#include <bits/stdc++.h>
#define ll long long
#define ok puts("ok");
using namespace std;
const int N = (int)1e5 + 7;
int k, m, d, a, n;
int t[N], b[N];
ll dp[N];
vector <int> vec;
int getpos(int x) {
return lower_bound(vec.begin(), vec.end(), x) - vec.begin();
}
ll tree[4 * N];
void build(int v = 1, int l = 0, int r = vec.size() - 1) {
if (l == r) {
tree[v] = -1e18;
return ;
}
int mid = (l + r) >> 1;
build(v + v, l, mid);
build(v + v + 1, mid + 1, r);
tree[v] = -1e18;
}
void upd(int pos, ll val, int v = 1, int l = 0, int r = vec.size() - 1) {
if (l == r) {
tree[v] = max(tree[v], val);
return ;
}
int mid = (l + r) >> 1;
if (pos <= mid) {
upd(pos, val, v + v, l, mid);
} else {
upd(pos, val, v + v + 1, mid + 1, r);
}
tree[v] = max(tree[v + v], tree[v + v + 1]);
}
ll get(int l, int r, int v = 1, int tl = 0, int tr = vec.size() - 1) {
if (tl > r || tr < l) return -1e18;
if (l <= tl && tr <= r) return tree[v];
int mid = (tl + tr) >> 1;
return max(get(l, r, v + v, tl, mid), get(l, r, v + v + 1, mid + 1, tr));
}
main() {
scanf("%d %d %d %d %d", &k, &m, &d, &a, &n);
t[0] = k;
vec.push_back(k % d);
for (int i = 1; i <= n; i++) {
scanf("%d %d", &t[i], &b[i]);
vec.push_back(t[i] % d);
}
t[n + 1] = m;
vec.push_back(t[n + 1] % d);
sort(vec.begin(), vec.end());
vec.resize(unique(vec.begin(), vec.end()) - vec.begin());
build();
upd(getpos(t[0] % d), t[0] / d * a);
for (int i = 1; i <= n + 1; i++) {
// dp[i] = -1e18;
// for (int j = 0; j < i; j++) {
// dp[i] = max(dp[i], dp[j] - (t[i] - t[j] + d - 1) / d * 1ll * a);
// }
// dp[i] += b[i];
ll mx = -1e18;
mx = get(getpos(t[i] % d), vec.size() - 1);
mx = max(mx, get(0, getpos(t[i] % d) - 1) - a);
dp[i] = b[i] - t[i] / d * a + mx;
upd(getpos(t[i] % d), dp[i] + t[i] / d * a);
}
cout << dp[n + 1];
}
/*
0 10 4 10 2
3 10
8 5
*/
Compilation message
koala.cpp:54:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main() {
^
koala.cpp: In function 'int main()':
koala.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d %d %d %d", &k, &m, &d, &a, &n);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
koala.cpp:59:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &t[i], &b[i]);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
6 ms |
384 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
69 ms |
2416 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
128 ms |
3436 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
