Submission #890775

#	Time	Username	Problem	Language	Result	Execution time	Memory
890775		UmairAhmadMirza	Miners (IOI07_miners)	C++17	45 / 100	1576 ms	604 KiB

miners

#include <bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	string s;
	cin>>s;
	int st=0;
	string a="",b="";
	int ans=0;
	while(st<(1<<n)){
		a="",b="";
		for (int i = 0; i < n; ++i){
			if(st&(1<<i))
				a+=s[i];
			else
				b+=s[i];
		}
		int mx1=0,mx2=0;
		set<char> uni;
		for (int i = 0; i < a.length(); ++i)
		{
			uni.insert(a[i]);
			mx1+=int(uni.size());
			if(i>=2 && a[i]!=a[i-2] && a[i-2]!=a[i-1])
				uni.erase(a[i-2]);
		}
		uni.clear();
		for (int i = 0; i < b.length(); ++i)
		{
			uni.insert(b[i]);
			mx2+=int(uni.size());
			if(i>=2 && b[i]!=b[i-2] && b[i-2]!=b[i-1])
				uni.erase(b[i-2]);
		}
		ans=max(ans,mx1+mx2);
		st++;
	}
	cout<<ans<<endl; 
	return 0;
}

Compilation message (stderr)

miners.cpp: In function 'int main()':
miners.cpp:21:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |   for (int i = 0; i < a.length(); ++i)
      |                   ~~^~~~~~~~~~~~
miners.cpp:29:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   for (int i = 0; i < b.length(); ++i)
      |                   ~~^~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 0 / 7
• Subtask 7: 0 / 8
• Subtask 8: 0 / 8
• Subtask 9: 0 / 8
• Subtask 10: 0 / 8
• Subtask 11: 0 / 8
• Subtask 12: 0 / 8