#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
struct Point
{
long long x, y, val, nom;
Point() {}
Point(long long a, long long b, long long c, long long d)
{
x=a;
y=b;
val=c;
nom=d;
}
};
bool operator<(Point p, Point q)
{
if(p.x==q.x) return p.y>q.y;
return p.x<q.x;
}
struct Line
{
Point a, b;
Line() {}
Line(Point p, Point q)
{
a.x=p.x;
a.y=p.y;
a.val=p.val;
a.nom=p.nom;
b.x=q.x;
b.y=q.y;
b.val=q.val;
b.nom=q.nom;
}
};
bool cmp(Line p, Line q)
{
if(p.a.x==p.b.x && q.a.x==q.b.x) return (p.b.y-p.a.y) > (q.b.y-q.a.y);
if(p.a.x==p.b.x) return 1;
if(q.a.x==q.b.x) return 0;
return ((p.b.y-p.a.y) * (q.b.x-q.a.x)) < ((q.b.y-q.a.y) * (p.b.x-p.a.x));
}
bool operator==(Line p, Line q)
{
return ((p.b.y-p.a.y) * (q.b.x-q.a.x)) == ((q.b.y-q.a.y) * (p.b.x-p.a.x));
}
long long n, brl=0;
long long pos[2005];
Point P[2005];
vector<Line> L;
long long ans=0;
long long A[2005];
void solve()
{
long long res=0;
for(long long i=0; i<n; i++)
{
res+=A[i];
if(res<0) res=0;
if(res>ans) ans=res;
}
}
long long sum[8005], pref[8005], suf[8005], mx[8005];
void update(int v, int le, int ri, int id, long long val)
{
//cout<<v<<' '<<le<<" "<<ri<<endl;
if(le==ri)
{
sum[v]=val;
pref[v]=max(sum[v], 0LL);
suf[v]=max(sum[v], 0LL);
mx[v]=max(sum[v], 0LL);
return;
}
int mid=(le+ri)/2;
if(id<=mid) update(2*v, le, mid, id, val);
else update(2*v+1, mid+1, ri, id, val);
sum[v]=sum[2*v]+sum[2*v+1];
pref[v]=max(pref[2*v], sum[2*v]+pref[2*v+1]);
suf[v]=max(suf[2*v+1], suf[2*v]+sum[2*v+1]);
mx[v]=max(max(mx[2*v], mx[2*v+1]), suf[2*v]+pref[2*v+1]);
}
int main()
{
// ios::sync_with_stdio(0);
// cin.tie(0);
// cout.tie(0);
cin>>n;
for(long long i=0; i<n; i++) cin>>P[i].x>>P[i].y>>P[i].val;
sort(P, P+n);
for(long long i=0; i<n; i++) P[i].nom=i;
for(long long i=0; i<n; i++)
{
A[i]=P[i].val;
pos[i]=i;
for(long long j=i+1; j<n; j++)
{
L.push_back(Line(P[i], P[j]));
///cout<<L[brl].a.x<<" "<<L[brl].a.y<<" "<<L[brl].b.x<<" "<<L[brl].b.y<<"\n";
brl++;
}
}
///cout<<brl<<endl;
sort(L.begin(), L.end(), cmp);
for(int i=0; i<n; i++)
{
update(1, 0, n-1, i, A[i]);
}
for(long long i=0; i<brl; i++)
{
/// cout<<L[i].a.x<<" "<<L[i].a.y<<" "<<L[i].b.x<<" "<<L[i].b.y<<endl;
if(i==0 || !(L[i]==L[i-1])) ans=max(ans, mx[1]); ///cout<<i<<endl;}
Point t1=L[i].a, t2=L[i].b;
update(1, 0, n-1, pos[t2.nom], A[pos[t1.nom]]);
update(1, 0, n-1, pos[t1.nom], A[pos[t2.nom]]);
swap(A[pos[t1.nom]], A[pos[t2.nom]]);
swap(pos[t1.nom], pos[t2.nom]);
}
ans=max(ans, mx[1]);
cout<<ans<<endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
984 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
984 KB |
Output is correct |
2 |
Correct |
2 ms |
1084 KB |
Output is correct |
3 |
Correct |
2 ms |
1084 KB |
Output is correct |
4 |
Correct |
3 ms |
984 KB |
Output is correct |
5 |
Correct |
2 ms |
1084 KB |
Output is correct |
6 |
Correct |
2 ms |
1036 KB |
Output is correct |
7 |
Correct |
3 ms |
984 KB |
Output is correct |
8 |
Correct |
3 ms |
1076 KB |
Output is correct |
9 |
Correct |
2 ms |
984 KB |
Output is correct |
10 |
Correct |
2 ms |
984 KB |
Output is correct |
11 |
Correct |
0 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
2 ms |
984 KB |
Output is correct |
22 |
Correct |
3 ms |
980 KB |
Output is correct |
23 |
Correct |
3 ms |
984 KB |
Output is correct |
24 |
Correct |
3 ms |
984 KB |
Output is correct |
25 |
Correct |
2 ms |
984 KB |
Output is correct |
26 |
Correct |
3 ms |
984 KB |
Output is correct |
27 |
Correct |
2 ms |
984 KB |
Output is correct |
28 |
Correct |
3 ms |
984 KB |
Output is correct |
29 |
Correct |
3 ms |
984 KB |
Output is correct |
30 |
Correct |
3 ms |
980 KB |
Output is correct |
31 |
Correct |
3 ms |
984 KB |
Output is correct |
32 |
Correct |
2 ms |
984 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
984 KB |
Output is correct |
2 |
Correct |
2 ms |
1084 KB |
Output is correct |
3 |
Correct |
2 ms |
1084 KB |
Output is correct |
4 |
Correct |
3 ms |
984 KB |
Output is correct |
5 |
Correct |
2 ms |
1084 KB |
Output is correct |
6 |
Correct |
2 ms |
1036 KB |
Output is correct |
7 |
Correct |
3 ms |
984 KB |
Output is correct |
8 |
Correct |
3 ms |
1076 KB |
Output is correct |
9 |
Correct |
2 ms |
984 KB |
Output is correct |
10 |
Correct |
2 ms |
984 KB |
Output is correct |
11 |
Correct |
0 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
2 ms |
984 KB |
Output is correct |
22 |
Correct |
3 ms |
980 KB |
Output is correct |
23 |
Correct |
3 ms |
984 KB |
Output is correct |
24 |
Correct |
3 ms |
984 KB |
Output is correct |
25 |
Correct |
2 ms |
984 KB |
Output is correct |
26 |
Correct |
3 ms |
984 KB |
Output is correct |
27 |
Correct |
2 ms |
984 KB |
Output is correct |
28 |
Correct |
3 ms |
984 KB |
Output is correct |
29 |
Correct |
3 ms |
984 KB |
Output is correct |
30 |
Correct |
3 ms |
980 KB |
Output is correct |
31 |
Correct |
3 ms |
984 KB |
Output is correct |
32 |
Correct |
2 ms |
984 KB |
Output is correct |
33 |
Correct |
1237 ms |
131956 KB |
Output is correct |
34 |
Correct |
1289 ms |
131976 KB |
Output is correct |
35 |
Correct |
1205 ms |
131892 KB |
Output is correct |
36 |
Correct |
1225 ms |
131884 KB |
Output is correct |
37 |
Correct |
1196 ms |
131884 KB |
Output is correct |
38 |
Correct |
1167 ms |
131888 KB |
Output is correct |
39 |
Correct |
1144 ms |
131884 KB |
Output is correct |
40 |
Correct |
1152 ms |
131884 KB |
Output is correct |
41 |
Correct |
1171 ms |
131892 KB |
Output is correct |
42 |
Correct |
1145 ms |
131884 KB |
Output is correct |
43 |
Correct |
1178 ms |
131884 KB |
Output is correct |
44 |
Correct |
1137 ms |
131800 KB |
Output is correct |
45 |
Correct |
1178 ms |
131952 KB |
Output is correct |
46 |
Correct |
1164 ms |
132012 KB |
Output is correct |
47 |
Correct |
1161 ms |
131888 KB |
Output is correct |
48 |
Correct |
1176 ms |
131824 KB |
Output is correct |
49 |
Correct |
1178 ms |
131884 KB |
Output is correct |
50 |
Correct |
1220 ms |
131884 KB |
Output is correct |
51 |
Correct |
1157 ms |
131888 KB |
Output is correct |
52 |
Correct |
1209 ms |
131884 KB |
Output is correct |
53 |
Correct |
1144 ms |
131888 KB |
Output is correct |
54 |
Correct |
1167 ms |
131888 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
984 KB |
Output is correct |
2 |
Correct |
2 ms |
1084 KB |
Output is correct |
3 |
Correct |
2 ms |
1084 KB |
Output is correct |
4 |
Correct |
3 ms |
984 KB |
Output is correct |
5 |
Correct |
2 ms |
1084 KB |
Output is correct |
6 |
Correct |
2 ms |
1036 KB |
Output is correct |
7 |
Correct |
3 ms |
984 KB |
Output is correct |
8 |
Correct |
3 ms |
1076 KB |
Output is correct |
9 |
Correct |
2 ms |
984 KB |
Output is correct |
10 |
Correct |
2 ms |
984 KB |
Output is correct |
11 |
Correct |
0 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
2 ms |
984 KB |
Output is correct |
22 |
Correct |
3 ms |
980 KB |
Output is correct |
23 |
Correct |
3 ms |
984 KB |
Output is correct |
24 |
Correct |
3 ms |
984 KB |
Output is correct |
25 |
Correct |
2 ms |
984 KB |
Output is correct |
26 |
Correct |
3 ms |
984 KB |
Output is correct |
27 |
Correct |
2 ms |
984 KB |
Output is correct |
28 |
Correct |
3 ms |
984 KB |
Output is correct |
29 |
Correct |
3 ms |
984 KB |
Output is correct |
30 |
Correct |
3 ms |
980 KB |
Output is correct |
31 |
Correct |
3 ms |
984 KB |
Output is correct |
32 |
Correct |
2 ms |
984 KB |
Output is correct |
33 |
Correct |
1237 ms |
131956 KB |
Output is correct |
34 |
Correct |
1289 ms |
131976 KB |
Output is correct |
35 |
Correct |
1205 ms |
131892 KB |
Output is correct |
36 |
Correct |
1225 ms |
131884 KB |
Output is correct |
37 |
Correct |
1196 ms |
131884 KB |
Output is correct |
38 |
Correct |
1167 ms |
131888 KB |
Output is correct |
39 |
Correct |
1144 ms |
131884 KB |
Output is correct |
40 |
Correct |
1152 ms |
131884 KB |
Output is correct |
41 |
Correct |
1171 ms |
131892 KB |
Output is correct |
42 |
Correct |
1145 ms |
131884 KB |
Output is correct |
43 |
Correct |
1178 ms |
131884 KB |
Output is correct |
44 |
Correct |
1137 ms |
131800 KB |
Output is correct |
45 |
Correct |
1178 ms |
131952 KB |
Output is correct |
46 |
Correct |
1164 ms |
132012 KB |
Output is correct |
47 |
Correct |
1161 ms |
131888 KB |
Output is correct |
48 |
Correct |
1176 ms |
131824 KB |
Output is correct |
49 |
Correct |
1178 ms |
131884 KB |
Output is correct |
50 |
Correct |
1220 ms |
131884 KB |
Output is correct |
51 |
Correct |
1157 ms |
131888 KB |
Output is correct |
52 |
Correct |
1209 ms |
131884 KB |
Output is correct |
53 |
Correct |
1144 ms |
131888 KB |
Output is correct |
54 |
Correct |
1167 ms |
131888 KB |
Output is correct |
55 |
Correct |
1138 ms |
131884 KB |
Output is correct |
56 |
Correct |
1172 ms |
131788 KB |
Output is correct |
57 |
Correct |
1180 ms |
131924 KB |
Output is correct |
58 |
Correct |
1152 ms |
131952 KB |
Output is correct |
59 |
Correct |
1244 ms |
131888 KB |
Output is correct |
60 |
Correct |
1174 ms |
131884 KB |
Output is correct |
61 |
Correct |
1164 ms |
131884 KB |
Output is correct |
62 |
Correct |
1178 ms |
131836 KB |
Output is correct |
63 |
Correct |
1162 ms |
131952 KB |
Output is correct |
64 |
Correct |
1192 ms |
131952 KB |
Output is correct |
65 |
Correct |
1154 ms |
131884 KB |
Output is correct |
66 |
Correct |
1176 ms |
131892 KB |
Output is correct |
67 |
Correct |
1170 ms |
131888 KB |
Output is correct |
68 |
Correct |
1176 ms |
131924 KB |
Output is correct |
69 |
Correct |
1190 ms |
131988 KB |
Output is correct |
70 |
Correct |
1142 ms |
132120 KB |
Output is correct |
71 |
Correct |
1150 ms |
131952 KB |
Output is correct |
72 |
Correct |
1147 ms |
131836 KB |
Output is correct |
73 |
Correct |
1155 ms |
131884 KB |
Output is correct |
74 |
Correct |
1163 ms |
131884 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
2 ms |
984 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |