Submission #560631

#	Time	Username	Problem	Language	Result	Execution time	Memory
560631		groshi	JJOOII 2 (JOI20_ho_t2)	C++17	100 / 100	13 ms	2028 KiB

ho_t2

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
vector<int> a,b,c;
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int n,k;
    cin>>n>>k;
    string s;
    cin>>s;
    for(int i=0;i<s.length();i++)
    {
        if(s[i]=='J')
            a.push_back(i);
        if(s[i]=='O')
            b.push_back(i);
        if(s[i]=='I')
            c.push_back(i);
    }
    int wynik=1000000000;
    for(int i=0;i<a.size();i++)
    {
        int nas=i+k-1;
        if(nas>=a.size())
            break;
        int gdzie1=lower_bound(b.begin(),b.end(),a[nas])-b.begin()+k-1;
        if(gdzie1>=b.size())
            continue;
       // cout<<"zyje\n";
        int gdzie2=lower_bound(c.begin(),c.end(),b[gdzie1])-c.begin()+k-1;
        if(gdzie2>=c.size())
            continue;
        //cout<<"zyje2\n";
        //cout<<a[i]<<" "<<a[nas]<<" "<<b[gdzie1]<<" "<<b[gdzie1-k+1]<<"\n";
        wynik=min(wynik,c[gdzie2]-a[i]+1-3*k);
    }
    if(wynik==1000000000)
        cout<<"-1";
    else cout<<wynik;
    return 0;
}

Compilation message (stderr)

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:15:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(int i=0;i<s.length();i++)
      |                 ~^~~~~~~~~~~
ho_t2.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(int i=0;i<a.size();i++)
      |                 ~^~~~~~~~~
ho_t2.cpp:28:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         if(nas>=a.size())
      |            ~~~^~~~~~~~~~
ho_t2.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         if(gdzie1>=b.size())
      |            ~~~~~~^~~~~~~~~~
ho_t2.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |         if(gdzie2>=c.size())
      |            ~~~~~~^~~~~~~~~~

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