結果

問題 No.887 Collatz
ユーザー severrabaenseverrabaen
提出日時 2019-09-29 21:57:12
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 1,789 bytes
コンパイル時間 2,093 ms
コンパイル使用メモリ 199,856 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-04-14 07:25:13
合計ジャッジ時間 3,239 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge4
このコードへのチャレンジ
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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 2 ms
6,812 KB
testcase_01 WA -
testcase_02 WA -
testcase_03 AC 1 ms
6,940 KB
testcase_04 WA -
testcase_05 WA -
testcase_06 AC 2 ms
6,944 KB
testcase_07 AC 2 ms
6,944 KB
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 AC 2 ms
6,944 KB
testcase_12 WA -
testcase_13 AC 2 ms
6,940 KB
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 -
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コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:81:17: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized]
   81 |                 ++i;
      |                 ^~~
main.cpp:73:15: note: 'i' was declared here
   73 |         ll n, i, nn;
      |               ^
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc/13.2.0/include/c++/13/istream:41,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/13.2.0/include/c++/13/sstream:40,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/13.2.0/include/c++/13/complex:45,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/13.2.0/include/c++/13/ccomplex:39,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/13.2.0/include/c++/13/x86_64-pc-linux-gnu/bits/stdc++.h:127,
                 from main.cpp:1:
In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]',
    inlined from 'int main()' at main.cpp:84:23:
/home/linuxbrew/.linuxbrew/Cellar/gcc/13.2.0/include/c++/13/ostream:204:25: warning: 'nn' may be used uninitialized [-Wmaybe-uninitialized]
  204 |       { return _M_insert(__n); }
      |                ~~~~~~~~~^~~~~
main.cpp: In function 'int main()':
main.cpp:73:18: note: 'nn' was declared here
   73 |         ll n, i, nn;
      |                  ^~

ソースコード

diff # 

#include "bits/stdc++.h"
using namespace std;
#define Would
#define you
#define all(n)  n.begin(),n.end()
#define rall(n) n.rbegin(),n.rend()
typedef long long ll;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
const double EPS = 1e-10;
const double pi = acos(-1);//3.1415926535897932384626433832795028...
const ll SIZE = 1 << 17;
int dx[] = { 1,0,-1,0 }, dy[] = { 0,1,0,-1 }, alp[30];
ll fac[200005], finv[200005], inv[200005];
vector<ll>dij;
struct edge { ll to, cost; };
vector<vector<edge> >G;

ll mod_pow(ll a, ll b) {
	ll res = 1, mul = a;
	for (int i = 0; i < 31; ++i) {
		if (b >> i & 1) {
			res *= mul;
			res %= MOD;
		}
		mul = (mul * mul) % MOD;
	}
	return res;
}

void addedge(int from, int to, int cost) {
	G[from].push_back({ to,cost });
	G[to].push_back({ from,cost });
}

template<typename T>
vector<T> make_v(size_t a) { return vector<T>(a); }

template<typename T, typename... Ts>
auto make_v(size_t a, Ts... ts) {
	return vector<decltype(make_v<T>(ts...))>(a, make_v<T>(ts...));
}

template<typename T, typename V>
typename enable_if<is_class<T>::value == 0>::type
fill_v(T & t, const V & v) { t = v; }

template<typename T, typename V>
typename enable_if<is_class<T>::value != 0>::type
fill_v(T & t, const V & v) {
	for (auto& e : t) fill_v(e, v);
}

template<typename T>
void outp(vector<T>v) {
	for (int i = 0; i < v.size(); ++i) {
		cout << v[i];
		if (i != v.size() - 1) { cout << " "; }
	}
}

double add(double a, double b) {
	if (abs(a + b) < EPS * (abs(a) + abs(b))) { return 0; }
	return a + b;
}

ll f(ll n) {
	if (n % 2) { return 3 * n + 1; }
	return n / 2;
}

int main() {
	ll n, i, nn;
	bool  bigger;
	cin >> n;
	while (n != 1) {
		bigger = 0;
		if (n % 2) { bigger = 1; }
		n = f(n);
		if (bigger) { nn = n; }
		++i;
	}

	cout << i << endl << nn << endl;
}
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