Submission #831475

#	Time	Username	Problem	Language	Result	Execution time	Memory
831475		OrazB	Miners (IOI07_miners)	C++14	45 / 100	1585 ms	24668 KiB

miners

#include <bits/stdc++.h>
using namespace std;
#define all(x) (x).begin(), (x).end()
#define ll long long int
#define pii pair <int, int>
#define pb push_back
#define ff first
#define ss second

const int N = 1e5+5;

int n;
string s;
int nw[26], c[N], A[3], mx = 0, vis[N];
pair<int,pii> dp[N][5];

int T(char c){
	if (c == 'M') return 0;
	if (c == 'B') return 1;
	return 2;
}

int F(string str){
	int ans = 0;
	for (int i = 0; i < str.size(); i++){
		for (int j = i; j > max(i-3, -1); j--){
			A[T(str[j])] = 1;	
		}
		ans += A[0]+A[1]+A[2];
		A[0] = A[1] = A[2] = 0;
	}
	return ans;
}

void bit(int x){
	if (x == n){
		string a = "", b = "";
		for (int i = 0; i < n; i++){
			if (c[i]) a += s[i];
			else b += s[i];
		}
		mx = max(mx, F(a)+F(b));
		return;
	}
	for (int i = 0; i < 2; i++){
		c[x] = i;
		bit(x+1);
	}
}

int main ()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin >> n >> s;
	bit(0);
	cout << mx;
}	

Compilation message (stderr)

miners.cpp: In function 'int F(std::string)':
miners.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for (int i = 0; i < str.size(); 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