oj.uz

Submission #442230

# Submission time Handle Problem Language Result Execution time Memory
442230 2021-07-07T10:13:52 Z cpp219 Candies (JOI18_candies) C++14
100 / 100
 632 ms 28916 KB 
#pragma GCC optimization "O2"
#pragma GCC optimization "unroll-loop"
#pragma GCC target ("avx2")

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define fs first
#define sc second
using namespace std;
const ll N = 2e5 + 3;
const ll Log2 = 20;
const ll inf = 1e16 + 7;
typedef pair<ll,ll> LL;

ll n,a[N],val[N];

set<LL> s;
set<ll> num;


int main(){
    ios_base::sync_with_stdio(0); cin.tie(0), cout.tie(0);
    #define task "test"
    if (fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    cin>>n; val[0] = val[n + 1] = -inf; num.insert(0); num.insert(n + 1);
    for (ll i = 1;i <= n;i++) cin>>a[i],s.insert({a[i],i}),val[i] = a[i],num.insert(i);
    ll cur = 0,p;
    for (ll i = 1;i <= (n + 1)/2;i++){
        LL t = *s.rbegin(); s.erase(prev(s.end()));
        cur += t.fs; ll now = t.sc; num.erase(now);
        auto it1 = num.lower_bound(now),it2 = num.upper_bound(now);
        ll p = now,q = now;
        if (it1 != num.begin()) p = *prev(it1);
        if (it2 != num.end()) q = *it2;
        s.erase({val[p],p}); s.erase({val[q],q});
        val[p] += val[q] - t.fs; num.erase(q); s.insert({val[p],p});
        cout<<cur<<"\n";
    }
}

Compilation message

candies.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization "O2"
      | 
candies.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
candies.cpp: In function 'int main()':
candies.cpp:31:16: warning: unused variable 'p' [-Wunused-variable]
   31 |     ll cur = 0,p;
      |                ^
candies.cpp:26:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
candies.cpp:27:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 588 KB Output is correct
2 Correct 3 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 3 ms 588 KB Output is correct
5 Correct 3 ms 588 KB Output is correct
6 Correct 2 ms 588 KB Output is correct
7 Correct 3 ms 588 KB Output is correct
8 Correct 3 ms 588 KB Output is correct
9 Correct 2 ms 588 KB Output is correct
10 Correct 2 ms 588 KB Output is correct
11 Correct 3 ms 588 KB Output is correct
12 Correct 3 ms 588 KB Output is correct
13 Correct 2 ms 588 KB Output is correct
14 Correct 3 ms 588 KB Output is correct
15 Correct 3 ms 588 KB Output is correct
16 Correct 2 ms 588 KB Output is correct
17 Correct 3 ms 588 KB Output is correct
18 Correct 3 ms 588 KB Output is correct
19 Correct 2 ms 588 KB Output is correct
20 Correct 2 ms 588 KB Output is correct

Subtask #2
92.0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 588 KB Output is correct
2 Correct 3 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 3 ms 588 KB Output is correct
5 Correct 3 ms 588 KB Output is correct
6 Correct 2 ms 588 KB Output is correct
7 Correct 3 ms 588 KB Output is correct
8 Correct 3 ms 588 KB Output is correct
9 Correct 2 ms 588 KB Output is correct
10 Correct 2 ms 588 KB Output is correct
11 Correct 3 ms 588 KB Output is correct
12 Correct 3 ms 588 KB Output is correct
13 Correct 2 ms 588 KB Output is correct
14 Correct 3 ms 588 KB Output is correct
15 Correct 3 ms 588 KB Output is correct
16 Correct 2 ms 588 KB Output is correct
17 Correct 3 ms 588 KB Output is correct
18 Correct 3 ms 588 KB Output is correct
19 Correct 2 ms 588 KB Output is correct
20 Correct 2 ms 588 KB Output is correct
21 Correct 627 ms 28788 KB Output is correct
22 Correct 618 ms 28740 KB Output is correct
23 Correct 618 ms 28740 KB Output is correct
24 Correct 276 ms 28612 KB Output is correct
25 Correct 268 ms 28684 KB Output is correct
26 Correct 283 ms 28612 KB Output is correct
27 Correct 286 ms 28716 KB Output is correct
28 Correct 294 ms 28916 KB Output is correct
29 Correct 292 ms 28764 KB Output is correct
30 Correct 316 ms 28900 KB Output is correct
31 Correct 308 ms 28728 KB Output is correct
32 Correct 313 ms 28904 KB Output is correct
33 Correct 423 ms 28496 KB Output is correct
34 Correct 465 ms 28576 KB Output is correct
35 Correct 413 ms 28612 KB Output is correct
36 Correct 586 ms 28740 KB Output is correct
37 Correct 596 ms 28704 KB Output is correct
38 Correct 632 ms 28768 KB Output is correct
39 Correct 264 ms 28620 KB Output is correct
40 Correct 277 ms 28612 KB Output is correct
41 Correct 266 ms 28612 KB Output is correct
42 Correct 285 ms 28740 KB Output is correct
43 Correct 282 ms 28712 KB Output is correct
44 Correct 282 ms 28740 KB Output is correct
45 Correct 309 ms 28680 KB Output is correct
46 Correct 303 ms 28732 KB Output is correct
47 Correct 306 ms 28856 KB Output is correct
48 Correct 409 ms 28612 KB Output is correct
49 Correct 423 ms 28480 KB Output is correct
50 Correct 455 ms 28740 KB Output is correct