#include <bits/stdc++.h>
#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define all(a) a.begin() , a.end()
#define F first
#define S second
using namespace std;
using ll = long long;
const ll N = 3e5+5 , inf = 2e9 + 7;
const ll INF = 300000000000000 , mod = 1e9+7 , P = 6547;
ll n , k , a[N];
pair<ll,ll> dp[N][2];
ll get(ll md){
dp[0][0] = {0,0};
dp[0][1] = {-INF,0};
for(ll i = 1; i <= n; i++){
dp[i][0] = max(dp[i-1][0] , dp[i-1][1]);
pair<ll,ll> c = {dp[i-1][0].F+md+a[i] , dp[i-1][0].S+1};
pair<ll,ll> b = {dp[i-1][1].F+a[i] , dp[i-1][1].S};
dp[i][1] = max(c , b);
}
return (max(dp[n][0],dp[n][1]).S >= k);
}
void solve(){
cin >> n >> k;
for(ll i = 1; i <= n; i++) cin >> a[i];
ll l = -INF , r = 0 , res = 0;
while(l <= r){
ll md = (l+r) >> 1;
if(get(md)){
res = md;
r = md-1;
} else {
l = md+1;
}
}
get(res);
cout << max(dp[n][1].F , dp[n][0].F)-res*k << "\n";
}
/*
*/
signed main(){
ios;
solve();
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
64 ms |
14676 KB |
Output is correct |
| 2 |
Correct |
74 ms |
14788 KB |
Output is correct |
| 3 |
Correct |
67 ms |
14932 KB |
Output is correct |
| 4 |
Correct |
74 ms |
15304 KB |
Output is correct |
| 5 |
Correct |
65 ms |
14804 KB |
Output is correct |
| 6 |
Correct |
69 ms |
14916 KB |
Output is correct |
| 7 |
Correct |
64 ms |
14740 KB |
Output is correct |
| 8 |
Correct |
65 ms |
15012 KB |
Output is correct |
| 9 |
Correct |
68 ms |
14924 KB |
Output is correct |
| 10 |
Correct |
65 ms |
14932 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
56 ms |
13144 KB |
Output is correct |
| 2 |
Correct |
57 ms |
13316 KB |
Output is correct |
| 3 |
Correct |
57 ms |
13148 KB |
Output is correct |
| 4 |
Correct |
59 ms |
13148 KB |
Output is correct |
| 5 |
Correct |
62 ms |
14680 KB |
Output is correct |
| 6 |
Correct |
54 ms |
13148 KB |
Output is correct |
| 7 |
Correct |
58 ms |
13096 KB |
Output is correct |
| 8 |
Correct |
64 ms |
14984 KB |
Output is correct |
| 9 |
Correct |
64 ms |
14684 KB |
Output is correct |
| 10 |
Correct |
65 ms |
13292 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
83 ms |
14936 KB |
Output is correct |
| 2 |
Correct |
82 ms |
15112 KB |
Output is correct |
| 3 |
Correct |
84 ms |
15184 KB |
Output is correct |
| 4 |
Correct |
82 ms |
15004 KB |
Output is correct |
| 5 |
Correct |
83 ms |
14940 KB |
Output is correct |
| 6 |
Correct |
84 ms |
15196 KB |
Output is correct |
| 7 |
Correct |
83 ms |
15220 KB |
Output is correct |
| 8 |
Correct |
82 ms |
15164 KB |
Output is correct |
| 9 |
Correct |
84 ms |
15228 KB |
Output is correct |
| 10 |
Correct |
84 ms |
15224 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2400 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2400 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
64 ms |
14676 KB |
Output is correct |
| 2 |
Correct |
74 ms |
14788 KB |
Output is correct |
| 3 |
Correct |
67 ms |
14932 KB |
Output is correct |
| 4 |
Correct |
74 ms |
15304 KB |
Output is correct |
| 5 |
Correct |
65 ms |
14804 KB |
Output is correct |
| 6 |
Correct |
69 ms |
14916 KB |
Output is correct |
| 7 |
Correct |
64 ms |
14740 KB |
Output is correct |
| 8 |
Correct |
65 ms |
15012 KB |
Output is correct |
| 9 |
Correct |
68 ms |
14924 KB |
Output is correct |
| 10 |
Correct |
65 ms |
14932 KB |
Output is correct |
| 11 |
Correct |
56 ms |
13144 KB |
Output is correct |
| 12 |
Correct |
57 ms |
13316 KB |
Output is correct |
| 13 |
Correct |
57 ms |
13148 KB |
Output is correct |
| 14 |
Correct |
59 ms |
13148 KB |
Output is correct |
| 15 |
Correct |
62 ms |
14680 KB |
Output is correct |
| 16 |
Correct |
54 ms |
13148 KB |
Output is correct |
| 17 |
Correct |
58 ms |
13096 KB |
Output is correct |
| 18 |
Correct |
64 ms |
14984 KB |
Output is correct |
| 19 |
Correct |
64 ms |
14684 KB |
Output is correct |
| 20 |
Correct |
65 ms |
13292 KB |
Output is correct |
| 21 |
Correct |
83 ms |
14936 KB |
Output is correct |
| 22 |
Correct |
82 ms |
15112 KB |
Output is correct |
| 23 |
Correct |
84 ms |
15184 KB |
Output is correct |
| 24 |
Correct |
82 ms |
15004 KB |
Output is correct |
| 25 |
Correct |
83 ms |
14940 KB |
Output is correct |
| 26 |
Correct |
84 ms |
15196 KB |
Output is correct |
| 27 |
Correct |
83 ms |
15220 KB |
Output is correct |
| 28 |
Correct |
82 ms |
15164 KB |
Output is correct |
| 29 |
Correct |
84 ms |
15228 KB |
Output is correct |
| 30 |
Correct |
84 ms |
15224 KB |
Output is correct |
| 31 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 41 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 42 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 43 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 44 |
Correct |
1 ms |
2400 KB |
Output is correct |
| 45 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 46 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 47 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 48 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 49 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 50 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 51 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 52 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 53 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 54 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 55 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 56 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 57 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 58 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 59 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 60 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 61 |
Correct |
114 ms |
15108 KB |
Output is correct |
| 62 |
Correct |
114 ms |
15236 KB |
Output is correct |
| 63 |
Correct |
95 ms |
14940 KB |
Output is correct |
| 64 |
Correct |
115 ms |
15188 KB |
Output is correct |
| 65 |
Correct |
116 ms |
15188 KB |
Output is correct |
| 66 |
Correct |
117 ms |
15176 KB |
Output is correct |
| 67 |
Correct |
114 ms |
15100 KB |
Output is correct |
| 68 |
Correct |
85 ms |
15124 KB |
Output is correct |
| 69 |
Correct |
81 ms |
14932 KB |
Output is correct |
| 70 |
Correct |
81 ms |
14940 KB |
Output is correct |
