Submission #638217

#	Time	Username	Problem	Language	Result	Execution time	Memory
638217		iee	Preokret (COCI19_preokret)	C++17	50 / 50	1 ms	300 KiB

preokret

// iee
#include <algorithm>
#include <iostream>
#include <cstring>
#include <cstdio>
#include <vector>
#include <set>
#include <map>

#define rep(i, a, b) for (auto i = (a); i <= (b); ++i)
#define per(i, a, b) for (auto i = (a); i >= (b); --i)
#define fi first
#define se second
using ll = long long;
using ull = unsigned long long;
using namespace std;
void work(int);

template <class T> void read(T &x) {
  x = 0; int f = 1, ch = getchar();
  while (!isdigit(ch)) { if (ch == '-') f = -1; ch = getchar(); }
  while (isdigit(ch)) x = x * 10 + (ch - '0'), ch = getchar();
  x *= f;
}

int main() {
  int TT = 1; // cin >> TT;
  rep(CAS, 1, TT)
    work(CAS);
  return 0;
}
int n, a[255];
void work(int CASE) {
  cin >> n;
  rep(i, 1, n) {
    cin >> a[i];
  }
  int x = 0, y = 0, same = 1, mx = 0;
  for (int i = 1, j = 1; i <= n; i = j) {
    j = i;
    int d = x - y;
    while (j <= n && a[j] == a[i]) {
      if (a[j] == 1) ++x;
      else if (a[j] == 2) ++y;
      if (x == y) ++same;
      ++j;
    }
    int nd = x - y;
    if (d > 0 && nd < 0 || d < 0 && nd > 0) mx = max(mx, j - i);
  }
  cout << x << ' ' << y << '\n' << same << '\n' << mx << '\n';
}

Compilation message (stderr)

preokret.cpp: In function 'void work(int)':
preokret.cpp:49:15: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   49 |     if (d > 0 && nd < 0 || d < 0 && nd > 0) mx = max(mx, j - i);
      |         ~~~~~~^~~~~~~~~

• Subtask 1: 50 / 50