oj.uz

Submission #40869

# Submission time Handle Problem Language Result Execution time Memory
40869 2018-02-09T15:15:51 Z XmtosX Baloni (COCI15_baloni) C++14
100 / 100
 1531 ms 104344 KB 
#include <bits/stdc++.h>
using namespace std;
int n,h,ans,maxx;
set <int> s[1000006];
set <int> ::iterator it;
int main()
{
    scanf("%d",&n);
    for (int i=0;i<n;i++)
    {
        scanf("%d",&h);
        s[h].insert(i);
        maxx=max(maxx,h);
    }
    for (int i=0;i<=maxx;i++)
        s[i].insert(n);
    for (int i=maxx;i>0;i--)
    {
        while (s[i].size()>1)
        {
            ans++;
            int x= (*s[i].begin());
            s[i].erase(s[i].begin());
            int a=i-1;
            while ((it=s[a].lower_bound(x))!=(--s[a].end()))
            {
                x= (*it);
                s[a].erase(it);
                a--;
            }
        }
    }
    printf("%d",ans);
    return 0;
}

Compilation message

baloni.cpp: In function 'int main()':
baloni.cpp:8:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
baloni.cpp:11:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&h);
                       ^

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 47352 KB Output is correct
2 Correct 45 ms 47460 KB Output is correct
3 Correct 45 ms 47520 KB Output is correct
4 Correct 44 ms 47664 KB Output is correct
5 Correct 1169 ms 88320 KB Output is correct
6 Correct 1531 ms 96464 KB Output is correct
7 Correct 1154 ms 96464 KB Output is correct
8 Correct 1108 ms 96464 KB Output is correct
9 Correct 1151 ms 99640 KB Output is correct
10 Correct 1305 ms 104344 KB Output is correct