Submission #44718

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
44718	2018-04-05 12:26:19	cheater2k	Swap (BOI16_swap)	C++14	100 / 100	127 ms	35288 KiB

swap

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#include <bits/stdc++.h>
using namespace std;
const int N = 200005;
const int MAX = 1500005;
const int INF = 1e9;
typedef pair<int, int> ii;
int n, a[N], id;
int at[MAX];
int best[MAX];
map <int, int> mp[N];
int dp(int v, int val) {
  if (val == INF) return v; // empty vector
  if (mp[v].find(val) != mp[v].end()) {
    return at[mp[v][val]];
  }
  mp[v][val] = ++id;
  int curid = id;
  int l = (v * 2 <= n) ? a[v * 2] : INF;
  int r = (v * 2 + 1 <= n) ? a[v * 2 + 1] : INF;
  int w[3] = {val, l, r};
  if (w[0] < min(w[1], w[2])) {
    dp(v << 1, w[1]);
    dp(v << 1 | 1, w[2]);
    return at[curid] = v;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

swap.cpp: In function 'int main()':
swap.cpp:91:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
swap.cpp:93:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", a + i);
   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 27 / 27
• Subtask 4: 20 / 20
• Subtask 5: 32 / 32