, q; m[0] = 1; while (compGeq(n, d)) { d <<= 1; m <<= 1; } big t; t[0] = 1; while (!compGeq(t, m)) { d >>= 1; m >>= 1; if (compGeq(n, d)) { n = minus(n, d); q |= m; } } return n; } big gcd(big a, big b) { big t; return b == t ? a : gcd(b, mod(a, b)); } signed main() { INIT; VAR(ll, a, b); big A = toBig(a); big B = toBig(b); big s = plus(A, B); big p = mul(A, B); if (compGeq(s, p)) std::swap(s, p); big g = gcd(p, s); OUT(toNum(g))BR; return 0; }