結果

問題 No.168 ものさし
ユーザー TamuoTamuoTamuo
提出日時 2019-07-17 17:03:44
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 82 ms / 2,000 ms
コード長 2,359 bytes
コンパイル時間 1,878 ms
コンパイル使用メモリ 175,852 KB
実行使用メモリ 15,844 KB
最終ジャッジ日時 2024-12-22 20:50:12
合計ジャッジ時間 3,456 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 19
権限があれば一括ダウンロードができます
コンパイルメッセージ
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:114:16:
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/cmath:476:28: warning: 'original' may be used uninitialized [-Wmaybe-uninitialized]
  476 |     { return __builtin_sqrt(__x); }
      |              ~~~~~~~~~~~~~~^~~~~
main.cpp: In function 'int main()':
main.cpp:105:8: note: 'original' was declared here
  105 |     ll original;
      |        ^~~~~~~~

ソースコード

diff #
プレゼンテーションモードにする

#include "bits/stdc++.h"
#define REP(i, n, N) for(ll i=(n); i<(N); i++)
#define RREP(i, n, N) for(ll i=(N-1); i>=(n); i--)
#define LREP(lst,itr) for(auto itr = lst.begin(); itr != lst.end(); ++itr)
#define CK(n, a, b) ((a)<=(n)&&(n)<(b))
#define ALL(v) (v).begin(),(v).end()
#define MCP(a, b) memcpy(b,a,sizeof(b))
#define P(s) cout<<(s)<<endl
#define P2(a, b) cout<<(a)<<" "<<(b)<<endl
#define V2(T) vector<vector<T>>
typedef long long ll;
using namespace std;
const ll MOD = 1e9 + 7;
const ll INF = 1e18;
struct point_dist{
ll point1;
ll point2;
ll dist;
};
struct points{
ll x;
ll y;
};
bool cmp(const point_dist& A, const point_dist& B){
return A.dist < B.dist;
}
ll pow(ll A){
return A*A;
}
const int MAX_N = 100010;
struct UnionFind {
int par[MAX_N]; //
int deph[MAX_N]; //
UnionFind(int n) {
fill(par, par + MAX_N, -1);
for (int i = 0; i<n; i++) {
par[i] = i;
deph[i] = 0;
}
}
int find(int x) {
if (par[x] == x) {
return x;
} else {
return par[x] = find(par[x]);
}
}
void unite(int x, int y) {
x = find(x);
y = find(y);
if (x == y) {
/*
// istree = false;
*/
return;
}
if (deph[x] < deph[y]) {
par[x] = par[y];
} else {
par[y] = par[x];
if (deph[x] == deph[y]) deph[x]++;
}
}
bool same(int x, int y) {
return find(x) == find(y);
}
};
int main(){
ll n,x,y;
cin >> n;
vector<points> ps(n+1);
vector<point_dist> pd;
REP(i,1,n+1){
cin >> x >> y;
ps[i].x=x;
ps[i].y=y;
}
REP(i,1,n+1){
REP(j,i+1,n+1){
pd.push_back({i,j,pow(abs(ps[i].x-ps[j].x))+pow(abs(ps[i].y-ps[j].y))});
}
}
/**
for(auto item:pd){
P2(item.point1,item.point2);
}
**/
sort(pd.begin(),pd.end(),cmp);
UnionFind uf(n);
ll original;
for(auto item : pd){
uf.unite(item.point1,item.point2);
if(uf.same(1,n)){
original = item.dist;
break;
}
}
ll d = sqrt(original);
while(original > d * d) d++;
d = (d + 9LL) / 10LL * 10LL;
cout << d << endl;
/**
if(original%100==0){
P(((ll)sqrt(original)/10)*10);
}else{
P(((ll)sqrt(original)/10)*10+10);
}
**/
}
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