Submission #129178

#	Time	Username	Problem	Language	Result	Execution time	Memory
129178		Mohammad_Yasser	Lamps (JOI19_lamps)	C++14	4 / 100	16 ms	4532 KiB

lamp

#ifndef Local
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma comment(linker, "/STACK:1024000000,1024000000")
#endif

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
#define popCnt(x) (__builtin_popcountll(x))
typedef long long Long;

const int N = 1e6 + 5;

string a;
string b;

string compress(const string& s) {
  string res = s.substr(0, 1);
  for (char c : s) {
    if (c != res.back()) {
      res += c;
    }
  }
  return res;
}

int main() {
  ios_base::sync_with_stdio(0), cin.tie(0), cerr.tie(0);
#ifdef Local
  freopen("test.in", "r", stdin);
#else
#define endl '\n'
#endif

  int n;

  cin >> n >> a >> b;

  b = compress(b);
  if (b.back() == '0') {
    b.pop_back();
  }
  if (!b.empty() && b[0] == '0') {
    b = b.substr(1);
  }

  cout << (b.size() + 1) / 2 << endl;

}

Compilation message (stderr)

lamp.cpp:5:0: warning: ignoring #pragma comment  [-Wunknown-pragmas]
 #pragma comment(linker, "/STACK:1024000000,1024000000")

• Subtask 1: 0 / 6
• Subtask 2: 0 / 41
• Subtask 3: 4 / 4
• Subtask 4: 0 / 49