Submission #978928

#	Time	Username	Problem	Language	Result	Execution time	Memory
978928		irmuun	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	0 / 100	1078 ms	348 KiB

joi2019_ho_t3

#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    int n;
    cin>>n;
    string s;
    cin>>s;
    string t=s;
    sort(all(t));
    vector<char>ch={'R','G','Y'};
    int ans=1e9;
    do{
        bool ok=true;
        for(int i=1;i<n;i++){
            if(t[i-1]==t[i]){
                ok=false;
            }
        }
        if(!ok) continue;
        int cur=0;
        for(char c:ch){
            vector<int>v,u;
            for(int i=0;i<n;i++){
                if(s[i]==c) v.pb(i);
                if(t[i]==c) u.pb(i);
            }
            for(int i=0;i<v.size();i++){
                cur+=abs(v[i]-u[i]);
            }
        }
        ans=min(ans,cur/2);
    }while(next_permutation(all(t)));
    if(ans==1e9) ans=-1;
    cout<<ans;
}

Compilation message (stderr)

joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:37:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |             for(int i=0;i<v.size();i++){
      |                         ~^~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 55
• Subtask 3: 0 / 15
• Subtask 4: 0 / 25