oj.uz

Submission #128446

# Submission time Handle Problem Language Result Execution time Memory
128446 2019-07-10T23:18:01 Z dragonslayerit Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
15 / 100
 136 ms 163064 KB 
#include <cstdio>
#include <algorithm>
#include <vector>

const int INF=1e9+7;

int dp[401][401][401][3];

std::vector<int> where[3];

char rgy[]="RGY";

int N;
char str[405];

int main(){
  scanf("%d %s",&N,str);
  for(int i=0;i<N;i++){
    where[std::find(rgy,rgy+3,str[i])-rgy].push_back(i+1);
  }
  for(int a=0;a<=where[0].size();a++){
    for(int b=0;b<=where[1].size();b++){
      for(int c=0;c<=where[2].size();c++){
	std::fill(dp[a][b][c],dp[a][b][c]+3,(a+b+c==0)?0:INF);
	if(a) dp[a][b][c][0]=std::max(0,a+b+c-where[0][a-1])+std::min(dp[a-1][b][c][1],dp[a-1][b][c][2]);
	if(b) dp[a][b][c][1]=std::max(0,a+b+c-where[1][b-1])+std::min(dp[a][b-1][c][2],dp[a][b-1][c][0]);
	if(c) dp[a][b][c][2]=std::max(0,a+b+c-where[2][c-1])+std::min(dp[a][b][c-1][0],dp[a][b][c-1][1]);
	//auto x=dp[a][b][c];
	//printf("dp[%d][%d][%d]: %d %d %d\n",a,b,c,x[0],x[1],x[2]);
      }
    }
  }
  auto x=dp[where[0].size()][where[1].size()][where[2].size()];
  int ans=*std::min_element(x,x+3);
  printf("%d\n",ans<INF?ans:-1);
  return 0;
}

Compilation message

joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:21:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int a=0;a<=where[0].size();a++){
               ~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:22:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int b=0;b<=where[1].size();b++){
                 ~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int c=0;c<=where[2].size();c++){
                   ~^~~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:17:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %s",&N,str);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Incorrect 2 ms 524 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #2
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Incorrect 2 ms 524 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 136 ms 163016 KB Output is correct
3 Correct 123 ms 162296 KB Output is correct
4 Correct 123 ms 162936 KB Output is correct
5 Correct 123 ms 163064 KB Output is correct
6 Correct 123 ms 162936 KB Output is correct
7 Correct 123 ms 162168 KB Output is correct
8 Correct 123 ms 162204 KB Output is correct
9 Correct 123 ms 161340 KB Output is correct
10 Correct 125 ms 163036 KB Output is correct
11 Correct 123 ms 162940 KB Output is correct
12 Correct 35 ms 44024 KB Output is correct
13 Correct 59 ms 77168 KB Output is correct
14 Correct 84 ms 111352 KB Output is correct
15 Correct 124 ms 162956 KB Output is correct
16 Correct 123 ms 162936 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Incorrect 2 ms 524 KB Output isn't correct
12 Halted 0 ms 0 KB -