#include <bits/stdc++.h>
using namespace std;
const int maxn = 200005;
int n, q;
long long s, t;
int a[maxn];
long long delta[maxn];
struct state
{
long long positive_sum; // multiply by s
long long negative_sum; // multiply by t
};
struct segment_tree
{
state tree[4 * maxn];
state combine(const state left_child, const state right_child)
{
state result;
result.positive_sum = left_child.positive_sum + right_child.positive_sum;
result.negative_sum = left_child.negative_sum + right_child.negative_sum;
return result;
}
void build(int node, int l, int r)
{
if (l == r)
{
if (delta[l] < 0)
{
tree[node].negative_sum = delta[l];
tree[node].positive_sum = 0;
}
else
{
tree[node].positive_sum = delta[l];
tree[node].negative_sum = 0;
}
return;
}
int mid = (l + r) / 2;
build(2 * node, l, mid);
build(2 * node + 1, mid + 1, r);
tree[node] = combine(tree[2 * node], tree[2 * node + 1]);
}
void update(int node, int l, int r, int pos, long long val)
{
if (l == r)
{
if (val < 0)
{
tree[node].negative_sum = val;
tree[node].positive_sum = 0;
}
else
{
tree[node].positive_sum = val;
tree[node].negative_sum = 0;
}
return;
}
int mid = (l + r) / 2;
if (pos <= mid)
{
update(2 * node, l, mid, pos, val);
}
else
{
update(2 * node + 1, mid + 1, r, pos, val);
}
tree[node] = combine(tree[2 * node], tree[2 * node + 1]);
}
void build()
{
build(1, 1, n);
}
void update(int pos, long long val)
{
update(1, 1, n, pos, val);
}
};
segment_tree tree;
void fastIO()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
}
int main()
{
fastIO();
cin >> n >> q >> s >> t;
for (int i = 1; i <= n + 1; ++i)
{
cin >> a[i];
}
for (int i = 1; i <= n; ++i)
{
delta[i] = a[i] - a[i + 1];
}
tree.build();
for (int i = 1; i <= q; ++i)
{
int l, r, val;
cin >> l >> r >> val;
if (l != 0)
{
delta[l] -= val;
tree.update(l, delta[l]);
}
if (r != n)
{
delta[r + 1] += val;
tree.update(r + 1, delta[r + 1]);
}
cout << tree.tree[1].negative_sum * s + tree.tree[1].positive_sum * t << "\n";
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
2 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
2 ms |
340 KB |
Output is correct |
9 |
Correct |
2 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
159 ms |
12356 KB |
Output is correct |
2 |
Correct |
177 ms |
12892 KB |
Output is correct |
3 |
Correct |
173 ms |
13488 KB |
Output is correct |
4 |
Correct |
160 ms |
12720 KB |
Output is correct |
5 |
Correct |
144 ms |
13328 KB |
Output is correct |
6 |
Correct |
79 ms |
13764 KB |
Output is correct |
7 |
Correct |
80 ms |
13780 KB |
Output is correct |
8 |
Correct |
161 ms |
13748 KB |
Output is correct |
9 |
Correct |
135 ms |
14120 KB |
Output is correct |
10 |
Correct |
131 ms |
12808 KB |
Output is correct |
11 |
Correct |
88 ms |
13776 KB |
Output is correct |
12 |
Correct |
79 ms |
14156 KB |
Output is correct |
13 |
Correct |
81 ms |
14708 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
2 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
2 ms |
340 KB |
Output is correct |
9 |
Correct |
2 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
212 KB |
Output is correct |
22 |
Correct |
159 ms |
12356 KB |
Output is correct |
23 |
Correct |
177 ms |
12892 KB |
Output is correct |
24 |
Correct |
173 ms |
13488 KB |
Output is correct |
25 |
Correct |
160 ms |
12720 KB |
Output is correct |
26 |
Correct |
144 ms |
13328 KB |
Output is correct |
27 |
Correct |
79 ms |
13764 KB |
Output is correct |
28 |
Correct |
80 ms |
13780 KB |
Output is correct |
29 |
Correct |
161 ms |
13748 KB |
Output is correct |
30 |
Correct |
135 ms |
14120 KB |
Output is correct |
31 |
Correct |
131 ms |
12808 KB |
Output is correct |
32 |
Correct |
88 ms |
13776 KB |
Output is correct |
33 |
Correct |
79 ms |
14156 KB |
Output is correct |
34 |
Correct |
81 ms |
14708 KB |
Output is correct |
35 |
Correct |
177 ms |
12512 KB |
Output is correct |
36 |
Correct |
205 ms |
13860 KB |
Output is correct |
37 |
Correct |
157 ms |
14608 KB |
Output is correct |
38 |
Correct |
188 ms |
14404 KB |
Output is correct |
39 |
Correct |
188 ms |
14456 KB |
Output is correct |
40 |
Correct |
178 ms |
14424 KB |
Output is correct |
41 |
Correct |
174 ms |
14300 KB |
Output is correct |
42 |
Correct |
180 ms |
14312 KB |
Output is correct |
43 |
Correct |
152 ms |
13632 KB |
Output is correct |
44 |
Correct |
170 ms |
13988 KB |
Output is correct |
45 |
Correct |
164 ms |
13852 KB |
Output is correct |
46 |
Correct |
157 ms |
14512 KB |
Output is correct |
47 |
Correct |
80 ms |
14480 KB |
Output is correct |
48 |
Correct |
91 ms |
14708 KB |
Output is correct |
49 |
Correct |
145 ms |
13596 KB |
Output is correct |
50 |
Correct |
89 ms |
14352 KB |
Output is correct |
51 |
Correct |
81 ms |
14460 KB |
Output is correct |
52 |
Correct |
93 ms |
14448 KB |
Output is correct |