oj.uz

Submission #127690

# Submission time Handle Problem Language Result Execution time Memory
127690 2019-07-10T01:32:33 Z arnold518 Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
15 / 100
 122 ms 163140 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 400;
const int INF = 400000;

int N, ans;
char S[MAXN+10];

int dp[MAXN+10][MAXN+10][MAXN+10][3];
int rcnt[MAXN+10], gcnt[MAXN+10], ycnt[MAXN+10];
vector<int> rpos, gpos, ypos;

int main()
{
    int i, j;

    scanf("%d%s", &N, S+1);
    for(i=1; i<=N; i++)
    {
        rcnt[i]=rcnt[i-1]; gcnt[i]=gcnt[i-1]; ycnt[i]=ycnt[i-1];
        if(S[i]=='R') rpos.push_back(i), rcnt[i]++;
        if(S[i]=='G') gpos.push_back(i), gcnt[i]++;
        if(S[i]=='Y') ypos.push_back(i), ycnt[i]++;
        //printf("%d %d %d\n", rcnt[i], gcnt[i], ycnt[i]);
    }

    for(int r=0; r<=rpos.size(); r++)
    {
        for(int g=0; g<=gpos.size(); g++)
        {
            for(int y=0; y<=ypos.size(); y++)
            {
                dp[r][g][y][0]=dp[r][g][y][1]=dp[r][g][y][2]=INF;
                if(r==0 && g==0 && y==0)
                {
                    dp[r][g][y][0]=dp[r][g][y][1]=dp[r][g][y][2]=0;
                    continue;
                }
                int pos=r+g+y;
                if(r!=0) dp[r][g][y][0]=min(dp[r-1][g][y][1], dp[r-1][g][y][2])+abs(rcnt[rpos[r-1]]-rcnt[pos])+abs(gcnt[rpos[r-1]]-gcnt[pos])+abs(ycnt[rpos[r-1]]-ycnt[pos]);
                if(g!=0) dp[r][g][y][1]=min(dp[r][g-1][y][0], dp[r][g-1][y][2])+abs(rcnt[gpos[g-1]]-rcnt[pos])+abs(gcnt[gpos[g-1]]-gcnt[pos])+abs(ycnt[gpos[g-1]]-ycnt[pos]);
                if(y!=0) dp[r][g][y][2]=min(dp[r][g][y-1][0], dp[r][g][y-1][1])+abs(rcnt[ypos[y-1]]-rcnt[pos])+abs(gcnt[ypos[y-1]]-gcnt[pos])+abs(ycnt[ypos[y-1]]-ycnt[pos]);
                //printf("%d %d %d : %d %d %d\n", r, g, y, dp[r][g][y][0], dp[r][g][y][1], dp[r][g][y][2]);
            }
        }
    }
    ans=min(min(dp[rpos.size()][gpos.size()][ypos.size()][0], dp[rpos.size()][gpos.size()][ypos.size()][1]), dp[rpos.size()][gpos.size()][ypos.size()][2]);
    if(ans>=INF) ans=-1;
    else ans/=2;
    printf("%d", ans);
}

Compilation message

joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int r=0; r<=rpos.size(); r++)
                  ~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int g=0; g<=gpos.size(); g++)
                      ~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:36:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int y=0; y<=ypos.size(); y++)
                          ~^~~~~~~~~~~~~
joi2019_ho_t3.cpp:20:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
joi2019_ho_t3.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%s", &N, S+1);
     ~~~~~^~~~~~~~~~~~~~~~~

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 256 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 376 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Incorrect 2 ms 508 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 256 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 376 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Incorrect 2 ms 508 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 122 ms 163000 KB Output is correct
3 Correct 119 ms 162268 KB Output is correct
4 Correct 120 ms 162984 KB Output is correct
5 Correct 119 ms 163064 KB Output is correct
6 Correct 121 ms 163140 KB Output is correct
7 Correct 120 ms 162140 KB Output is correct
8 Correct 119 ms 162168 KB Output is correct
9 Correct 118 ms 161400 KB Output is correct
10 Correct 122 ms 163036 KB Output is correct
11 Correct 120 ms 163064 KB Output is correct
12 Correct 35 ms 44024 KB Output is correct
13 Correct 58 ms 77180 KB Output is correct
14 Correct 83 ms 111336 KB Output is correct
15 Correct 121 ms 163036 KB Output is correct
16 Correct 119 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 256 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 376 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Incorrect 2 ms 508 KB Output isn't correct
12 Halted 0 ms 0 KB -