Submission #245184

#	Time	Username	Problem	Language	Result	Execution time	Memory
245184		uacoder123	JJOOII 2 (JOI20_ho_t2)	C++14	0 / 100	5 ms	384 KiB

ho_t2

#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
 
typedef long long int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  lli test=1;
  for(;test>0;--test)
  {
    lli n,k,ans;
    string s;
    cin>>n>>k>>s;
    ans=n;
    vi j,o,i;
    for(lli i1=0;i1<s.size();++i1)
    {
      if(s[i1]=='J')
        j.pb(i1);
      else if(s[i1]=='O')
        o.pb(i1);
      else
        i.pb(i1);
    }
    lli l=0;
    for(lli i1=0;i1<j.size();++i1)
    {
      lli pans=0;
      if(j.size()-i1>=k)
        pans+=j[i1+k-1]-j[i1]+1-k;
      else
        continue;
      l=j[i1+k-1]+1;
      lli it1=lower_bound(all(o),l)-o.begin();
      if(o.size()-it1>=k)
        pans+=o[it1+k-1]-o[it1]+1-k;
      else
        continue;
      l=o[it1+k-1]+1;
      int it2=lower_bound(all(i),l)-i.begin();
      if(i.size()-it2>=k)
        pans+=i[it2+k-1]-i[it2]+1-k;
      else
        continue;
      ans=min(ans,pans);
    }
    if(ans==n)
      cout<<"-1"<<endl;
    else
    cout<<ans<<endl;
  }
  return(0);
}

Compilation message (stderr)

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(lli i1=0;i1<s.size();++i1)
                  ~~^~~~~~~~~
ho_t2.cpp:40:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(lli i1=0;i1<j.size();++i1)
                  ~~^~~~~~~~~
ho_t2.cpp:43:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if(j.size()-i1>=k)
          ~~~~~~~~~~~^~~
ho_t2.cpp:49:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if(o.size()-it1>=k)
          ~~~~~~~~~~~~^~~
ho_t2.cpp:55:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if(i.size()-it2>=k)
          ~~~~~~~~~~~~^~~

• Subtask 1: 0 / 1
• Subtask 2: 0 / 12
• Subtask 3: 0 / 87