oj.uz

Submission #407055

# Submission time Handle Problem Language Result Execution time Memory
407055 2021-05-18T12:20:25 Z azberjibiou Candies (JOI18_candies) C++17
100 / 100
 165 ms 12608 KB 
#include <bits/stdc++.h>
#define gibon ios::sync_with_stdio(false); cin.tie(0);
#define bp __builtin_popcount
#define fir first
#define sec second
#define pii pair<int, int>
#define pll pair<ll, ll>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
typedef long long ll;
using namespace std;
int dx[4]={0, 1, 0, -1}, dy[4]={1, 0, -1 , 0};
const int mxN=202000;
const int mxM=104;
const int mxK=1000000;
const ll MOD=1000000007;
const ll INF=100000000000001;
typedef struct rng{
    int l, r;
    ll val;
}rng;
typedef struct cmp1{
    bool operator()(rng a, rng b)
    {
        return a.val<b.val;
    }
}cmp1;
int N;
ll A[mxN];
priority_queue <rng, vector<rng>, cmp1> pq;
int par[mxN];
rng uf[mxN];
ll ans;
int L, R;
int findpar(int a)
{
    return par[a]==a ? a : (par[a]=findpar(par[a]));
}
int main()
{
    gibon
    cin >> N;
    for(int i=1;i<=N;i++)   cin >> A[i];
    L=0, R=N+1;
    for(int i=1;i<=N;i++)
    {
        par[i]=i;
        uf[i].l=uf[i].r=i, uf[i].val=A[i];
        pq.push(uf[i]);
    }
    for(int i=1;i<=(N+1)/2;i++)
    {
        while(true)
        {
            rng now=pq.top();
            pq.pop();
            int ncur=findpar(now.l);
            if(uf[ncur].l!=now.l || uf[ncur].r!=now.r || uf[ncur].l<=L || uf[ncur].r>=R)  continue;
            ans+=now.val;
            uf[ncur].val*=-1;
            cout << ans << '\n';
            if(i==(N+1)/2)  break;
            if(uf[ncur].l==L+1)
            {
                L=uf[findpar(uf[ncur].r+1)].r;
                break;
            }
            if(uf[ncur].r==R-1)
            {
                R=uf[findpar(uf[ncur].l-1)].l;
                break;
            }
            int lc=findpar(uf[ncur].l-1);
            par[lc]=ncur;
            uf[ncur].val+=uf[lc].val;
            uf[ncur].l=uf[lc].l;
            int rc=findpar(uf[ncur].r+1);
            par[rc]=ncur;
            uf[ncur].val+=uf[rc].val;
            uf[ncur].r=uf[rc].r;
            pq.push(uf[ncur]);
            break;
        }
    }
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 460 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 460 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 2 ms 460 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 2 ms 460 KB Output is correct
8 Correct 2 ms 472 KB Output is correct
9 Correct 2 ms 460 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 460 KB Output is correct
13 Correct 2 ms 460 KB Output is correct
14 Correct 2 ms 460 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 2 ms 460 KB Output is correct
17 Correct 2 ms 460 KB Output is correct
18 Correct 2 ms 460 KB Output is correct
19 Correct 2 ms 472 KB Output is correct
20 Correct 2 ms 476 KB Output is correct

Subtask #2
92.0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 460 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 2 ms 460 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 2 ms 460 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 2 ms 460 KB Output is correct
8 Correct 2 ms 472 KB Output is correct
9 Correct 2 ms 460 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 460 KB Output is correct
13 Correct 2 ms 460 KB Output is correct
14 Correct 2 ms 460 KB Output is correct
15 Correct 2 ms 460 KB Output is correct
16 Correct 2 ms 460 KB Output is correct
17 Correct 2 ms 460 KB Output is correct
18 Correct 2 ms 460 KB Output is correct
19 Correct 2 ms 472 KB Output is correct
20 Correct 2 ms 476 KB Output is correct
21 Correct 144 ms 12404 KB Output is correct
22 Correct 139 ms 12480 KB Output is correct
23 Correct 133 ms 12484 KB Output is correct
24 Correct 97 ms 12236 KB Output is correct
25 Correct 95 ms 12304 KB Output is correct
26 Correct 94 ms 12320 KB Output is correct
27 Correct 94 ms 12480 KB Output is correct
28 Correct 102 ms 12460 KB Output is correct
29 Correct 96 ms 12516 KB Output is correct
30 Correct 97 ms 12592 KB Output is correct
31 Correct 98 ms 12496 KB Output is correct
32 Correct 123 ms 12460 KB Output is correct
33 Correct 107 ms 12204 KB Output is correct
34 Correct 114 ms 12324 KB Output is correct
35 Correct 123 ms 12308 KB Output is correct
36 Correct 136 ms 12464 KB Output is correct
37 Correct 130 ms 12464 KB Output is correct
38 Correct 165 ms 12424 KB Output is correct
39 Correct 103 ms 12336 KB Output is correct
40 Correct 93 ms 12264 KB Output is correct
41 Correct 93 ms 12304 KB Output is correct
42 Correct 94 ms 12456 KB Output is correct
43 Correct 94 ms 12516 KB Output is correct
44 Correct 100 ms 12452 KB Output is correct
45 Correct 98 ms 12404 KB Output is correct
46 Correct 98 ms 12460 KB Output is correct
47 Correct 100 ms 12608 KB Output is correct
48 Correct 122 ms 12216 KB Output is correct
49 Correct 106 ms 12208 KB Output is correct
50 Correct 123 ms 12304 KB Output is correct