結果

問題 No.209 Longest Mountain Subsequence
ユーザー Kmcode1
提出日時 2015-05-15 23:31:57
言語 C++11
(gcc 13.3.0)
結果
AC  
実行時間 39 ms / 2,000 ms
コード長 2,415 bytes
コンパイル時間 904 ms
コンパイル使用メモリ 99,236 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-07-06 04:18:29
合計ジャッジ時間 1,356 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
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
other AC * 6
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
main.cpp: In function ‘int main()’:
main.cpp:84:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   84 |         scanf("%d", &t);
      |         ~~~~~^~~~~~~~~~
main.cpp:86:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   86 |                 scanf("%d", &n);
      |                 ~~~~~^~~~~~~~~~
main.cpp:88:30: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   88 |                         scanf("%d", &a[i]);
      |                         ~~~~~^~~~~~~~~~~~~

ソースコード

diff #
プレゼンテーションモードにする

#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<cctype>
#include<cstdlib>
#include<algorithm>
#include<bitset>
#include<vector>
#include<list>
#include<deque>
#include<queue>
#include<map>
#include<set>
#include<stack>
#include<cmath>
#include<sstream>
#include<fstream>
#include<iomanip>
#include<ctime>
#include<complex>
#include<functional>
#include<climits>
#include<cassert>
#include<iterator>
using namespace std;
int t;
int n;
#define MAX 102
int a[MAX];
vector<pair<int, int> > v[MAX]; //cost,go
int use[MAX][MAX];
int dp[MAX][MAX];
int u_s = 0;
int ind;
inline void dfs(int aa, int b){
if (use[aa][b]==u_s){
return;
}
use[aa][b] = u_s;
dp[aa][b] = 0;
if (aa == b){
ind = v[aa].size();
}
else{
int pre = a[b] - a[aa];
ind = lower_bound(v[aa].begin(), v[aa].end(), make_pair(pre, -1)) - v[aa].begin();
}
ind--;
for (int i = ind; i >= 0; i--){
if (use[v[aa][i].second][aa] != u_s){
dfs(v[aa][i].second, aa);
}
dp[aa][b] = max(dp[aa][b], dp[v[aa][i].second][aa]);
}
dp[aa][b]++;
}
int dp2[MAX][MAX];
inline void dfs2(int aa, int b){
if (use[aa][b]==u_s){
return;
}
use[aa][b] = u_s;
dp2[aa][b] = 0;
if (aa == b){
ind = v[aa].size();
}
else{
int pre = a[b] - a[aa];
ind = lower_bound(v[aa].begin(), v[aa].end(), make_pair(pre, -1)) - v[aa].begin();
}
ind--;
for (int i = ind; i >= 0; i--){
if (use[v[aa][i].second][aa] != u_s){
dfs2(v[aa][i].second, aa);
}
dp2[aa][b] = max(dp2[aa][b], dp2[v[aa][i].second][aa]);
}
dp2[aa][b]++;
}
int main(){
scanf("%d", &t);
while (t--){
scanf("%d", &n);
for (int i = 0; i < n; i++){
scanf("%d", &a[i]);
}
for (int i = 0; i < n; i++){
v[i].clear();
}
for (int i = 0; i < n; i++){
for (int j = i + 1; j < n; j++){
if (a[i] > a[j]){
v[i].push_back(make_pair(a[i] - a[j], j));
}
}
}
for (int i = 0; i < n; i++){
sort(v[i].begin(), v[i].end());
}
u_s++;
for (int i = 0; i < n; i++){
dfs2(i, i);
}
for (int i = 0; i < n; i++){
v[i].clear();
}
for (int i = 0; i < n; i++){
for (int j = i - 1; j >= 0; j--){
if (a[i]>a[j]){
v[i].push_back(make_pair(a[i] - a[j], j));
}
}
}
for (int i = 0; i < n; i++){
sort(v[i].begin(), v[i].end());
}
u_s++;
int maxt = 1;
for (int i = 0; i < n; i++){
dfs(i, i);
maxt = max(maxt, dp[i][i] + dp2[i][i] - 1);
}
printf("%d\n", maxt);
}
return 0;
}
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