Submission #94828

#	Time	Username	Problem	Language	Result	Execution time	Memory
94828		SuperJava	Miners (IOI07_miners)	C++17	100 / 100	250 ms	108720 KiB

miners

//fold
#ifndef KHALIL
#include <bits/stdc++.h>
#else
#include "header.h"
#endif
#define endl '\n'
#define mp make_pair
#define tostr(x) static_cast<ostringstream&>((ostringstream()<<dec<<x)).str()
#define rep(i,begin,end) for(auto i = begin;i < end;i++)
#define repr(i,begin,end) for(auto i = begin-1;i >= end;i--)
#define pb push_back
#define sz(a) ((int)(a).size())
#define fi first
#define se second
#define abs(a) ((a) < (0) ? (-1)*(a) : (a))
#define SQ(a) ((a)*(a))
#define eqd(a,b) (abs(a-b)<1e-9)
#define X real()
#define Y imag()
using namespace std;
typedef long long ll;
typedef long double ld;
template <typename t> t in(t q){cin >> q;return q;}
template <typename T> ostream& operator<<(ostream& os, const vector<T>& v){os << "[";for (int i = 0; i < sz(v); ++i) { os << v[i]; if (i != sz(v) - 1) os << ",";}os << "]";return os;}
template <typename T, typename S>ostream& operator<<(ostream& os, const map<T, S>& v){for (auto it : v)os << "(" << it.first << ":" << it.second << ")";return os;}
template <typename T, typename S>ostream& operator<<(ostream& os, const pair<T, S>& v){os << "(" << v.first << "," << v.second << ")";return os;}
const long double PI = acosl(-1);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);}
//endfold
#define  N  (100'005)
#define MOD (1000000000l + 7l)
#define OO (1050000000)
#define OOL (1100000000000000000)

//global
int dp[16][16][N];
int n;
string s;
char arr[N];

char getScore(char i,char c){
	return __builtin_popcount(((1 << (i >> 2))|(1 << (i&3))|(1 << c))&14);
}

int solve(char m1,char m2,int done){
	if(done == n) return 0;
	if(dp[m1][m2][done] != -1) return dp[m1][m2][done];
	dp[m1][m2][done] = max(solve(((m1<<2)|arr[done])&15,m2,done+1)+getScore(m1,arr[done]),
				solve(m1,((m2<<2)|arr[done])&15,done+1)+getScore(m2,arr[done]));
	return dp[m1][m2][done];
}

map<char,char> m = {{'M',1},{'B',2},{'F',3}};

int main(){
	//fold
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cout << setprecision(10);
	//endfold
	memset(dp,-1,sizeof dp);
	cin >> n >> s;
	rep(i,0,n){
		arr[i] = m[s[i]];
	}
	cout << solve(0,0,0);
	return 0;
}

Compilation message (stderr)

miners.cpp: In function 'int solve(char, char, int)':
miners.cpp:51:10: warning: array subscript has type 'char' [-Wchar-subscripts]
  if(dp[m1][m2][done] != -1) return dp[m1][m2][done];
          ^
miners.cpp:51:14: warning: array subscript has type 'char' [-Wchar-subscripts]
  if(dp[m1][m2][done] != -1) return dp[m1][m2][done];
              ^
miners.cpp:51:41: warning: array subscript has type 'char' [-Wchar-subscripts]
  if(dp[m1][m2][done] != -1) return dp[m1][m2][done];
                                         ^
miners.cpp:51:45: warning: array subscript has type 'char' [-Wchar-subscripts]
  if(dp[m1][m2][done] != -1) return dp[m1][m2][done];
                                             ^
miners.cpp:52:7: warning: array subscript has type 'char' [-Wchar-subscripts]
  dp[m1][m2][done] = max(solve(((m1<<2)|arr[done])&15,m2,done+1)+getScore(m1,arr[done]),
       ^
miners.cpp:52:11: warning: array subscript has type 'char' [-Wchar-subscripts]
  dp[m1][m2][done] = max(solve(((m1<<2)|arr[done])&15,m2,done+1)+getScore(m1,arr[done]),
           ^
miners.cpp:54:14: warning: array subscript has type 'char' [-Wchar-subscripts]
  return dp[m1][m2][done];
              ^
miners.cpp:54:18: warning: array subscript has type 'char' [-Wchar-subscripts]
  return dp[m1][m2][done];
                  ^

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