結果
| 問題 | No.53 悪の漸化式 |
| コンテスト | |
| ユーザー |
fal_rnd
|
| 提出日時 | 2017-01-21 14:57:42 |
| 言語 | C++11 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 5,000 ms |
| コード長 | 429 bytes |
| 記録 | |
| コンパイル時間 | 897 ms |
| コンパイル使用メモリ | 174,084 KB |
| 実行使用メモリ | 6,400 KB |
| 最終ジャッジ日時 | 2026-05-29 06:47:21 |
| 合計ジャッジ時間 | 1,726 ms |
|
ジャッジサーバーID (参考情報) |
judge1_0 / judge3_0 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 20 |
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:10:16: warning: ignoring return value of 'std::basic_ostream<_CharT, _Traits>* std::basic_ios<_CharT, _Traits>::tie() const [with _CharT = char; _Traits = std::char_traits<char>]', declared with attribute 'nodiscard' [-Wunused-result]
10 | cin.tie();
| ~~~~~~~^~
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/ios:48,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/istream:42,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/sstream:42,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/complex:50,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/ccomplex:43,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/x86_64-pc-linux-gnu/bits/stdc++.h:133,
from main.cpp:1:
/home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/basic_ios.h:310:7: note: declared here
310 | tie() const
| ^~~
ソースコード
#include <bits/stdc++.h>
using namespace std;
using ll = long long int;
using ull = unsigned long long int;
const char en ='\n';
const int mod=1000000007;
int main(){
cin.tie();
ios::sync_with_stdio(false);
double dp[100];
dp[0]=4;dp[1]=3;
for(int i=2;i<100;i++){
dp[i]=dp[i-1]*4-dp[i-2]*3+dp[i-1]*0.75;
//cout<<fixed<<dp[i]<<en;
}
int i;cin>>i;
cout<<fixed<<setprecision(10)<<dp[i]<<en;
return 0;
}
fal_rnd