oj.uz

Submission #890775

# Submission time Handle Problem Language Result Execution time Memory
890775 2023-12-22T02:54:09 Z UmairAhmadMirza Miners (IOI07_miners) C++17
45 / 100
 1500 ms 604 KB 
#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

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
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 432 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 344 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 298 ms 404 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 447 ms 408 KB Output is correct

Subtask #6
0 / 7.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1544 ms 348 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1518 ms 344 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 199 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1576 ms 600 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #12
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 604 KB Output isn't correct
2 Halted 0 ms 0 KB -