結果
| 問題 | No.363 門松サイクル |
| ユーザー |
 koyumeishi
|
| 提出日時 | 2016-03-16 01:55:18 |
| 言語 | C++11 (gcc 11.4.0) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,288 bytes |
| コンパイル時間 | 976 ms |
| コンパイル使用メモリ | 102,984 KB |
| 実行使用メモリ | 14,016 KB |
| 最終ジャッジ日時 | 2024-04-09 19:55:46 |
| 合計ジャッジ時間 | 7,002 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge4 |
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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 | 1 ms
6,812 KB |
| testcase_01 | AC | 1 ms
6,944 KB |
| testcase_02 | AC | 6 ms
6,940 KB |
| testcase_03 | AC | 3 ms
6,940 KB |
| testcase_04 | AC | 4 ms
6,944 KB |
| testcase_05 | AC | 3 ms
6,944 KB |
| testcase_06 | AC | 6 ms
6,940 KB |
| testcase_07 | AC | 4 ms
6,940 KB |
| testcase_08 | AC | 5 ms
6,940 KB |
| testcase_09 | TLE | - |
| testcase_10 | -- | - |
| testcase_11 | -- | - |
| testcase_12 | -- | - |
| testcase_13 | -- | - |
| testcase_14 | -- | - |
| testcase_15 | -- | - |
| testcase_16 | -- | - |
| testcase_17 | -- | - |
| testcase_18 | -- | - |
| testcase_19 | -- | - |
| testcase_20 | -- | - |
| testcase_21 | -- | - |
| testcase_22 | -- | - |
| testcase_23 | -- | - |
| testcase_24 | -- | - |
| testcase_25 | -- | - |
| testcase_26 | -- | - |
| testcase_27 | -- | - |
| testcase_28 | -- | - |
コンパイルメッセージ
main.cpp: In function ‘std::istream& operator>>(std::istream&, std::vector<int>&)’:
main.cpp:19:78: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
19 | istream& operator >> (istream& is, vector<int>& vec){for(int& val: vec) scanf("%d", &val); return is;}
| ~~~~~^~~~~~~~~~~~
main.cpp: In function ‘std::istream& operator>>(std::istream&, std::vector<long long int>&)’:
main.cpp:20:90: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
20 | istream& operator >> (istream& is, vector<long long>& vec){for(long long& val: vec) scanf("%lld",/*"%I64d",*/ &val); return is;}
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
main.cpp: In function ‘std::istream& operator>>(std::istream&, std::vector<double>&)’:
main.cpp:21:84: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
21 | istream& operator >> (istream& is, vector<double>& vec){for(double& val: vec) scanf("%lf", &val); return is;}
| ~~~~~^~~~~~~~~~~~~
main.cpp: In function ‘std::istream& operator>>(std::istream&, std::vector<std::__cxx11::basic_string<char> >&)’:
main.cpp:23:85: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
23 | istream& operator >> (istream& is, vector<string>& vec){for(string& val: vec) {scanf("%s", buff); val=buff;}; return is;}
| ~~~~~^~~~~~~~~~~~
main.cpp: In function ‘int main_()’:
main.cpp:44:46: warning: ignorin
ソースコード
//TLE
#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
#include <chrono>
#include <cassert>
using namespace std;
//input from stdin
istream& operator >> (istream& is, vector<int>& vec){for(int& val: vec) scanf("%d", &val); return is;}
istream& operator >> (istream& is, vector<long long>& vec){for(long long& val: vec) scanf("%lld",/*"%I64d",*/ &val); return is;}
istream& operator >> (istream& is, vector<double>& vec){for(double& val: vec) scanf("%lf", &val); return is;}
char buff[200000];
istream& operator >> (istream& is, vector<string>& vec){for(string& val: vec) {scanf("%s", buff); val=buff;}; return is;}
template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
template<class T> istream& operator , (istream& is, T& val){ return is >> val;}
template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(int i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}
template<class T> ostream& operator , (ostream& os, const T& val){ return os << " " << val;}
template<class T> ostream& operator >> (ostream& os, const T& val){ return os << " " << val;}
bool is_kadomatsu(const vector<int>& v){
if(v.size()!=3) return false;
if(v[0]==v[1] || v[1]==v[2] || v[2]==v[0]) return false;
return (v[0]<v[1] && v[1]>v[2]) || (v[0]>v[1] && v[1]<v[2]);
}
int main_(){
int n;
cin >> n;
vector<int> a(n);
cin >> a;
vector<vector<int>> G(n);
for(int i=0; i<n-1; i++){
int u,v; /*cin >> u,v;*/scanf("%d%d",&u,&v); u--,v--;
G[u].push_back(v);
G[v].push_back(u);
}
vector<int> depth(n, -1);
vector<vector<int>> par(n, vector<int>(20));
function<void(int,int,int)> dfs = [&](int pos, int last, int last2){
depth[pos] = depth[last]+1;
par[pos][0] = last;
for(int next : G[pos]){
if(next == last) continue;
dfs(next, pos, last);
}
};
dfs(0,0,0);
for(int k=1; k<20; k++){
for(int i=0; i<n; i++){
par[i][k] = par[ par[i][k-1] ][k-1];
}
}
auto kth_parent = [&](int pos, int k){
if(k<0) return -1;
for(int i=0; k!=0; k>>=1, i++) if(k&1) pos = par[pos][i];
return pos;
};
auto lca = [&](int x, int y){
if(depth[x] < depth[y]) swap(x,y);
x = kth_parent(x, depth[x] - depth[y]);
if(x==y) return x;
for(int k=19; k>=0; k--){
if(par[x][k] != par[y][k]){
x = par[x][k];
y = par[y][k];
}
}
return par[x][0];
};
int cnt = 0;
int q;
cin >> q;
while(q--){
int u,v; /*cin >> u,v;*/ scanf("%d%d",&u,&v); u--,v--;
assert(u!=v);
int p = lca(u,v);
bool ok = true;
vector<int> x,y;
x.push_back(u);
while(u != p){
u = par[u][0];
x.push_back( u );
}
while(v != p){
y.push_back( v );
v = par[v][0];
}
while(y.size()){
x.push_back( y.back() );
y.pop_back();
}
for(int i=0; i<x.size(); i++){
if(is_kadomatsu( {a[x[i]], a[x[(i+1)%x.size()]], a[x[(i+2)%x.size()]]} ) == false){
ok = false;
break;
}
}
if(ok){ puts("YES"); cnt++;}
else puts("NO");
}
//cerr << cnt << endl;
return 0;
}
int main(){
//auto s = clock();
main_();
//cerr << clock()-s << " [ms] " << endl;
return 0;
}