Submission #499080

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
499080	2021-12-27 08:00:58	ismoilov	Bigger segments (IZhO19_segments)	C++14	100 / 100	78 ms	18916 KiB

segments

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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define IOS ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define fp(a,i,c) for(int (a) = (i); (a) < (c); (a)++)
#define fpp(a,i,c) for(int (a) = (i); (a) <= (c); (a)++)
#define fm(a,i,c) for(int (a) = (i); (a) > (c); (a)--)
#define fmm(a,i,c) for(int (a) = (i); (a) >= (c); (a)--)
void S()
{
  int n;
  cin >> n;
  vector <int> a(n+1);
  fpp(i,1,n)
    cin >> a[i];
  vector <ll> pr(n+2), b(n+2), d(n+2);
  fpp(i,1,n)
    pr[i] = pr[i-1] + a[i];
  fpp(i,1,n){
    b[i] = max(b[i-1], b[i]);
    d[i] = d[b[i]] + 1;
    ll c = 2*pr[i] - pr[b[i]];
    int x = lower_bound(pr.begin()+1, pr.begin()+1+n, c) - pr.begin();
    b[x] = max(b[x], i*1ll);
  }
  cout << d[n];
}
int main()
{
 
 
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Compilation message (stderr)

segments.cpp: In function 'void S()':
segments.cpp:7:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    7 | #define fpp(a,i,c) for(int (a) = (i); (a) <= (c); (a)++)
      |                            ^
segments.cpp:15:2: note: in expansion of macro 'fpp'
   15 |  fpp(i,1,n)
      |  ^~~
segments.cpp:7:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    7 | #define fpp(a,i,c) for(int (a) = (i); (a) <= (c); (a)++)
      |                            ^
segments.cpp:18:2: note: in expansion of macro 'fpp'
   18 |  fpp(i,1,n)
      |  ^~~
segments.cpp:7:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    7 | #define fpp(a,i,c) for(int (a) = (i); (a) <= (c); (a)++)
      |                            ^
segments.cpp:20:2: note: in expansion of macro 'fpp'
   20 |  fpp(i,1,n){
      |  ^~~

• Subtask 1: 13 / 13
• Subtask 2: 14 / 14
• Subtask 3: 10 / 10
• Subtask 4: 36 / 36
• Subtask 5: 27 / 27