Submission #701988

#	Time	Username	Problem	Language	Result	Execution time	Memory
701988		huomark1001	JJOOII 2 (JOI20_ho_t2)	C++17	0 / 100	1 ms	340 KiB

ho_t2

#include<bits/stdc++.h>
#include<random>
using namespace std;

template<typename T> void _do(T x){cerr<<x<<"\n";}
template<typename T,typename ...U> void _do(T x,U ...y){cerr<<x<<", ";_do(y...);}
#define dbg(...) cerr<<#__VA_ARGS__<<" = ";_do(__VA_ARGS__);

#define float double
#define ss(n) fixed<<setprecision(n) 
#define ll long long
#define int ll
#define IO ios::sync_with_stdio(false);cin.tie(0);
#define ld long double
#define pb push_back
#define pii pair<int,int>
#define rep(i,a) for(int i=1;i<=a;i++)
#define rep0(i,a) for(int i=0;i<a;i++)
#define F first
#define S second
#define uni(a) a.resize(distance(a.begin(),unique(a.begin(),a.end())));
#define unisort(a) sort(a.begin(),a.end()); uni(a);

ll gcd(ll a,ll b){if(b==0) return a; return gcd(b,a%b);}

const ld pi=3.14159265358979323846264338327950288419716939931;
const int lar=3e18;
const int mol1=1e9+7;
const int mol2=998244353;
const int MX=3e5;

void solve()
{
    int n,k;
    cin>>n>>k;
    string a;
    cin>>a;
    vector<int>a1,a2,a3;
    rep0(i,a.size()){
        if(a[i]=='J') a1.pb(i);
        if(a[i]=='O') a2.pb(i);
        if(a[i]=='I') a3.pb(i);
    }
    int ans=lar;
    bool ok=0;
    int l1=0,l2=0,l3=0;
    while(a1.size()-1-l1+1>=k){
        int bb=l1+k-1;
        int pos=a1[bb];
        while(l2+k-1<=a2.size()-1&&a2[l2]<pos){
            l2++;
        }
        int ppos=a2[l2+k-1];
        while(l3+k-1<=a3.size()-1&&a3[l3]<ppos) l3++;
        if(a2[l2]>pos&&a3[l3]>ppos){
            ok=1;
            ans=min(ans,a3[l3+k-1]-a1[l1]+1-k*3);
        }
        l1++;
    }
    if(ok) cout<<ans<<"\n";
    else cout<<-1<<"\n";
}           

signed main()
{
    IO
    solve();
    return 0;
}

Compilation message (stderr)

ho_t2.cpp: In function 'void solve()':
ho_t2.cpp:18:32: 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]
   18 | #define rep0(i,a) for(int i=0;i<a;i++)
......
   39 |     rep0(i,a.size()){
      |          ~~~~~~~~~~             
ho_t2.cpp:39:5: note: in expansion of macro 'rep0'
   39 |     rep0(i,a.size()){
      |     ^~~~
ho_t2.cpp:47:27: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'long long int' [-Wsign-compare]
   47 |     while(a1.size()-1-l1+1>=k){
      |           ~~~~~~~~~~~~~~~~^~~
ho_t2.cpp:50:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         while(l2+k-1<=a2.size()-1&&a2[l2]<pos){
      |               ~~~~~~^~~~~~~~~~~~~
ho_t2.cpp:54:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         while(l3+k-1<=a3.size()-1&&a3[l3]<ppos) l3++;
      |               ~~~~~~^~~~~~~~~~~~~

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