Submission #261314

#	Time	Username	Problem	Language	Result	Execution time	Memory
261314		Valera_Grinenko	JJOOII 2 (JOI20_ho_t2)	C++17	100 / 100	8 ms	2052 KiB

ho_t2

#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization ("unroll-loops")
#include <iostream>
#include <fstream>
#include <algorithm>
#include <vector>
#include <set>
#include <stack>
#include <map>
#include <iomanip>
#include <cmath>
#include <queue>
#include <bitset>
#include <numeric>
#include <array>
#include <cstring>
#include <random>
#include <chrono>
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define make_unique(x) sort(all((x))); (x).resize(unique(all((x))) - (x).begin())
typedef long long ll;
typedef long double ld;
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int main() {

  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

  int n = 0, k = 0;

  string s;

  cin >> n >> k >> s;

  int ans = -1;

  vector<int> pos[3];

  for(int i = 0; i < n; i++) {
    if(s[i] == 'J') pos[0].pb(i);
    else if(s[i] == 'O') pos[1].pb(i);
    else pos[2].pb(i);
  }

  int jp = 0, op = 0, ip = 0;

  for(; jp < pos[0].size(); jp++) {
    if(jp + k - 1 >= pos[0].size()) break;
    while(op < pos[1].size() && pos[1][op] < pos[0][jp + k - 1]) op++;
    if(op == pos[1].size() || op > pos[0][jp + k - 1]) break;
    if(op + k - 1 >= pos[1].size()) break;
    while(ip < pos[2].size() && pos[2][ip] < pos[1][op + k - 1]) ip++;
    if(ip + k - 1 >= pos[2].size()) break;
    ans = (ans == -1 ? pos[2][ip + k - 1] - pos[0][jp] + 1 - 3 * k : min(ans, pos[2][ip + k - 1] - pos[0][jp] + 1 - 3 * k));
  }

  cout << ans;

  return 0;
}
/*

*/

Compilation message (stderr)

ho_t2.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("unroll-loops")
 
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:53:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(; jp < pos[0].size(); jp++) {
         ~~~^~~~~~~~~~~~~~~
ho_t2.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(jp + k - 1 >= pos[0].size()) break;
        ~~~~~~~~~~~^~~~~~~~~~~~~~~~
ho_t2.cpp:55:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(op < pos[1].size() && pos[1][op] < pos[0][jp + k - 1]) op++;
           ~~~^~~~~~~~~~~~~~~
ho_t2.cpp:56:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(op == pos[1].size() || op > pos[0][jp + k - 1]) break;
        ~~~^~~~~~~~~~~~~~~~
ho_t2.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(op + k - 1 >= pos[1].size()) break;
        ~~~~~~~~~~~^~~~~~~~~~~~~~~~
ho_t2.cpp:58:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(ip < pos[2].size() && pos[2][ip] < pos[1][op + k - 1]) ip++;
           ~~~^~~~~~~~~~~~~~~
ho_t2.cpp:59:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(ip + k - 1 >= pos[2].size()) break;
        ~~~~~~~~~~~^~~~~~~~~~~~~~~~

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