oj.uz

Submission #45074

# Submission time Handle Problem Language Result Execution time Memory
45074 2018-04-11T06:53:39 Z RayaBurong25_1 Candies (JOI18_candies) C++17
100 / 100
 734 ms 86316 KB 
#include <stdio.h>
#include <map>
#include <set>
long long A[200005];
std::map<int, long long> V;
std::set<std::pair<long long, int> > PQ;
int cnt[200005];
// bool operator<(std::pair<long long, int> a, std::pair<long long, int> b)
// {
//     return (a.first < b.first || (a.first == b.first && a.second < b.second));
// }
int main()
{
    int N;
    scanf("%d", &N);
    int i;
    for (i = 0; i < N; i++)
    {
        scanf("%lld", &A[i]);
        V.insert({i, A[i]});
        PQ.insert({-A[i], i});
        cnt[i] = 1;
    }
    long long sum = 0, r, diff;
    std::map<int, long long>::iterator p, q;
    std::set<std::pair<long long, int> >::iterator it;
    int s, inc, sumcnt = 0;
    for (i = 1; i <= (N + 1)/2;)
    {
        // for (p = V.begin(); p != V.end(); p++)
            // printf("V %d %lld %d\n", p->first, p->second, cnt[p->first]);
        // for (it = PQ.begin(); it != PQ.end(); it++)
            // printf("PQ %lld %d %d\n", (*it).first, (*it).second, cnt[it->second]);
        r = -PQ.begin()->first;
        s = PQ.begin()->second;
        if (cnt[s] == 0)
            r -= 1e18;
        sum += r;
        sumcnt += cnt[s];
        inc = -cnt[s];
        diff = 0;
        PQ.erase(PQ.begin());
        p = V.find(s);
        if (p != V.begin())
        {
            p--;
            diff += p->second;
            inc += cnt[p->first];
            s = p->first;
            PQ.erase({-p->second, p->first});
            p = V.erase(p);
        }
        diff -= p->second;
        p = V.erase(p);
        if (p != V.end())
        {
            diff += p->second;
            inc += cnt[p->first];
            PQ.erase({-p->second, p->first});
            p = V.erase(p);
        }
        cnt[s] = inc;
        if (inc == 0)
        {
            V.insert({s, diff});
            PQ.insert({1e18 - diff, s});
        }
        else
        {
            V.insert({s, diff});
            PQ.insert({-diff, s});
        }
        // printf("sumcnt %d\n", sumcnt);
        if (sumcnt == i)
        {
            printf("%lld\n", sum);
            i++;
        }
    }
}

Compilation message

candies.cpp: In function 'int main()':
candies.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
candies.cpp:19:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", &A[i]);
         ~~~~~^~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 612 KB Output is correct
2 Correct 4 ms 776 KB Output is correct
3 Correct 4 ms 908 KB Output is correct
4 Correct 5 ms 908 KB Output is correct
5 Correct 4 ms 908 KB Output is correct
6 Correct 4 ms 1056 KB Output is correct
7 Correct 4 ms 1120 KB Output is correct
8 Correct 4 ms 1120 KB Output is correct
9 Correct 5 ms 1120 KB Output is correct
10 Correct 4 ms 1120 KB Output is correct
11 Correct 4 ms 1204 KB Output is correct
12 Correct 4 ms 1204 KB Output is correct
13 Correct 4 ms 1204 KB Output is correct
14 Correct 4 ms 1204 KB Output is correct
15 Correct 4 ms 1232 KB Output is correct
16 Correct 4 ms 1252 KB Output is correct
17 Correct 4 ms 1272 KB Output is correct
18 Correct 7 ms 1288 KB Output is correct
19 Correct 4 ms 1312 KB Output is correct
20 Correct 5 ms 1380 KB Output is correct

Subtask #2
92.0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 612 KB Output is correct
2 Correct 4 ms 776 KB Output is correct
3 Correct 4 ms 908 KB Output is correct
4 Correct 5 ms 908 KB Output is correct
5 Correct 4 ms 908 KB Output is correct
6 Correct 4 ms 1056 KB Output is correct
7 Correct 4 ms 1120 KB Output is correct
8 Correct 4 ms 1120 KB Output is correct
9 Correct 5 ms 1120 KB Output is correct
10 Correct 4 ms 1120 KB Output is correct
11 Correct 4 ms 1204 KB Output is correct
12 Correct 4 ms 1204 KB Output is correct
13 Correct 4 ms 1204 KB Output is correct
14 Correct 4 ms 1204 KB Output is correct
15 Correct 4 ms 1232 KB Output is correct
16 Correct 4 ms 1252 KB Output is correct
17 Correct 4 ms 1272 KB Output is correct
18 Correct 7 ms 1288 KB Output is correct
19 Correct 4 ms 1312 KB Output is correct
20 Correct 5 ms 1380 KB Output is correct
21 Correct 734 ms 31928 KB Output is correct
22 Correct 733 ms 33792 KB Output is correct
23 Correct 726 ms 35976 KB Output is correct
24 Correct 314 ms 37528 KB Output is correct
25 Correct 334 ms 39428 KB Output is correct
26 Correct 321 ms 41052 KB Output is correct
27 Correct 326 ms 43044 KB Output is correct
28 Correct 376 ms 45036 KB Output is correct
29 Correct 339 ms 46956 KB Output is correct
30 Correct 351 ms 49136 KB Output is correct
31 Correct 353 ms 50900 KB Output is correct
32 Correct 355 ms 52960 KB Output is correct
33 Correct 502 ms 54556 KB Output is correct
34 Correct 497 ms 56296 KB Output is correct
35 Correct 487 ms 58256 KB Output is correct
36 Correct 728 ms 60128 KB Output is correct
37 Correct 711 ms 62176 KB Output is correct
38 Correct 708 ms 64108 KB Output is correct
39 Correct 344 ms 65680 KB Output is correct
40 Correct 326 ms 67572 KB Output is correct
41 Correct 327 ms 69300 KB Output is correct
42 Correct 339 ms 71352 KB Output is correct
43 Correct 331 ms 73192 KB Output is correct
44 Correct 342 ms 75264 KB Output is correct
45 Correct 362 ms 77104 KB Output is correct
46 Correct 363 ms 79204 KB Output is correct
47 Correct 434 ms 81032 KB Output is correct
48 Correct 497 ms 82796 KB Output is correct
49 Correct 503 ms 84580 KB Output is correct
50 Correct 479 ms 86316 KB Output is correct