結果
| 問題 |
No.168 ものさし
|
| ユーザー |
Bantako
|
| 提出日時 | 2018-06-20 19:18:06 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,696 bytes |
| コンパイル時間 | 1,753 ms |
| コンパイル使用メモリ | 178,196 KB |
| 実行使用メモリ | 19,932 KB |
| 最終ジャッジ日時 | 2024-06-30 17:26:39 |
| 合計ジャッジ時間 | 3,403 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 18 WA * 1 |
コンパイルメッセージ
main.cpp:45:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
45 | main(){
| ^~~~
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/x86_64-pc-linux-gnu/bits/stdc++.h:41,
from main.cpp:1:
In function 'constexpr typename __gnu_cxx::__enable_if<std::__is_integer<_Tp>::__value, double>::__type std::sqrt(_Tp) [with _Tp = long long int]',
inlined from 'int main()' at main.cpp:77:19:
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/cmath:476:28: warning: 'maxi' may be used uninitialized [-Wmaybe-uninitialized]
476 | { return __builtin_sqrt(__x); }
| ~~~~~~~~~~~~~~^~~~~
main.cpp: In function 'int main()':
main.cpp:65:8: note: 'maxi' was declared here
65 | ll maxi;
| ^~~~
ソースコード
#include<bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for (int i = int(a); i < int(b); ++i)
typedef long long ll;
typedef pair<int,int> P;
int INF = 1e9;
int MOD = 1e9+7;
const int MAX_N = 100000;
struct UnionFind{
int par[MAX_N];
void init(int n){
for(int i = 0;i < n;i++)par[i] = i;
}
int root(int x){
if(par[x] == x)return x;
else return par[x] = root(par[x]);
}
bool same(int x,int y){
return root(x) == root(y);
}
void unite(int x,int y){
x = root(x);
y = root(y);
if(x == y)return;
par[y] = x;
}
};
ll sqrtll(ll x)
{
ll a = 0, c = 0, y = 0, i = 0, t = x;
while (t >>= 1)
{
++i;
}
for (i += i & 1; i >= 0; i -= 2)
{
c = (y << 1 | 1) <= x >> i;
a = a << 1 | c;
y = y << 1 | c;
x -= c * y << i;
y += c;
}
return a;
}
main(){
int N;
cin >> N;
vector< P > V(N);
vector< pair<ll , P > > dist;
rep(i,0,N){
int a,b;
cin >> a >> b;
V[i] = P(a,b);
}
rep(i,0,N)rep(j,0,N){
if(i == j)continue;
ll dx = V[i].second - V[j].second;
ll dy = V[i].first - V[j].first;
dist.emplace_back(dx*dx + dy*dy, P(i,j));
}
sort(dist.begin(), dist.end());
UnionFind uf;
uf.init(N);
ll maxi;
for(auto p:dist){
auto pi = p.second;
uf.unite(pi.first, pi.second);
if(uf.same(0,N-1)){
maxi = p.first;
break;
}
}
//cout << maxi << endl;
ll num;
for(num = sqrt(maxi);num * num <= maxi;num++){}
num = (num + 9) / 10 * 10;
cout << num << endl;
}
Bantako