/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
const int N = 3e5+100, M = 1e5+10, K = 20, MX = 30;
int n, q, to[N][K];
ll D, C[N], B[N], suf[N], arr[N], rmq[N][K], pref[N], S[N], dp[N][K];
ll get(int l, int r){
int k= log2(r-l+1);
return min(rmq[l][k], rmq[r-(1<<k)+1][k]);
}
void solve(){
cin >> n >> D;
for(int i = 1; i <= n; ++i) cin >> C[i];
B[1] = C[1] % D;
for(int i = 2; i <= n; ++i){
if(C[i] % D >= C[i-1] % D){
B[i] = B[i-1] + (C[i]%D) - (C[i-1]%D);
}else{
B[i] = B[i-1] + D + (C[i]%D) - (C[i-1]%D);
}
}
for(int i = 1; i <= n; ++i) arr[i] = rmq[i][0] = C[i] - B[i];
for(int j = 1; j < K ;++j){
for(int i = 1; i + (1<<j) <= n+1; ++i){
rmq[i][j] = min(rmq[i][j - 1], rmq[i+(1<<(j-1))][j-1]);
}
}
pref[0] = 0;
S[0] = 0;
C[0] = arr[0] = 0;
for(int i = 1; i <= n; ++i) pref[i] = pref[i - 1] + B[i];
for(int i = 1; i <= n; ++i) S[i] = S[i - 1] + C[i];
vector<int> Q;
to[1][0] = 0;
dp[1][0] = arr[1] * (1 - to[1][0]);
Q.pb(1);
for(int i = 2; i <= n; ++i){
while(!Q.empty() && arr[Q.back()] > arr[i]) Q.pop_back();
if(Q.empty()) to[i][0] = 0;
else to[i][0] = Q.back();
dp[i][0] = arr[i] * (i - to[i][0]);
Q.pb(i);
}
for(int j = 1; j < K; ++j) for(int i = 1; i <= n; ++i){
dp[i][j] = dp[i][j - 1] + dp[to[i][j - 1]][j - 1];
to[i][j] = to[to[i][j - 1]][j - 1];
}
cin >> q;
for(int i = 1; i <= q; ++i){
int l, r; cin >> l >> r;
ll ans = 0;
ll mn = get(l, r);
ll R = B[l] - (C[l]%D);
if(mn + R < 0){
cout << -1 << '\n';
continue;
}
ans = (S[r] - S[l-1]) - (pref[r] - pref[l-1]);
int p = r;
for(int j = K-1; j >= 0; --j){
if(to[p][j] >= l){
ans -= dp[p][j];
p = to[p][j];
}
}
ans -= (p-l+1)*arr[p];
cout << ans / D << '\n';
}
}
int main(){
cin.tie(0); ios::sync_with_stdio(0);
int tt = 1, aa;
// freopen("in.txt", "r", stdin);
// freopen("out.txt", "w", stdout);
while(tt--){
solve();
}
cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
return 0;
}
Compilation message
Main.cpp: In function 'int main()':
Main.cpp:88:15: warning: unused variable 'aa' [-Wunused-variable]
88 | int tt = 1, aa;
| ^~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
472 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
2 ms |
1884 KB |
Output is correct |
5 |
Correct |
2 ms |
2012 KB |
Output is correct |
6 |
Correct |
2 ms |
1248 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
2 ms |
1628 KB |
Output is correct |
9 |
Correct |
2 ms |
1628 KB |
Output is correct |
10 |
Correct |
2 ms |
1884 KB |
Output is correct |
11 |
Correct |
2 ms |
1884 KB |
Output is correct |
12 |
Correct |
2 ms |
1884 KB |
Output is correct |
13 |
Correct |
2 ms |
1884 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
389 ms |
136500 KB |
Output is correct |
2 |
Correct |
412 ms |
136268 KB |
Output is correct |
3 |
Correct |
49 ms |
4688 KB |
Output is correct |
4 |
Correct |
199 ms |
134996 KB |
Output is correct |
5 |
Correct |
212 ms |
134992 KB |
Output is correct |
6 |
Correct |
342 ms |
135324 KB |
Output is correct |
7 |
Correct |
347 ms |
135320 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
62 ms |
8456 KB |
Output is correct |
2 |
Correct |
242 ms |
142420 KB |
Output is correct |
3 |
Correct |
235 ms |
142416 KB |
Output is correct |
4 |
Correct |
265 ms |
142536 KB |
Output is correct |
5 |
Correct |
239 ms |
142420 KB |
Output is correct |
6 |
Correct |
276 ms |
136372 KB |
Output is correct |
7 |
Correct |
275 ms |
136432 KB |
Output is correct |
8 |
Correct |
303 ms |
139616 KB |
Output is correct |
9 |
Correct |
289 ms |
139604 KB |
Output is correct |
10 |
Correct |
430 ms |
139192 KB |
Output is correct |
11 |
Correct |
493 ms |
139176 KB |
Output is correct |
12 |
Correct |
391 ms |
141520 KB |
Output is correct |
13 |
Correct |
383 ms |
141608 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
238 ms |
113752 KB |
Output is correct |
2 |
Correct |
267 ms |
136020 KB |
Output is correct |
3 |
Correct |
130 ms |
34588 KB |
Output is correct |
4 |
Correct |
282 ms |
139348 KB |
Output is correct |
5 |
Correct |
210 ms |
126288 KB |
Output is correct |
6 |
Correct |
231 ms |
142420 KB |
Output is correct |
7 |
Correct |
209 ms |
114160 KB |
Output is correct |
8 |
Correct |
236 ms |
142396 KB |
Output is correct |
9 |
Correct |
256 ms |
135504 KB |
Output is correct |
10 |
Correct |
222 ms |
135216 KB |
Output is correct |
11 |
Correct |
294 ms |
139296 KB |
Output is correct |
12 |
Correct |
260 ms |
138580 KB |
Output is correct |
13 |
Correct |
218 ms |
142416 KB |
Output is correct |
14 |
Correct |
212 ms |
138064 KB |
Output is correct |
15 |
Correct |
287 ms |
141700 KB |
Output is correct |
16 |
Correct |
207 ms |
137812 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
472 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
2 ms |
1884 KB |
Output is correct |
5 |
Correct |
2 ms |
2012 KB |
Output is correct |
6 |
Correct |
2 ms |
1248 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
2 ms |
1628 KB |
Output is correct |
9 |
Correct |
2 ms |
1628 KB |
Output is correct |
10 |
Correct |
2 ms |
1884 KB |
Output is correct |
11 |
Correct |
2 ms |
1884 KB |
Output is correct |
12 |
Correct |
2 ms |
1884 KB |
Output is correct |
13 |
Correct |
2 ms |
1884 KB |
Output is correct |
14 |
Correct |
389 ms |
136500 KB |
Output is correct |
15 |
Correct |
412 ms |
136268 KB |
Output is correct |
16 |
Correct |
49 ms |
4688 KB |
Output is correct |
17 |
Correct |
199 ms |
134996 KB |
Output is correct |
18 |
Correct |
212 ms |
134992 KB |
Output is correct |
19 |
Correct |
342 ms |
135324 KB |
Output is correct |
20 |
Correct |
347 ms |
135320 KB |
Output is correct |
21 |
Correct |
62 ms |
8456 KB |
Output is correct |
22 |
Correct |
242 ms |
142420 KB |
Output is correct |
23 |
Correct |
235 ms |
142416 KB |
Output is correct |
24 |
Correct |
265 ms |
142536 KB |
Output is correct |
25 |
Correct |
239 ms |
142420 KB |
Output is correct |
26 |
Correct |
276 ms |
136372 KB |
Output is correct |
27 |
Correct |
275 ms |
136432 KB |
Output is correct |
28 |
Correct |
303 ms |
139616 KB |
Output is correct |
29 |
Correct |
289 ms |
139604 KB |
Output is correct |
30 |
Correct |
430 ms |
139192 KB |
Output is correct |
31 |
Correct |
493 ms |
139176 KB |
Output is correct |
32 |
Correct |
391 ms |
141520 KB |
Output is correct |
33 |
Correct |
383 ms |
141608 KB |
Output is correct |
34 |
Correct |
238 ms |
113752 KB |
Output is correct |
35 |
Correct |
267 ms |
136020 KB |
Output is correct |
36 |
Correct |
130 ms |
34588 KB |
Output is correct |
37 |
Correct |
282 ms |
139348 KB |
Output is correct |
38 |
Correct |
210 ms |
126288 KB |
Output is correct |
39 |
Correct |
231 ms |
142420 KB |
Output is correct |
40 |
Correct |
209 ms |
114160 KB |
Output is correct |
41 |
Correct |
236 ms |
142396 KB |
Output is correct |
42 |
Correct |
256 ms |
135504 KB |
Output is correct |
43 |
Correct |
222 ms |
135216 KB |
Output is correct |
44 |
Correct |
294 ms |
139296 KB |
Output is correct |
45 |
Correct |
260 ms |
138580 KB |
Output is correct |
46 |
Correct |
218 ms |
142416 KB |
Output is correct |
47 |
Correct |
212 ms |
138064 KB |
Output is correct |
48 |
Correct |
287 ms |
141700 KB |
Output is correct |
49 |
Correct |
207 ms |
137812 KB |
Output is correct |
50 |
Correct |
239 ms |
142084 KB |
Output is correct |
51 |
Correct |
277 ms |
136276 KB |
Output is correct |
52 |
Correct |
283 ms |
139092 KB |
Output is correct |
53 |
Correct |
453 ms |
138592 KB |
Output is correct |
54 |
Correct |
377 ms |
141012 KB |
Output is correct |
55 |
Correct |
248 ms |
141904 KB |
Output is correct |
56 |
Correct |
205 ms |
137552 KB |
Output is correct |
57 |
Correct |
198 ms |
134756 KB |
Output is correct |
58 |
Correct |
204 ms |
134744 KB |
Output is correct |
59 |
Correct |
282 ms |
139860 KB |
Output is correct |
60 |
Correct |
221 ms |
137652 KB |
Output is correct |
61 |
Correct |
427 ms |
138692 KB |
Output is correct |
62 |
Correct |
461 ms |
138492 KB |
Output is correct |
63 |
Correct |
410 ms |
140728 KB |
Output is correct |
64 |
Correct |
221 ms |
137676 KB |
Output is correct |