Submission #20962

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
20962	2017-03-23 05:54:05	kdh9949	Rope (JOI17_rope)	C++14	100 / 100	1816 ms	135280 KiB

rope

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#include <bits/stdc++.h>
using namespace std;
const int sz = 1048576;
struct Seg{
  int dat[2 * sz];
  void upd(int x, int v){
    x += sz - 1; dat[x] += v;
    for(x /= 2; x; x /= 2) dat[x] = max(dat[2 * x], dat[2 * x + 1]);
  }
  int get(){ return dat[1]; }
} S;
int n, m, a[1000010], b[1000010][2], c[1000010];
vector<int> d[1000010][2];
int main(){
  scanf("%d%d", &n, &m);
  for(int i = 1; i <= n; i++) scanf("%d", a + i);
  for(int i = 1; i <= n; i++){
    for(int j = 0; j < 2; j++){
      int nx = i + 1 - (i + j) % 2 * 2;
      if(a[nx] && a[nx] != a[i]) d[a[i]][j].push_back(a[nx]);
    }
    S.upd(a[i], 1);
    c[a[i]]++;
  }
  for(int i = 1; i <= m; i++){
    S.upd(i, -c[i]);
    int ans = n;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

rope.cpp: In function 'int main()':
rope.cpp:18:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
                       ^
rope.cpp:19:48: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1; i <= n; i++) scanf("%d", a + i);
                                                ^

• Subtask 1: 15 / 15
• Subtask 2: 30 / 30
• Subtask 3: 10 / 10
• Subtask 4: 25 / 25
• Subtask 5: 20 / 20