Submission #781641

#	Time	Username	Problem	Language	Result	Execution time	Memory
781641		vjudge1	JJOOII 2 (JOI20_ho_t2)	C++17	100 / 100	5 ms	2396 KiB

ho_t2

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);
#define OYY 1000000005
#define mod 998244353
//#define mid (start+end)/2
deque <int> j,o,p;

int32_t main(){
    faster
    int n,k;cin>>n>>k;
    string s;cin>>s;
    for(int i=0;i<n;i++){
        if(s[i]=='J'){
            j.push_back(i);
        }
        else if(s[i]=='O'){
            o.push_back(i);
        }
        else p.push_back(i);
    }
    //////////////////////////////////////////
    int cev=OYY;
    for(int i=k-1;i<j.size();i++){
        int deg=j[i-k+1];
        int gec=j[i];
        while(!o.empty() && o.front()<gec)o.pop_front();
        if(o.size()<k)continue;

       // cout<<o[k-1]<<endl;
        int m=o[k-1];
        while(!p.empty() && p.front()<m)p.pop_front();
        if(p.size()<k)continue;

        int b=p[k-1];
        int tut=b-deg+1-3*k;
        //cout<<b<<" "<<tut<<endl;
        cev=min(cev,tut);
    }
    if(cev==OYY)cev=-1;
    cout<<cev<<'\n';
    return 0;
}

Compilation message (stderr)

ho_t2.cpp: In function 'int32_t main()':
ho_t2.cpp:25:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::deque<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(int i=k-1;i<j.size();i++){
      |                   ~^~~~~~~~~
ho_t2.cpp:29:20: warning: comparison of integer expressions of different signedness: 'std::deque<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   29 |         if(o.size()<k)continue;
      |            ~~~~~~~~^~
ho_t2.cpp:34:20: warning: comparison of integer expressions of different signedness: 'std::deque<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   34 |         if(p.size()<k)continue;
      |            ~~~~~~~~^~

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