#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N = 3010;
int v[N];
int d, n;
int32_t main(){
ios::sync_with_stdio(false); cin.tie(0);
cin >> n >> d;
for(int i = 1;i <= n;i++)
cin >> v[i];
int q;
cin >> q;
while(q--){
int l, r;
cin >> l >> r;
int p = v[r];
int res = 0;
bool aux = true;
for(int i = r-1;i >=l;i--){
if(v[i] <= p) p = v[i];
else{
int t = v[i]-p;
t = (t+d-1)/d;
res += t;
if(v[i] < t*d) {
aux = false;
break;
}
p = v[i]-t*d;
}
}
if(!aux){
cout << -1 << '\n';
continue;
}
cout << res << '\n';
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 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 |
19 ms |
588 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
13 ms |
552 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
16 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
552 KB |
Output is correct |
12 |
Correct |
3 ms |
348 KB |
Output is correct |
13 |
Correct |
2 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1262 ms |
7676 KB |
Output is correct |
2 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 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 |
19 ms |
588 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
13 ms |
552 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
344 KB |
Output is correct |
10 |
Correct |
16 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
552 KB |
Output is correct |
12 |
Correct |
3 ms |
348 KB |
Output is correct |
13 |
Correct |
2 ms |
348 KB |
Output is correct |
14 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
15 |
Halted |
0 ms |
0 KB |
- |