#include <bits/stdc++.h>
using namespace std;
int N, M;
int A[100005];
long long pre[100005];
int opt[205][100005];
long long dp[2][100005];
int ans[105];
long long cost(int l, int r) {
return (pre[r] - pre[l - 1]) * pre[l - 1];
}
void dnc(int K, int l, int r, int kl, int kr) {
if(l > r) return;
int mid = (l + r) >> 1;
long long best = -1e18, tmp;
int id = 0;
for(int i = min(mid, kr); i >= kl; i--) {
tmp = dp[!(K & 1)][i - 1] + cost(i, mid);
if(tmp > best) {
best = tmp, id = i;
}
}
dp[K & 1][mid] = best;
opt[K][mid] = id;
dnc(K, l, mid - 1, kl, id);
dnc(K, mid + 1, r, id, kr);
}
void backtrack(int K, int now) {
ans[K] = now;
if(K == 0) return;
backtrack(K - 1, opt[K][now] - 1);
}
int main() {
// freopen("inp", "r", stdin);
scanf("%d %d", &N, &M);
for(int i = 1; i <= N; i++) {
scanf("%d", &A[i]);
pre[i] = A[i] + pre[i - 1];
}
for(int k = 1; k <= M; k++) {
dnc(k, k + 1, N, k + 1, N);
}
long long best = 0, id = 0;
backtrack(M, N);
printf("%lld\n", dp[M & 1][N]);
for(int i = 0; i < M; i++) {
printf("%d ", ans[i]);
}
}
Compilation message
sequence.cpp: In function 'int main()':
sequence.cpp:49:13: warning: unused variable 'best' [-Wunused-variable]
long long best = 0, id = 0;
^~~~
sequence.cpp:49:23: warning: unused variable 'id' [-Wunused-variable]
long long best = 0, id = 0;
^~
sequence.cpp:41:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &N, &M);
~~~~~^~~~~~~~~~~~~~~~~
sequence.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &A[i]);
~~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 108 == 108 |
| 2 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 999 == 999 |
| 3 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 0 == 0 |
| 4 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 1542524 == 1542524 |
| 5 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 4500000000 == 4500000000 |
| 6 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 1 == 1 |
| 7 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 1 == 1 |
| 8 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 1 == 1 |
| 9 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 100400096 == 100400096 |
| 10 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 900320000 == 900320000 |
| 11 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 3698080248 == 3698080248 |
| 12 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 3200320000 == 3200320000 |
| 13 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 140072 == 140072 |
| 14 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 376041456 == 376041456 |
| 15 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 805 == 805 |
| 16 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 900189994 == 900189994 |
| 17 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 999919994 == 999919994 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 1093956 == 1093956 |
| 2 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 302460000 == 302460000 |
| 3 |
Correct |
5 ms |
512 KB |
contestant found the optimal answer: 122453454361 == 122453454361 |
| 4 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 93663683509 == 93663683509 |
| 5 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 1005304678 == 1005304678 |
| 6 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 933702 == 933702 |
| 7 |
Correct |
5 ms |
512 KB |
contestant found the optimal answer: 25082842857 == 25082842857 |
| 8 |
Correct |
4 ms |
384 KB |
contestant found the optimal answer: 687136 == 687136 |
| 9 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 27295930079 == 27295930079 |
| 10 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 29000419931 == 29000419931 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 610590000 == 610590000 |
| 2 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 311760000 == 311760000 |
| 3 |
Correct |
5 ms |
1408 KB |
contestant found the optimal answer: 1989216017013 == 1989216017013 |
| 4 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 1499437552673 == 1499437552673 |
| 5 |
Correct |
5 ms |
1024 KB |
contestant found the optimal answer: 1019625819 == 1019625819 |
| 6 |
Correct |
5 ms |
1280 KB |
contestant found the optimal answer: 107630884 == 107630884 |
| 7 |
Correct |
5 ms |
1408 KB |
contestant found the optimal answer: 475357671774 == 475357671774 |
| 8 |
Correct |
5 ms |
512 KB |
contestant found the optimal answer: 193556962 == 193556962 |
| 9 |
Correct |
5 ms |
488 KB |
contestant found the optimal answer: 482389919803 == 482389919803 |
| 10 |
Correct |
5 ms |
640 KB |
contestant found the optimal answer: 490686959791 == 490686959791 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 21503404 == 21503404 |
| 2 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 140412195 == 140412195 |
| 3 |
Correct |
10 ms |
2048 KB |
contestant found the optimal answer: 49729674225461 == 49729674225461 |
| 4 |
Correct |
5 ms |
384 KB |
contestant found the optimal answer: 37485571387523 == 37485571387523 |
| 5 |
Correct |
13 ms |
2048 KB |
contestant found the optimal answer: 679388326 == 679388326 |
| 6 |
Correct |
11 ms |
1792 KB |
contestant found the optimal answer: 4699030287 == 4699030287 |
| 7 |
Correct |
12 ms |
2048 KB |
contestant found the optimal answer: 12418819758185 == 12418819758185 |
| 8 |
Correct |
9 ms |
2048 KB |
contestant found the optimal answer: 31093317350 == 31093317350 |
| 9 |
Correct |
6 ms |
768 KB |
contestant found the optimal answer: 12194625429236 == 12194625429236 |
| 10 |
Correct |
8 ms |
1024 KB |
contestant found the optimal answer: 12345131038664 == 12345131038664 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
768 KB |
contestant found the optimal answer: 1818678304 == 1818678304 |
| 2 |
Correct |
7 ms |
896 KB |
contestant found the optimal answer: 1326260195 == 1326260195 |
| 3 |
Correct |
67 ms |
9336 KB |
contestant found the optimal answer: 4973126687469639 == 4973126687469639 |
| 4 |
Correct |
7 ms |
768 KB |
contestant found the optimal answer: 3748491676694116 == 3748491676694116 |
| 5 |
Correct |
73 ms |
5880 KB |
contestant found the optimal answer: 1085432199 == 1085432199 |
| 6 |
Correct |
70 ms |
6648 KB |
contestant found the optimal answer: 514790755404 == 514790755404 |
| 7 |
Correct |
66 ms |
7160 KB |
contestant found the optimal answer: 1256105310476641 == 1256105310476641 |
| 8 |
Correct |
48 ms |
5880 KB |
contestant found the optimal answer: 3099592898816 == 3099592898816 |
| 9 |
Correct |
67 ms |
6648 KB |
contestant found the optimal answer: 1241131419367412 == 1241131419367412 |
| 10 |
Correct |
83 ms |
8440 KB |
contestant found the optimal answer: 1243084101967798 == 1243084101967798 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
40 ms |
4220 KB |
contestant found the optimal answer: 19795776960 == 19795776960 |
| 2 |
Correct |
38 ms |
4220 KB |
contestant found the optimal answer: 19874432173 == 19874432173 |
| 3 |
Correct |
672 ms |
81400 KB |
contestant found the optimal answer: 497313449256899208 == 497313449256899208 |
| 4 |
Correct |
30 ms |
4216 KB |
contestant found the optimal answer: 374850090734572421 == 374850090734572421 |
| 5 |
Correct |
1285 ms |
81408 KB |
contestant found the optimal answer: 36183271951 == 36183271951 |
| 6 |
Correct |
789 ms |
57852 KB |
contestant found the optimal answer: 51629847150471 == 51629847150471 |
| 7 |
Correct |
675 ms |
61876 KB |
contestant found the optimal answer: 124074747024496432 == 124074747024496432 |
| 8 |
Correct |
490 ms |
51064 KB |
contestant found the optimal answer: 309959349080800 == 309959349080800 |
| 9 |
Correct |
649 ms |
57848 KB |
contestant found the optimal answer: 124113525649823701 == 124113525649823701 |
| 10 |
Correct |
837 ms |
73592 KB |
contestant found the optimal answer: 124309619349406845 == 124309619349406845 |
