#include <bits/stdc++.h>
using namespace std;
int N, K;
long long pre[100005];
long long dp[100005][25];
int par[100005][25];
deque<int>dq;
vector<int> v;
double f(int idx1, int idx2, int lvl){
return 1.0*(dp[idx1][lvl]-dp[idx2][lvl]-pre[idx1]*pre[idx1]+pre[idx2]*pre[idx2])/(pre[idx2]-pre[idx1]);
}
int main(){
cin.sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> N >> K;
for(int i = 1; i<=N; i++){
cin >> pre[i];
if(pre[i]){
v.push_back(i);
}
pre[i] += pre[i-1];
}
for(int k = 1; k<=K; k++){
dq.push_back(k);
for(int i = k+1; i<=N; i++){
while(dq.size() >= 2){
if(f(dq[0], dq[1], k-1) < pre[i]){
dq.pop_front();
}
else{
break;
}
}
dp[i][k] = dp[dq.front()][k-1] + pre[dq.front()]*(pre[i]-pre[dq.front()]);
par[i][k] = dq.front();
//cout << i << " " << k << " " << dp[i][k] << " " << par[i][k] << endl;
while(dq.size() >= 2){
if(f(dq[dq.size()-2], dq.back(), k-1) > f(dq.back(), i, k-1)){
dq.pop_back();
}
else{
break;
}
}
dq.push_back(i);
}
dq.clear();
}
cout << dp[N][K] << "\n";
vector<int> v;
int crnt = N;
for(int k = K; k>=1; k--){
v.push_back(par[crnt][k]);
crnt = par[crnt][k];
}
sort(v.begin(), v.end());
for(int n : v){
cout << n << " ";
}
cout << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
contestant found the optimal answer: 108 == 108 |
2 |
Correct |
2 ms |
376 KB |
contestant found the optimal answer: 999 == 999 |
3 |
Correct |
2 ms |
252 KB |
contestant found the optimal answer: 0 == 0 |
4 |
Correct |
2 ms |
376 KB |
contestant found the optimal answer: 1542524 == 1542524 |
5 |
Correct |
2 ms |
376 KB |
contestant found the optimal answer: 4500000000 == 4500000000 |
6 |
Incorrect |
2 ms |
376 KB |
contestant didn't find the optimal answer: 0 < 1 |
7 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
contestant didn't find the optimal answer: 252308 < 1093956 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
contestant didn't find the optimal answer: 484133 < 610590000 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
632 KB |
contestant didn't find the optimal answer: 395622 < 21503404 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
6 ms |
3448 KB |
contestant didn't find the optimal answer: 1187850 < 1818678304 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
45 ms |
31240 KB |
contestant didn't find the optimal answer: 5054352 < 19795776960 |
2 |
Halted |
0 ms |
0 KB |
- |