Submission #955236

#	Time	Username	Problem	Language	Result	Execution time	Memory
955236		Dennis_Jason	JJOOII 2 (JOI20_ho_t2)	C++14	0 / 100	1 ms	348 KiB

ho_t2

#include <bits/stdc++.h>
#define NMAX 200001
#define pb push_back
#define MOD 1000000007
#define nl '\n'
#define INF 0x3f3f3f3f
#define int long long
using namespace std;
ifstream fin("aib.in");
ofstream fout("aib.out");
int n,k;
string s;

/// op1:delete s[0]
/// op2:delete s[s.size()-1]
/// op3:delete between (0,s.size()-1)
signed main() {

    cin>>n>>k;
    cin>>s;
    int cnt=0;
    int cntJ=0,cntO=0,cntI=0;
    for(int i=0;i<s.size();++i)
    {
        ///verificam daca putem folosi J gasit sau nu
        if(s[i]=='J' && cntJ<k)
        {
            cntJ++;
        }
        else if(s[i]=='J'&& cntJ>=1 && cntI==0)
        {
            cnt++;
        }

        ///verificam daca putem folosi O gasit sau nu
        if(s[i]=='O' && cntJ>=k && cntO<k)
        {
            cntO++;
        }
        else if(s[i]=='O' && cntJ>=1 && cntI==0)
        {
            cnt++;
        }

        //verificam daca putem folosi I gasit
        if(s[i]=='I' && cntI<k && cntO>=k)
        {
            cntI++;
        }
        else if(s[i]=='I' && cntJ>=1 && cntI<k)
        {
            cnt++;
        }
    }
    if(cntI!=k ||cntO!=k ||cntJ!=k)
        cout<<-1;
    else
        cout<<cnt;


    return 0;

}

Compilation message (stderr)

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:23:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(int i=0;i<s.size();++i)
      |                 ~^~~~~~~~~

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