Submission #1271509

#	Time	Username	Problem	Language	Result	Execution time	Memory
1271509		sasde	JJOOII 2 (JOI20_ho_t2)	C++20	100 / 100	3 ms	724 KiB

ho_t2

#include<bits/stdc++.h>
using namespace std;
bool M1;
#define PI 3.14159265358979323846
#define sz(a) (int)a.size()
#define all(x) x.begin(),x.end()
#define ii pair<int,int>
#define iii pair<int,ii>
#define iv pair<ii,ii>
#define se second
#define fi first
#define ffi fi.fi
#define sfi se.fi
#define sse se.se
#define fse fi.se
#define lt(i, c, d) for(int i = c; i <= d; ++i)
#define fl(i, c, d) for(int i = d; i >= c; --i)
#define pb push_back
#define emb emplace_back
#define emf emplace_front
#define em emplace
#define look_memory cerr<<abs(&M2-&M1)/1024.0/1024<<'\n'
#define look_time   cerr << "TIME : " << clock() * 0.001 << "s" <<'\n'
const int N=1e6+5,lg=30,mod=1e9+7,inf=1e9;
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int u,int v){
 return u+rd()%(v-u+1);
}
int dx[]={1,0,-1,0,1,1,-1,-1};
int dy[]={0,-1,0,1,1,-1,1,-1};
int node,k;
string s;
bool M2;
void solve(){
	cin >> node >> k >> s;
	s=" "+s;
	int ans=inf;
	int CI=0,CJ=0,CO=0;
	int J=1,O=1,I=1;
	for(int i=1;i<=node;++i){
		 CI+=(s[i]=='I');
		 while(CI-(s[I]=='I')>=k){
		 		CI-=(s[I]=='I');
		 		CO+=(s[I]=='O');
		 		++I;
		 }
		 while(CO-(s[O]=='O')>=k){
		 	CO-=(s[O]=='O');
		 	CJ+=(s[O]=='J');
		 	++O;
		 }
		 while(CJ-(s[J]=='J')>=k){
		 	CJ-=(s[J]=='J');
		 	++J;
		 }

		 if(CJ==k){
		 	ans=min(ans,i-J+1-3*k);
		 }
	}
	if(ans==inf){
		ans=-1;
	}
	cout << ans;
}
main()
{
  srand(time(0));
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    #define task "aws"
    if(fopen(task".inp","r")){
      freopen(task".inp","r",stdin);
      freopen(task".out","w",stdout);
    }
    int t=1;
 //   cin >> t;
while(t--){
    solve();cout<<'\n';
}
look_memory;
look_time;
}

Compilation message (stderr)

ho_t2.cpp:66:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   66 | main()
      | ^~~~
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:74:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |       freopen(task".inp","r",stdin);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
ho_t2.cpp:75:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |       freopen(task".out","w",stdout);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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