Submission #682757

#	Time	Username	Problem	Language	Result	Execution time	Memory
682757		Paul_Liao_1457	JJOOII 2 (JOI20_ho_t2)	C++17	100 / 100	10 ms	2020 KiB

ho_t2

//記得跳題
#include<iostream>
#include<array>
#include<vector>
#include<string>
#include<algorithm>
#include<set>
#include<queue>
#include<stack>
#include<math.h>
#include<map>
#include<unordered_map>
#include<cstring>
#include<iomanip>
#include<bitset>
#include<tuple>
 
#define ll long long
#define LL __int128_t
#define DB double
#define FOR(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a,b) for(int i=a;i>=b;i--)
#define pb push_back
#define mp make_pair
#define INF (ll)(1e9)
#define MOD (ll)(1e9+7)
#define F first
#define S second
#define endl "\n"
#define AC ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
 
using namespace std;

template<class T> using PQ=priority_queue<T,vector<T>,less<T> >;

void file(){
    freopen("/Users/liaoyunyang/Desktop/meta_in.txt","r",stdin);
    freopen("/Users/liaoyunyang/Desktop/meta_out.txt","w",stdout);
}

int a[200005],b[200005],init[200005],pre[200005],suf[200005];
map<int,int> ans;

signed main(){
    AC;
    vector<int> J,O,I;
    int n,k; cin>>n>>k;
    string s; cin>>s;
    FOR(i,0,n){
        if(s[i]=='J') J.pb(i);
        else if(s[i]=='O') O.pb(i);
        else I.pb(i);
    }
    if(J.size()<k||O.size()<k||I.size()<k){
        cout<<-1<<endl; return 0;
    }
    int ans=-1;
    for(int i=0;i<J.size()-k+1;i++){
        int l=J[i],li=J[i+k-1];
        int tmp=(int)(lower_bound(O.begin(),O.end(),li)-O.begin());
        if(tmp+k>O.size()){
            cout<<ans<<endl; return 0;
        }
        int oi=O[tmp+k-1];
        int tmp2=(int)(lower_bound(I.begin(),I.end(),oi)-I.begin());
        if(tmp2+k>I.size()){
            cout<<ans<<endl; return 0;
        }
        int r=I[tmp2+k-1];
        if(ans==-1){
            ans=r-l+1-3*k;
        }
        else{
            ans=min(ans,r-l+1-3*k);
        }
    }
    cout<<ans<<endl;
}


/*

 */

Compilation message (stderr)

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:54:16: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   54 |     if(J.size()<k||O.size()<k||I.size()<k){
      |        ~~~~~~~~^~
ho_t2.cpp:54:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   54 |     if(J.size()<k||O.size()<k||I.size()<k){
      |                    ~~~~~~~~^~
ho_t2.cpp:54:40: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   54 |     if(J.size()<k||O.size()<k||I.size()<k){
      |                                ~~~~~~~~^~
ho_t2.cpp:58:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     for(int i=0;i<J.size()-k+1;i++){
      |                 ~^~~~~~~~~~~~~
ho_t2.cpp:61:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         if(tmp+k>O.size()){
      |            ~~~~~^~~~~~~~~
ho_t2.cpp:66:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |         if(tmp2+k>I.size()){
      |            ~~~~~~^~~~~~~~~
ho_t2.cpp: In function 'void file()':
ho_t2.cpp:37:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |     freopen("/Users/liaoyunyang/Desktop/meta_in.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ho_t2.cpp:38:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     freopen("/Users/liaoyunyang/Desktop/meta_out.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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