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답안 #544864

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
544864 2022-04-02T23:40:18 Z Deepesson Growing Vegetable is Fun 3 (JOI19_ho_t3) C++17
60 / 100
 7 ms 9464 KB 
#include <bits/stdc++.h>
#define MAX 65
///Uma dp meio complicadinha
///A ideia eh a seguinte:
///1-> Quantos valores azuis restam
///2-> Quantos valores vermelhos restam
///3-> Quantos valores verdes restam
///4-> (Para remover) coordenada atual
///Por enquanto sera O(N^4), mas poderemos otimizar depois
bool existe[MAX][MAX][MAX][MAX][4];
int tab[MAX][MAX][MAX][MAX][4];
std::vector<int> cords[3];
int N;
int array[MAX]={};
int getval(char ch){
    if(ch=='R')return 0;else if(ch=='G')return 1;return 2;
}
int proximo(int red,int blue,int green){
    int min=N;
    if(red!=cords[0].size())min=std::min(min,cords[0][red]);
    if(green!=cords[1].size())min=std::min(min,cords[1][green]);
    if(blue!=cords[2].size())min=std::min(min,cords[2][blue]);
    return min;
}
int dp(int pos,int red,int blue,int green,int last){
    if(pos==N)return 0;
    if(existe[pos][red][blue][green][last])return tab[pos][red][blue][green][last];
    existe[pos][red][blue][green][last]=true;
    ///Prossegue com o valor
    int ans=1e9;
    if(array[pos]!=last){
        switch(array[pos]){
            case 0:
            ans=dp(proximo(red+1,blue,green),red+1,blue,green,array[pos]);break;
            case 1:
            ans=dp(proximo(red,blue,green+1),red,blue,green+1,array[pos]);break;
            case 2:
            ans=dp(proximo(red,blue+1,green),red,blue+1,green,array[pos]);break;
        }
    }
    ///Faz a troca magica
    if(last!=0&&red!=cords[0].size()&&array[pos]!=0){
        int truecusto=0;
        int destino = cords[0][red];
        for(int i=0;i!=red;++i)if(cords[0][i]>=pos&&cords[0][i]<=destino)++truecusto;
        for(int i=0;i!=green;++i)if(cords[1][i]>=pos&&cords[1][i]<=destino)++truecusto;
        for(int i=0;i!=blue;++i)if(cords[2][i]>=pos&&cords[2][i]<=destino)++truecusto;
        ans=std::min(ans,cords[0][red]-pos-truecusto + (dp(pos,red+1,blue,green,0)));
    }
    if(last!=1&&green!=cords[1].size()&&array[pos]!=1){
        int truecusto=0;
        int destino = cords[1][green];
        for(int i=0;i!=red;++i)if(cords[0][i]>=pos&&cords[0][i]<=destino)++truecusto;
        for(int i=0;i!=green;++i)if(cords[1][i]>=pos&&cords[1][i]<=destino)++truecusto;
        for(int i=0;i!=blue;++i)if(cords[2][i]>=pos&&cords[2][i]<=destino)++truecusto;
        ans=std::min(ans,cords[1][green]-pos-truecusto + (dp(pos,red,blue,green+1,1)));
    }
    if(last!=2&&blue!=cords[2].size()&&array[pos]!=2){
        int truecusto=0;
        int destino = cords[2][blue];
        for(int i=0;i!=red;++i)if(cords[0][i]>=pos&&cords[0][i]<=destino)++truecusto;
        for(int i=0;i!=green;++i)if(cords[1][i]>=pos&&cords[1][i]<=destino)++truecusto;
        for(int i=0;i!=blue;++i)if(cords[2][i]>=pos&&cords[2][i]<=destino)++truecusto;
        ans=std::min(ans,cords[2][blue]-pos-truecusto + (dp(pos,red,blue+1,green,2)));
    }
    return tab[pos][red][blue][green][last]=ans;
}
int main()
{
    std::cin>>N;
    std::string s;
    std::cin>>s;
    for(int i=0;i!=s.size();++i){
        int u = getval(s[i]);
        cords[u].push_back(i);
        array[i]=u;
    }
    int ans=dp(0,0,0,0,3);
    if(ans==1e9)ans=-1;
    std::cout<<ans<<"\n";
}

Compilation message

joi2019_ho_t3.cpp: In function 'int proximo(int, int, int)':
joi2019_ho_t3.cpp:20:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     if(red!=cords[0].size())min=std::min(min,cords[0][red]);
      |        ~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:21:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     if(green!=cords[1].size())min=std::min(min,cords[1][green]);
      |        ~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:22:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     if(blue!=cords[2].size())min=std::min(min,cords[2][blue]);
      |        ~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp: In function 'int dp(int, int, int, int, int)':
joi2019_ho_t3.cpp:42:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     if(last!=0&&red!=cords[0].size()&&array[pos]!=0){
      |                 ~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     if(last!=1&&green!=cords[1].size()&&array[pos]!=1){
      |                 ~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:58:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     if(last!=2&&blue!=cords[2].size()&&array[pos]!=2){
      |                 ~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:73:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i=0;i!=s.size();++i){
      |                 ~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 852 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 0 ms 340 KB Output is correct

Subtask #2
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 852 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 5 ms 6356 KB Output is correct
19 Correct 4 ms 5460 KB Output is correct
20 Correct 4 ms 5332 KB Output is correct
21 Correct 5 ms 6484 KB Output is correct
22 Correct 3 ms 4692 KB Output is correct
23 Correct 4 ms 5588 KB Output is correct
24 Correct 3 ms 3796 KB Output is correct
25 Correct 1 ms 724 KB Output is correct
26 Correct 1 ms 852 KB Output is correct
27 Correct 5 ms 7764 KB Output is correct
28 Correct 2 ms 1620 KB Output is correct
29 Correct 3 ms 4692 KB Output is correct
30 Correct 2 ms 1620 KB Output is correct
31 Correct 6 ms 8404 KB Output is correct
32 Correct 7 ms 9464 KB Output is correct
33 Correct 1 ms 2260 KB Output is correct
34 Correct 2 ms 3156 KB Output is correct
35 Correct 3 ms 3924 KB Output is correct
36 Correct 4 ms 4564 KB Output is correct
37 Correct 3 ms 4052 KB Output is correct
38 Correct 4 ms 3156 KB Output is correct
39 Correct 4 ms 4948 KB Output is correct
40 Correct 1 ms 596 KB Output is correct
41 Correct 1 ms 1748 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Runtime error 6 ms 340 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 852 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 5 ms 6356 KB Output is correct
19 Correct 4 ms 5460 KB Output is correct
20 Correct 4 ms 5332 KB Output is correct
21 Correct 5 ms 6484 KB Output is correct
22 Correct 3 ms 4692 KB Output is correct
23 Correct 4 ms 5588 KB Output is correct
24 Correct 3 ms 3796 KB Output is correct
25 Correct 1 ms 724 KB Output is correct
26 Correct 1 ms 852 KB Output is correct
27 Correct 5 ms 7764 KB Output is correct
28 Correct 2 ms 1620 KB Output is correct
29 Correct 3 ms 4692 KB Output is correct
30 Correct 2 ms 1620 KB Output is correct
31 Correct 6 ms 8404 KB Output is correct
32 Correct 7 ms 9464 KB Output is correct
33 Correct 1 ms 2260 KB Output is correct
34 Correct 2 ms 3156 KB Output is correct
35 Correct 3 ms 3924 KB Output is correct
36 Correct 4 ms 4564 KB Output is correct
37 Correct 3 ms 4052 KB Output is correct
38 Correct 4 ms 3156 KB Output is correct
39 Correct 4 ms 4948 KB Output is correct
40 Correct 1 ms 596 KB Output is correct
41 Correct 1 ms 1748 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Runtime error 6 ms 340 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -