oj.uz

Submission #61713

# Submission time Handle Problem Language Result Execution time Memory
61713 2018-07-26T12:02:42 Z mAng0 Candies (JOI18_candies) C++17
100 / 100
 687 ms 26840 KB 
#include<bits/stdc++.h>
using namespace std;

using interval = pair<int, int>;
#define s first
#define e second

map<interval, long long> mp;

using qtype = pair<long long, interval>;
priority_queue<qtype> pq;

int main(){
    int n;
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        long long x;
        scanf("%lld",&x);
        mp[{i, i}] = x;
        pq.push({x, {i, i}});
    }
    long long ans = 0;
    for(int i=0;i<(n+1)/2;i++){
        while(true){
            auto it = mp.find(pq.top().second);
            if(it == mp.end()){
                pq.pop();
            }else{
                if((*it).second == pq.top().first){
                    break;
                }else{
                    pq.pop();
                }
            }
        }
        //printf("hi: %d - %d, %lld\n", pq.top().second.s, pq.top().second.e, pq.top().first);
        qtype top = pq.top(); pq.pop();
        ans += top.first;
        interval tt = top.second;
        interval newtt = tt;
        long long newval = -top.first;
        long long vall = top.first;
        auto pit = mp.find(tt);
        auto nit = pit; nit++;
        int all_ok = 0;
        if(pit != mp.begin()){
            pit--;
            all_ok++;
            newtt.s = (*pit).first.s;
            newval += (*pit).second;
            //printf("del: %d - %d, %lld\n", (*pit).first.s, (*pit).first.e, (*pit).second);
            mp.erase(pit);
        }
        if(nit != mp.end()){
            all_ok++;
            newtt.e = (*nit).first.e;
            newval += (*nit).second;
            //printf("del: %d - %d, %lld\n", (*nit).first.s, (*nit).first.e, (*nit).second);
            mp.erase(nit);
        }
        //printf("del: %d - %d, %lld\n", tt.s, tt.e, vall);
        mp.erase(tt);
        if(all_ok == 2){
            mp[newtt] = newval;
            //printf("add: %d - %d, %lld\n", newtt.s, newtt.e, newval);
            pq.push({newval, newtt});
        }
        printf("%lld\n", ans);
    }
}

Compilation message

candies.cpp: In function 'int main()':
candies.cpp:42:19: warning: unused variable 'vall' [-Wunused-variable]
         long long vall = top.first;
                   ^~~~
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:18:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&x);
         ~~~~~^~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 504 KB Output is correct
2 Correct 6 ms 612 KB Output is correct
3 Correct 6 ms 612 KB Output is correct
4 Correct 6 ms 808 KB Output is correct
5 Correct 7 ms 808 KB Output is correct
6 Correct 6 ms 812 KB Output is correct
7 Correct 6 ms 860 KB Output is correct
8 Correct 5 ms 884 KB Output is correct
9 Correct 6 ms 900 KB Output is correct
10 Correct 6 ms 1052 KB Output is correct
11 Correct 6 ms 1052 KB Output is correct
12 Correct 5 ms 1052 KB Output is correct
13 Correct 5 ms 1052 KB Output is correct
14 Correct 5 ms 1052 KB Output is correct
15 Correct 5 ms 1072 KB Output is correct
16 Correct 6 ms 1092 KB Output is correct
17 Correct 6 ms 1240 KB Output is correct
18 Correct 5 ms 1240 KB Output is correct
19 Correct 5 ms 1240 KB Output is correct
20 Correct 5 ms 1240 KB Output is correct

Subtask #2
92.0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 504 KB Output is correct
2 Correct 6 ms 612 KB Output is correct
3 Correct 6 ms 612 KB Output is correct
4 Correct 6 ms 808 KB Output is correct
5 Correct 7 ms 808 KB Output is correct
6 Correct 6 ms 812 KB Output is correct
7 Correct 6 ms 860 KB Output is correct
8 Correct 5 ms 884 KB Output is correct
9 Correct 6 ms 900 KB Output is correct
10 Correct 6 ms 1052 KB Output is correct
11 Correct 6 ms 1052 KB Output is correct
12 Correct 5 ms 1052 KB Output is correct
13 Correct 5 ms 1052 KB Output is correct
14 Correct 5 ms 1052 KB Output is correct
15 Correct 5 ms 1072 KB Output is correct
16 Correct 6 ms 1092 KB Output is correct
17 Correct 6 ms 1240 KB Output is correct
18 Correct 5 ms 1240 KB Output is correct
19 Correct 5 ms 1240 KB Output is correct
20 Correct 5 ms 1240 KB Output is correct
21 Correct 671 ms 20112 KB Output is correct
22 Correct 578 ms 21988 KB Output is correct
23 Correct 673 ms 24052 KB Output is correct
24 Correct 384 ms 25760 KB Output is correct
25 Correct 358 ms 26496 KB Output is correct
26 Correct 341 ms 26668 KB Output is correct
27 Correct 382 ms 26668 KB Output is correct
28 Correct 382 ms 26668 KB Output is correct
29 Correct 370 ms 26668 KB Output is correct
30 Correct 359 ms 26668 KB Output is correct
31 Correct 367 ms 26668 KB Output is correct
32 Correct 378 ms 26668 KB Output is correct
33 Correct 464 ms 26668 KB Output is correct
34 Correct 477 ms 26668 KB Output is correct
35 Correct 433 ms 26668 KB Output is correct
36 Correct 687 ms 26668 KB Output is correct
37 Correct 587 ms 26668 KB Output is correct
38 Correct 568 ms 26668 KB Output is correct
39 Correct 391 ms 26668 KB Output is correct
40 Correct 333 ms 26728 KB Output is correct
41 Correct 346 ms 26728 KB Output is correct
42 Correct 369 ms 26728 KB Output is correct
43 Correct 345 ms 26728 KB Output is correct
44 Correct 359 ms 26728 KB Output is correct
45 Correct 381 ms 26728 KB Output is correct
46 Correct 490 ms 26840 KB Output is correct
47 Correct 454 ms 26840 KB Output is correct
48 Correct 482 ms 26840 KB Output is correct
49 Correct 534 ms 26840 KB Output is correct
50 Correct 516 ms 26840 KB Output is correct