#include <bits/stdc++.h>
#define int long long
#define ii pair<int, int>
#define iii pair<int,ii>
#define vii vector<ii>
#define fi first
#define se second
#define endl '\n'
#define show(T) {for (auto x:T) cout<<x<<' ';cout<<endl;}
using namespace std;
const double eps = 0.0000001;
const int mod = 1e9+7;
const int N = 500005;
const int MATRIX_SIZE = 64;
int n,st[4*N],mcd[N],sum[N],dp[N];
void up(int id,int l,int r,int pos,int val){
if (l>pos||r<pos) return;
if (l==r){
st[id]=val;
return;
}
int mid=(l+r)>>1;
up(id<<1,l,mid,pos,val);
up(id<<1|1,mid+1,r,pos,val);
st[id]=min(st[id<<1],st[id<<1|1]);
}
int get(int id,int l,int r,int ct,int cp,int val){
if (l>cp||r<ct||st[id]>val) return 1e18;
if (l==r){
if (st[id]<=val) return l;
return 1e18;
}
int mid=(l+r)>>1;
int tam=get(id<<1|1,mid+1,r,ct,cp,val);
if (tam==1e18)
tam=get(id<<1,l,mid,ct,cp,val);
return tam;
}
void solve(){
cin>>n;
for (int i=1,tam,pos;i<=n;++i){
cin>>tam;
mcd[i]=mcd[i-1]+tam;
pos=get(1,1,n,1,i-1,mcd[i]);
if (pos==1e18) pos=0;
sum[i]=mcd[i]-mcd[pos];
dp[i]=dp[pos]+1;
// cout<<i<<' '<<pos<<endl;
up(1,1,n,i,sum[i]+mcd[i]);
}
cout<<dp[n];
}
main() {
// freopen("ok.inp","r",stdin);
// freopen("ok.out","w",stdout);
ios_base::sync_with_stdio(0);
cin.tie(0);
solve();
// cout<<clock()/1000.0;
}
Compilation message
segments.cpp:53:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
53 | main() {
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4444 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
2 ms |
4444 KB |
Output is correct |
8 |
Correct |
1 ms |
4444 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
1 ms |
4440 KB |
Output is correct |
12 |
Correct |
1 ms |
4444 KB |
Output is correct |
13 |
Correct |
1 ms |
4444 KB |
Output is correct |
14 |
Correct |
1 ms |
4444 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4444 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
2 ms |
4444 KB |
Output is correct |
8 |
Correct |
1 ms |
4444 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
1 ms |
4440 KB |
Output is correct |
12 |
Correct |
1 ms |
4444 KB |
Output is correct |
13 |
Correct |
1 ms |
4444 KB |
Output is correct |
14 |
Correct |
1 ms |
4444 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
4444 KB |
Output is correct |
18 |
Correct |
1 ms |
4444 KB |
Output is correct |
19 |
Correct |
1 ms |
4440 KB |
Output is correct |
20 |
Correct |
1 ms |
4440 KB |
Output is correct |
21 |
Correct |
1 ms |
4444 KB |
Output is correct |
22 |
Correct |
1 ms |
4444 KB |
Output is correct |
23 |
Correct |
1 ms |
4444 KB |
Output is correct |
24 |
Correct |
1 ms |
4440 KB |
Output is correct |
25 |
Correct |
1 ms |
4440 KB |
Output is correct |
26 |
Correct |
1 ms |
4440 KB |
Output is correct |
27 |
Correct |
1 ms |
4444 KB |
Output is correct |
28 |
Correct |
1 ms |
4444 KB |
Output is correct |
29 |
Correct |
1 ms |
4444 KB |
Output is correct |
30 |
Correct |
1 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4444 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
2 ms |
4444 KB |
Output is correct |
8 |
Correct |
1 ms |
4444 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
1 ms |
4440 KB |
Output is correct |
12 |
Correct |
1 ms |
4444 KB |
Output is correct |
13 |
Correct |
1 ms |
4444 KB |
Output is correct |
14 |
Correct |
1 ms |
4444 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
4444 KB |
Output is correct |
18 |
Correct |
1 ms |
4444 KB |
Output is correct |
19 |
Correct |
1 ms |
4440 KB |
Output is correct |
20 |
Correct |
1 ms |
4440 KB |
Output is correct |
21 |
Correct |
1 ms |
4444 KB |
Output is correct |
22 |
Correct |
1 ms |
4444 KB |
Output is correct |
23 |
Correct |
1 ms |
4444 KB |
Output is correct |
24 |
Correct |
1 ms |
4440 KB |
Output is correct |
25 |
Correct |
1 ms |
4440 KB |
Output is correct |
26 |
Correct |
1 ms |
4440 KB |
Output is correct |
27 |
Correct |
1 ms |
4444 KB |
Output is correct |
28 |
Correct |
1 ms |
4444 KB |
Output is correct |
29 |
Correct |
1 ms |
4444 KB |
Output is correct |
30 |
Correct |
1 ms |
4444 KB |
Output is correct |
31 |
Correct |
1 ms |
4444 KB |
Output is correct |
32 |
Correct |
1 ms |
4444 KB |
Output is correct |
33 |
Correct |
2 ms |
4620 KB |
Output is correct |
34 |
Correct |
2 ms |
4444 KB |
Output is correct |
35 |
Correct |
2 ms |
4444 KB |
Output is correct |
36 |
Correct |
2 ms |
4444 KB |
Output is correct |
37 |
Correct |
1 ms |
4444 KB |
Output is correct |
38 |
Correct |
1 ms |
4444 KB |
Output is correct |
39 |
Correct |
2 ms |
4444 KB |
Output is correct |
40 |
Correct |
2 ms |
4444 KB |
Output is correct |
41 |
Correct |
2 ms |
4444 KB |
Output is correct |
42 |
Correct |
1 ms |
4444 KB |
Output is correct |
43 |
Correct |
2 ms |
4444 KB |
Output is correct |
44 |
Correct |
2 ms |
4444 KB |
Output is correct |
45 |
Correct |
2 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4444 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
2 ms |
4444 KB |
Output is correct |
8 |
Correct |
1 ms |
4444 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
1 ms |
4440 KB |
Output is correct |
12 |
Correct |
1 ms |
4444 KB |
Output is correct |
13 |
Correct |
1 ms |
4444 KB |
Output is correct |
14 |
Correct |
1 ms |
4444 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
4444 KB |
Output is correct |
18 |
Correct |
1 ms |
4444 KB |
Output is correct |
19 |
Correct |
1 ms |
4440 KB |
Output is correct |
20 |
Correct |
1 ms |
4440 KB |
Output is correct |
21 |
Correct |
1 ms |
4444 KB |
Output is correct |
22 |
Correct |
1 ms |
4444 KB |
Output is correct |
23 |
Correct |
1 ms |
4444 KB |
Output is correct |
24 |
Correct |
1 ms |
4440 KB |
Output is correct |
25 |
Correct |
1 ms |
4440 KB |
Output is correct |
26 |
Correct |
1 ms |
4440 KB |
Output is correct |
27 |
Correct |
1 ms |
4444 KB |
Output is correct |
28 |
Correct |
1 ms |
4444 KB |
Output is correct |
29 |
Correct |
1 ms |
4444 KB |
Output is correct |
30 |
Correct |
1 ms |
4444 KB |
Output is correct |
31 |
Correct |
1 ms |
4444 KB |
Output is correct |
32 |
Correct |
1 ms |
4444 KB |
Output is correct |
33 |
Correct |
2 ms |
4620 KB |
Output is correct |
34 |
Correct |
2 ms |
4444 KB |
Output is correct |
35 |
Correct |
2 ms |
4444 KB |
Output is correct |
36 |
Correct |
2 ms |
4444 KB |
Output is correct |
37 |
Correct |
1 ms |
4444 KB |
Output is correct |
38 |
Correct |
1 ms |
4444 KB |
Output is correct |
39 |
Correct |
2 ms |
4444 KB |
Output is correct |
40 |
Correct |
2 ms |
4444 KB |
Output is correct |
41 |
Correct |
2 ms |
4444 KB |
Output is correct |
42 |
Correct |
1 ms |
4444 KB |
Output is correct |
43 |
Correct |
2 ms |
4444 KB |
Output is correct |
44 |
Correct |
2 ms |
4444 KB |
Output is correct |
45 |
Correct |
2 ms |
4444 KB |
Output is correct |
46 |
Correct |
30 ms |
13484 KB |
Output is correct |
47 |
Correct |
36 ms |
13392 KB |
Output is correct |
48 |
Correct |
41 ms |
13400 KB |
Output is correct |
49 |
Correct |
34 ms |
13396 KB |
Output is correct |
50 |
Correct |
32 ms |
13404 KB |
Output is correct |
51 |
Correct |
39 ms |
13488 KB |
Output is correct |
52 |
Correct |
20 ms |
11100 KB |
Output is correct |
53 |
Correct |
12 ms |
7004 KB |
Output is correct |
54 |
Correct |
35 ms |
13272 KB |
Output is correct |
55 |
Correct |
39 ms |
13404 KB |
Output is correct |
56 |
Correct |
30 ms |
13404 KB |
Output is correct |
57 |
Correct |
32 ms |
13392 KB |
Output is correct |
58 |
Correct |
32 ms |
13404 KB |
Output is correct |
59 |
Correct |
31 ms |
13448 KB |
Output is correct |
60 |
Correct |
34 ms |
13416 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4444 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
2 ms |
4444 KB |
Output is correct |
8 |
Correct |
1 ms |
4444 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
4444 KB |
Output is correct |
11 |
Correct |
1 ms |
4440 KB |
Output is correct |
12 |
Correct |
1 ms |
4444 KB |
Output is correct |
13 |
Correct |
1 ms |
4444 KB |
Output is correct |
14 |
Correct |
1 ms |
4444 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
4444 KB |
Output is correct |
18 |
Correct |
1 ms |
4444 KB |
Output is correct |
19 |
Correct |
1 ms |
4440 KB |
Output is correct |
20 |
Correct |
1 ms |
4440 KB |
Output is correct |
21 |
Correct |
1 ms |
4444 KB |
Output is correct |
22 |
Correct |
1 ms |
4444 KB |
Output is correct |
23 |
Correct |
1 ms |
4444 KB |
Output is correct |
24 |
Correct |
1 ms |
4440 KB |
Output is correct |
25 |
Correct |
1 ms |
4440 KB |
Output is correct |
26 |
Correct |
1 ms |
4440 KB |
Output is correct |
27 |
Correct |
1 ms |
4444 KB |
Output is correct |
28 |
Correct |
1 ms |
4444 KB |
Output is correct |
29 |
Correct |
1 ms |
4444 KB |
Output is correct |
30 |
Correct |
1 ms |
4444 KB |
Output is correct |
31 |
Correct |
1 ms |
4444 KB |
Output is correct |
32 |
Correct |
1 ms |
4444 KB |
Output is correct |
33 |
Correct |
2 ms |
4620 KB |
Output is correct |
34 |
Correct |
2 ms |
4444 KB |
Output is correct |
35 |
Correct |
2 ms |
4444 KB |
Output is correct |
36 |
Correct |
2 ms |
4444 KB |
Output is correct |
37 |
Correct |
1 ms |
4444 KB |
Output is correct |
38 |
Correct |
1 ms |
4444 KB |
Output is correct |
39 |
Correct |
2 ms |
4444 KB |
Output is correct |
40 |
Correct |
2 ms |
4444 KB |
Output is correct |
41 |
Correct |
2 ms |
4444 KB |
Output is correct |
42 |
Correct |
1 ms |
4444 KB |
Output is correct |
43 |
Correct |
2 ms |
4444 KB |
Output is correct |
44 |
Correct |
2 ms |
4444 KB |
Output is correct |
45 |
Correct |
2 ms |
4444 KB |
Output is correct |
46 |
Correct |
30 ms |
13484 KB |
Output is correct |
47 |
Correct |
36 ms |
13392 KB |
Output is correct |
48 |
Correct |
41 ms |
13400 KB |
Output is correct |
49 |
Correct |
34 ms |
13396 KB |
Output is correct |
50 |
Correct |
32 ms |
13404 KB |
Output is correct |
51 |
Correct |
39 ms |
13488 KB |
Output is correct |
52 |
Correct |
20 ms |
11100 KB |
Output is correct |
53 |
Correct |
12 ms |
7004 KB |
Output is correct |
54 |
Correct |
35 ms |
13272 KB |
Output is correct |
55 |
Correct |
39 ms |
13404 KB |
Output is correct |
56 |
Correct |
30 ms |
13404 KB |
Output is correct |
57 |
Correct |
32 ms |
13392 KB |
Output is correct |
58 |
Correct |
32 ms |
13404 KB |
Output is correct |
59 |
Correct |
31 ms |
13448 KB |
Output is correct |
60 |
Correct |
34 ms |
13416 KB |
Output is correct |
61 |
Correct |
153 ms |
21072 KB |
Output is correct |
62 |
Correct |
175 ms |
20944 KB |
Output is correct |
63 |
Correct |
196 ms |
21344 KB |
Output is correct |
64 |
Correct |
190 ms |
21076 KB |
Output is correct |
65 |
Correct |
173 ms |
21072 KB |
Output is correct |
66 |
Correct |
204 ms |
20908 KB |
Output is correct |
67 |
Correct |
159 ms |
20176 KB |
Output is correct |
68 |
Correct |
76 ms |
15444 KB |
Output is correct |
69 |
Correct |
185 ms |
21076 KB |
Output is correct |
70 |
Correct |
201 ms |
21060 KB |
Output is correct |
71 |
Correct |
154 ms |
20928 KB |
Output is correct |
72 |
Correct |
168 ms |
20936 KB |
Output is correct |
73 |
Correct |
183 ms |
21072 KB |
Output is correct |
74 |
Correct |
161 ms |
20936 KB |
Output is correct |
75 |
Correct |
169 ms |
20912 KB |
Output is correct |