Submission #569554

#	Time	Username	Problem	Language	Result	Execution time	Memory
569554		esomer	Miners (IOI07_miners)	C++17	45 / 100	1579 ms	740 KiB

miners

#include<bits/stdc++.h>

using namespace std;

#define endl "\n"

const int MOD = 1e9 + 7;

void solve(){
    int n; cin >> n;
    string s; cin >> s;
    int best = 0;
    for(int i = 0; i < (1 << (s.size())); i++){
        string s1;
        string s2;
        for(int j = 0; j < s.size(); j++){
            if(i & (1 << j)) s1 += s[j];
            else s2 += s[j];
        }
        int ans = 0;
        for(int i = 0; i < s1.size(); i++){
            bool one = 0;
            bool two = 0;
            bool three = 0;
            for(int j = i; j >= 0 && j >= i - 2; j--){
                if(s1[j] == 'F'){
                    if(!one){
                        ans++;
                        one = 1;
                    }
                }else if(s1[j] == 'M'){
                    if(!two){
                        ans++;
                        two = 1;
                    }
                }else if(!three){
                    ans++;
                    three = 1;
                }
            }
        }
        for(int i = 0; i < s2.size(); i++){
            bool one = 0;
            bool two = 0;
            bool three = 0;
            for(int j = i; j >= 0 && j >= i - 2; j--){
                if(s2[j] == 'F'){
                    if(!one){
                        ans++;
                        one = 1;
                    }
                }else if(s2[j] == 'M'){
                    if(!two){
                        ans++;
                        two = 1;
                    }
                }else if(!three){
                    ans++;
                    three = 1;
                }
            }
        }
        best = max(best, ans);
    }
    cout << best << endl;
}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    //int tt; cin >> tt;
    int tt = 1;
    for(int i = 1; i <= tt; i++) solve();

    return 0;
}

Compilation message (stderr)

miners.cpp: In function 'void solve()':
miners.cpp:16:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |         for(int j = 0; j < s.size(); j++){
      |                        ~~^~~~~~~~~~
miners.cpp:21:26: 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 < s1.size(); i++){
      |                        ~~^~~~~~~~~~~
miners.cpp:42:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |         for(int i = 0; i < s2.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