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Submission #499269

# Submission time Handle Problem Language Result Execution time Memory
499269 2021-12-27T17:34:21 Z tphuc2908 Rabbit Carrot (LMIO19_triusis) C++14
100 / 100
 31 ms 5356 KB 
#include <bits/stdc++.h>

using namespace std;
#define rep(i,x,y) for(int i = x; i <= y; ++i)
#define repi(i,x,y) for(int i = x; i >= y; --i)
#define fi first
#define se second
#define ci(x) int x; cin >> x
#define cii(x,y) int x, y; cin >> x >> y
#define ciii(x,y,z) int x,y,z; cin >> x >> y >> z
#define all(x) x.begin(), x.end()
#define pb push_back
#define mp make_pair
//#define int long long
typedef long long ll;
const int N = 2e5 + 5;
const int mod = 1e9 + 7;
const int mod1 = 1e9 + 9;
const int pi = 23;
const ll inf = 1e18 + 5;

void read_file(){
    freopen("text.inp", "r", stdin);
//    freopen("SEARCHING.INP" , "r", stdin);
//    freopen("SEARCHING.OUT", "w", stdout);
}

/*
    dp[bit][i] is the minimal time to get at i with i is in the subset bit
    then we will binary search the initial velocity
    as time = d1 / v1 + d2 / (v2 *m) + ... + dn / (vn * m^(n-1))
    so if we increase or decrease v, time will decrease or increase
*/

int n, m;
ll h[N];

void inp(){
    cin >> n >> m;
    h[0] = (1ll)*n*m;
    rep(i,1,n){
        ci(x);
        h[i] += (1ll)*(n-i)*m + x;
    }
}

ll dp[N];

void process(){
    rep(i,1,n)
        dp[i] = inf;
    dp[0] = -inf;
    repi(i,n,1){
        if(h[i] > h[0]) continue;
        int pos = upper_bound(dp + 1, dp + n + 1, h[i]) - dp;
        dp[pos] = h[i];
    }
    repi(i,n,0)
        if(dp[i]!=inf){
            cout << n - i;
            return;
        }
}

int main()
{
    //read_file();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    inp();
    process();
    return 0;
}

Compilation message

triusis.cpp: In function 'void read_file()':
triusis.cpp:23:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |     freopen("text.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 1 ms 208 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 1 ms 208 KB Output is correct
17 Correct 0 ms 320 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 0 ms 208 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 2 ms 336 KB Output is correct
30 Correct 1 ms 328 KB Output is correct
31 Correct 1 ms 372 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 320 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 2 ms 336 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 372 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 208 KB Output is correct
19 Correct 0 ms 208 KB Output is correct
20 Correct 0 ms 208 KB Output is correct
21 Correct 0 ms 324 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 0 ms 208 KB Output is correct
24 Correct 0 ms 208 KB Output is correct
25 Correct 0 ms 208 KB Output is correct
26 Correct 0 ms 208 KB Output is correct
27 Correct 0 ms 208 KB Output is correct
28 Correct 0 ms 208 KB Output is correct
29 Correct 1 ms 208 KB Output is correct
30 Correct 0 ms 208 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 208 KB Output is correct
33 Correct 1 ms 208 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 464 KB Output is correct
36 Correct 1 ms 336 KB Output is correct
37 Correct 1 ms 336 KB Output is correct
38 Correct 1 ms 336 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 336 KB Output is correct
41 Correct 1 ms 336 KB Output is correct
42 Correct 1 ms 336 KB Output is correct
43 Correct 1 ms 336 KB Output is correct

Subtask #4
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 1 ms 328 KB Output is correct
25 Correct 1 ms 372 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 208 KB Output is correct
29 Correct 0 ms 208 KB Output is correct
30 Correct 0 ms 208 KB Output is correct
31 Correct 0 ms 324 KB Output is correct
32 Correct 1 ms 208 KB Output is correct
33 Correct 0 ms 208 KB Output is correct
34 Correct 0 ms 208 KB Output is correct
35 Correct 0 ms 208 KB Output is correct
36 Correct 0 ms 208 KB Output is correct
37 Correct 0 ms 208 KB Output is correct
38 Correct 0 ms 208 KB Output is correct
39 Correct 1 ms 208 KB Output is correct
40 Correct 0 ms 208 KB Output is correct
41 Correct 1 ms 336 KB Output is correct
42 Correct 1 ms 208 KB Output is correct
43 Correct 1 ms 208 KB Output is correct
44 Correct 19 ms 3812 KB Output is correct
45 Correct 23 ms 5268 KB Output is correct
46 Correct 27 ms 5316 KB Output is correct
47 Correct 26 ms 5356 KB Output is correct
48 Correct 31 ms 4296 KB Output is correct
49 Correct 26 ms 4564 KB Output is correct
50 Correct 30 ms 5280 KB Output is correct
51 Correct 31 ms 5320 KB Output is correct
52 Correct 23 ms 4212 KB Output is correct
53 Correct 16 ms 4672 KB Output is correct
54 Correct 25 ms 4428 KB Output is correct
55 Correct 29 ms 4420 KB Output is correct