#include <bits/stdc++.h>
using namespace std;
const int MAX = 100005;
typedef long long ll;
typedef pair<ll, ll> pll;
#define f first
#define s second
pll line[MAX];
int orig[MAX];
int ct = 0;
int ptr = 0;
bool bad(pll l0, pll l1, pll l2) {
return (l1.s-l0.s)*(l0.f-l2.f) >= (l0.f-l1.f)*(l2.s-l0.s);
}
ll f(pll l, ll x) {
return l.f * x + l.s;
}
void add(pll l, int i) {
while (ct >= 2 && ptr < ct && bad(line[ct-1], line[ct], l)) {
ct--;
}
ptr = min(ptr, ct);
ct++;
line[ct] = l;
orig[ct] = i;
}
pair<ll, int> get(ll x) {
ptr = max(ptr, 1);
if (ct == 0) { return {0, 0}; }
while (ptr < ct && f(line[ptr], x) < f(line[ptr+1], x)) {
ptr++;
}
return {f(line[ptr], x), orig[ptr]};
}
int a[MAX];
ll p[MAX];
ll dp[MAX][2];
int last[205][MAX];
int main() {
// double c = clock();
//freopen("a.in", "r", stdin);
//freopen("a.out", "w", stdout);
int n, k0; scanf("%d %d", &n, &k0);
for (int i=1; i<=n; i++) {
scanf("%d", &a[i]);
p[i] = (ll)p[i-1] + (ll)a[i];
}
for (int k=1; k<=k0+1; k++) {
ct = 0;
for (int i=k-1; i<=n; i++) {
if (k == 1) {
dp[i][k] = 0;
}
else {
add({p[i], (ll)dp[i][(k+1)%2]-(ll)p[i]*(ll)p[i]}, i);
if (i != k-1) {
pll ans = get(p[i]);
dp[i][k%2] = ans.f;
last[k][i] = (int)ans.s;
}
}
}
}
k0++;
printf("%lld\n", dp[n][k0%2]);
while (k0 != 1) {
int bef = last[k0][n];
printf("%d ", bef);
n = bef; k0--;
}
// cout << (clock() - c) / (double)CLOCKS_PER_SEC;
}
Compilation message
sequence.cpp: In function 'int main()':
sequence.cpp:52:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
int n, k0; scanf("%d %d", &n, &k0);
^
sequence.cpp:54:21: 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 |
0 ms |
86784 KB |
contestant found the optimal answer: 108 == 108 |
| 2 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 999 == 999 |
| 3 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 0 == 0 |
| 4 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1542524 == 1542524 |
| 5 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 4500000000 == 4500000000 |
| 6 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1 == 1 |
| 7 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1 == 1 |
| 8 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1 == 1 |
| 9 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 100400096 == 100400096 |
| 10 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 900320000 == 900320000 |
| 11 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 3698080248 == 3698080248 |
| 12 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 3200320000 == 3200320000 |
| 13 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 140072 == 140072 |
| 14 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 376041456 == 376041456 |
| 15 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 805 == 805 |
| 16 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 900189994 == 900189994 |
| 17 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 999919994 == 999919994 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1093956 == 1093956 |
| 2 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 302460000 == 302460000 |
| 3 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 122453454361 == 122453454361 |
| 4 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 93663683509 == 93663683509 |
| 5 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1005304678 == 1005304678 |
| 6 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 933702 == 933702 |
| 7 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 25082842857 == 25082842857 |
| 8 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 687136 == 687136 |
| 9 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 27295930079 == 27295930079 |
| 10 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 29000419931 == 29000419931 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 610590000 == 610590000 |
| 2 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 311760000 == 311760000 |
| 3 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1989216017013 == 1989216017013 |
| 4 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1499437552673 == 1499437552673 |
| 5 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1019625819 == 1019625819 |
| 6 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 107630884 == 107630884 |
| 7 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 475357671774 == 475357671774 |
| 8 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 193556962 == 193556962 |
| 9 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 482389919803 == 482389919803 |
| 10 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 490686959791 == 490686959791 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 21503404 == 21503404 |
| 2 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 140412195 == 140412195 |
| 3 |
Correct |
3 ms |
86784 KB |
contestant found the optimal answer: 49729674225461 == 49729674225461 |
| 4 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 37485571387523 == 37485571387523 |
| 5 |
Correct |
3 ms |
86784 KB |
contestant found the optimal answer: 679388326 == 679388326 |
| 6 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 4699030287 == 4699030287 |
| 7 |
Correct |
3 ms |
86784 KB |
contestant found the optimal answer: 12418819758185 == 12418819758185 |
| 8 |
Correct |
3 ms |
86784 KB |
contestant found the optimal answer: 31093317350 == 31093317350 |
| 9 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 12194625429236 == 12194625429236 |
| 10 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 12345131038664 == 12345131038664 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1818678304 == 1818678304 |
| 2 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 1326260195 == 1326260195 |
| 3 |
Correct |
26 ms |
86784 KB |
contestant found the optimal answer: 4973126687469639 == 4973126687469639 |
| 4 |
Correct |
0 ms |
86784 KB |
contestant found the optimal answer: 3748491676694116 == 3748491676694116 |
| 5 |
Correct |
26 ms |
86784 KB |
contestant found the optimal answer: 1085432199 == 1085432199 |
| 6 |
Correct |
29 ms |
86784 KB |
contestant found the optimal answer: 514790755404 == 514790755404 |
| 7 |
Correct |
39 ms |
86784 KB |
contestant found the optimal answer: 1256105310476641 == 1256105310476641 |
| 8 |
Correct |
26 ms |
86784 KB |
contestant found the optimal answer: 3099592898816 == 3099592898816 |
| 9 |
Correct |
29 ms |
86784 KB |
contestant found the optimal answer: 1241131419367412 == 1241131419367412 |
| 10 |
Correct |
33 ms |
86784 KB |
contestant found the optimal answer: 1243084101967798 == 1243084101967798 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
86784 KB |
contestant found the optimal answer: 19795776960 == 19795776960 |
| 2 |
Correct |
16 ms |
86784 KB |
contestant found the optimal answer: 19874432173 == 19874432173 |
| 3 |
Correct |
323 ms |
86784 KB |
contestant found the optimal answer: 497313449256899208 == 497313449256899208 |
| 4 |
Correct |
16 ms |
86784 KB |
contestant found the optimal answer: 374850090734572421 == 374850090734572421 |
| 5 |
Correct |
513 ms |
86784 KB |
contestant found the optimal answer: 36183271951 == 36183271951 |
| 6 |
Correct |
353 ms |
86784 KB |
contestant found the optimal answer: 51629847150471 == 51629847150471 |
| 7 |
Correct |
389 ms |
86784 KB |
contestant found the optimal answer: 124074747024496432 == 124074747024496432 |
| 8 |
Correct |
266 ms |
86784 KB |
contestant found the optimal answer: 309959349080800 == 309959349080800 |
| 9 |
Correct |
286 ms |
86784 KB |
contestant found the optimal answer: 124113525649823701 == 124113525649823701 |
| 10 |
Correct |
346 ms |
86784 KB |
contestant found the optimal answer: 124309619349406845 == 124309619349406845 |
