/**
* author: hashman
* created:
**/
#include <bits/stdc++.h>
using namespace std;
string to_string(string s) {
return '"' + s + '"';
}
string to_string(const char* s) {
return to_string((string) s);
}
string to_string(bool b) {
return (b ? "true" : "false");
}
template <typename A, typename B>
string to_string(pair<A, B> p) {
return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
template <typename A>
string to_string(A v) {
bool first = true;
string res = "{";
for (const auto &x : v) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(x);
}
res += "}";
return res;
}
void debug_out() {
cerr << endl;
}
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
cerr << " " << to_string(H);
debug_out(T...);
}
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
using Int = long long;
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n;
cin >> n;
Int d;
cin >> d;
vector<Int> c(n);
for (int i = 0; i < n; i++) {
cin >> c[i];
}
int q;
cin >> q;
for (int i = 0; i < q; i++) {
int l, r;
cin >> l >> r;
--l; --r;
Int ans = 0, prv = c[r];
for (int j = r - 1; j >= l; j--) {
Int cur = c[j] - prv;
if (cur < 0) {
prv = c[j];
} else {
Int x = (cur + d - 1) / d;
ans += x;
prv = c[j] - (d * x);
}
}
if (prv < 0) {
cout << -1 << '\n';
} else {
cout << ans << '\n';
}
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
31 ms |
572 KB |
Output is correct |
5 |
Correct |
20 ms |
348 KB |
Output is correct |
6 |
Correct |
21 ms |
556 KB |
Output is correct |
7 |
Correct |
10 ms |
516 KB |
Output is correct |
8 |
Correct |
18 ms |
500 KB |
Output is correct |
9 |
Correct |
19 ms |
348 KB |
Output is correct |
10 |
Correct |
19 ms |
348 KB |
Output is correct |
11 |
Correct |
19 ms |
548 KB |
Output is correct |
12 |
Correct |
3 ms |
600 KB |
Output is correct |
13 |
Correct |
3 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2062 ms |
2792 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2055 ms |
4900 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2060 ms |
2644 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
31 ms |
572 KB |
Output is correct |
5 |
Correct |
20 ms |
348 KB |
Output is correct |
6 |
Correct |
21 ms |
556 KB |
Output is correct |
7 |
Correct |
10 ms |
516 KB |
Output is correct |
8 |
Correct |
18 ms |
500 KB |
Output is correct |
9 |
Correct |
19 ms |
348 KB |
Output is correct |
10 |
Correct |
19 ms |
348 KB |
Output is correct |
11 |
Correct |
19 ms |
548 KB |
Output is correct |
12 |
Correct |
3 ms |
600 KB |
Output is correct |
13 |
Correct |
3 ms |
348 KB |
Output is correct |
14 |
Execution timed out |
2062 ms |
2792 KB |
Time limit exceeded |
15 |
Halted |
0 ms |
0 KB |
- |