Submission #567914

#	Time	Username	Problem	Language	Result	Execution time	Memory
567914		Baytoro	JJOOII 2 (JOI20_ho_t2)	C++17	100 / 100	13 ms	3308 KiB

ho_t2

#include <bits/stdc++.h>
using namespace std;
#define Baytoro_Mayrambekov void solve()
#define ios ios::sync_with_stdio(false); cin.tie(NULL);
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define fr first
#define sc second
#define int long long
#define endl '\n'
const int INF=1e18;
void fopn(string name){
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
int binpow(int a,int n){
	if(n==0)
		return 1;
	if(n%2==1)
		return binpow(a, n-1)*a;
	else{
		int b=binpow(a, n/2);
		return b*b;
	}
}
int k,n;
vector<int> a,b,c;
int get(int i, int j){
	int l=lower_bound(all(a),i)-a.begin();
	int u=lower_bound(all(c),j)-c.begin();
	if(l<k || c.size()-u<k)
		return INF;
	int tmp=a[l-k];
	int cmp=c[u+k-1];
	return cmp-tmp+1-k*3;
}
int m,i,j,x,y,z,cnt=0,sum=0,res=0;
Baytoro_Mayrambekov{
	int J=0,O=0,I=0;
	string s;
	cin>>n>>k>>s;
	for(i=0;i<n;i++){
		if(s[i]=='J')
			a.pb(i+1);
		else if(s[i]=='O')
			b.pb(i+1);
		else
			c.pb(i+1);
	}
	res=INF;
	for(i=0;i<b.size()-k+1;i++){
		res=min(res,get(b[i],b[i+k-1]));
	}
	if(res==INF)
		res=-1;
	cout<<res<<endl;
}
main(){
	ios;
	int T=1;
	//cin>>T;
	while(T--){
		solve();
	}
}

Compilation message (stderr)

ho_t2.cpp: In function 'long long int get(long long int, long long int)':
ho_t2.cpp:32:22: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'long long int' [-Wsign-compare]
   32 |  if(l<k || c.size()-u<k)
      |            ~~~~~~~~~~^~
ho_t2.cpp: In function 'void solve()':
ho_t2.cpp:52:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare]
   52 |  for(i=0;i<b.size()-k+1;i++){
      |          ~^~~~~~~~~~~~~
ho_t2.cpp:40:6: warning: unused variable 'J' [-Wunused-variable]
   40 |  int J=0,O=0,I=0;
      |      ^
ho_t2.cpp:40:10: warning: unused variable 'O' [-Wunused-variable]
   40 |  int J=0,O=0,I=0;
      |          ^
ho_t2.cpp:40:14: warning: unused variable 'I' [-Wunused-variable]
   40 |  int J=0,O=0,I=0;
      |              ^
ho_t2.cpp: At global scope:
ho_t2.cpp:59:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   59 | main(){
      | ^~~~
ho_t2.cpp: In function 'void fopn(std::string)':
ho_t2.cpp:14:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ho_t2.cpp:15:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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