oj.uz

Submission #240970

# Submission time Handle Problem Language Result Execution time Memory
240970 2020-06-21T23:47:41 Z aggu_01000101 Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
60 / 100
 500 ms 1021552 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define INF 100000000
//#define int long long
#define lchild(i) (i*2 + 1)
#define rchild(i) (i*2 + 2)
#define mid(l, u) ((l+u)/2)
#define x(p) p.first
#define y(p) p.second
#define MOD 998244353
#define ordered_set tree<pair<int, int>, null_type,less<pair<int, int>>, rb_tree_tag,tree_order_statistics_node_update>
using namespace std;
int n;
const int N = 405;
int dp[N][N][N][4];
int arr[N];
vector<int> g[3];
int cmp[N][3];
int getans(int i, int aused, int bused, int prev){
    int cnt[] = {aused, bused, i - (aused + bused)};
    int tr = INF;
    for(int j = 0;j<3;j++){
        if(j==prev || g[j].size() <= cnt[j]) continue;
        int currind = g[j][cnt[j]];
        for(int k = 0;k<3;k++){
            if(k==j) continue;
            currind += max((int)0, cnt[k] - cmp[g[j][cnt[j]]][k]);
            //cout<<"equivalent at index "<<g[j][cnt[j]]<<" for type "<<k<<" is "<<cmp[g[j][cnt[j]]][k]<<endl;
        }
        cnt[j]++;
        //cout<<"putting "<<j<<", cost is "<<(currind - (i+1))<<endl;
        tr = min(tr, (currind - (i+1)) + ((i==(n-1))?0:dp[i+1][cnt[0]][cnt[1]][j]));
        cnt[j]--;
    }
    return tr;
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n;
    string s;
    cin>>s;
    for(int i = 1;i<=n;i++){
        if(s[i-1]=='R') arr[i] = 0;
        else if(s[i-1]=='G') arr[i] = 1;
        else arr[i] = 2;
        cmp[i][0] = g[0].size();
        cmp[i][1] = g[1].size();
        cmp[i][2] = g[2].size();
        g[arr[i]].push_back(i);
    }
    for(int i = 0;i<=n;i++) for(int j = 0;j<=n;j++) for(int k = 0;k<=n;k++) for(int x = 0;x<3;x++) dp[i][j][k][x] = INF;
    for(int i = n-1;i>=1;i--){
        for(int aused = n;aused>=0;aused--){
            for(int bused = n;bused >= 0 ;bused--){
                int cused = i - (aused + bused);
                int ause = INF, buse = INF, cuse = INF;
                if(aused>g[0].size() || bused>g[1].size() || cused>g[2].size()) continue;
                if(cused<0) continue;
                int currind;
                //calculate use[0]
                if(g[0].size() > aused) {
                    currind = g[0][aused] + max((int) 0, bused - cmp[g[0][aused]][1]) +
                              max((int) 0, cused - cmp[g[0][aused]][2]);
                    ause = (currind - (i + 1)) + ((i == (n - 1)) ? 0 : dp[i + 1][aused + 1][bused][0]);
                }
                //calculate buse
                if(g[1].size() > bused) {
                    currind = g[1][bused] + max((int) 0, aused - cmp[g[1][bused]][0]) +
                              max((int) 0, cused - cmp[g[1][bused]][2]);
                    buse = (currind - (i + 1)) + ((i == (n - 1)) ? 0 : dp[i + 1][aused][bused + 1][1]);
                }
                //calculate cuse
                if(g[2].size() > cused) {
                    currind = g[2][cused] + max((int) 0, aused - cmp[g[2][cused]][0]) +
                              max((int) 0, bused - cmp[g[2][cused]][1]);
                    cuse = (currind - (i + 1)) + ((i == (n - 1)) ? 0 : dp[i + 1][aused][bused][2]);
                }

                dp[i][aused][bused][0] = min(buse, cuse);
                dp[i][aused][bused][1] = min(ause, cuse);
                dp[i][aused][bused][2] = min(buse, ause);
            }
        }
    }
    int ans = getans(0, 0, 0, 4);
    if(ans>=INF) ans = -1;
    cout<<ans<<"\n";
}
//2^(2k - 1) - 2^(k-1)
/*
4 4
RGWR
GRRG
WGGW
WWWR

5 5
RGRGW
GRRGW
WGGWR
RWRGW
RGWGW

20
YYGYYYGGGGRGYYGRGRYG
 */

Compilation message

joi2019_ho_t3.cpp: In function 'int getans(int, int, int, int)':
joi2019_ho_t3.cpp:24:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(j==prev || g[j].size() <= cnt[j]) continue;
                       ~~~~~~~~~~~~^~~~~~~~~
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:60:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(aused>g[0].size() || bused>g[1].size() || cused>g[2].size()) continue;
                    ~~~~~^~~~~~~~~~~~
joi2019_ho_t3.cpp:60:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(aused>g[0].size() || bused>g[1].size() || cused>g[2].size()) continue;
                                         ~~~~~^~~~~~~~~~~~
joi2019_ho_t3.cpp:60:67: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(aused>g[0].size() || bused>g[1].size() || cused>g[2].size()) continue;
                                                              ~~~~~^~~~~~~~~~~~
joi2019_ho_t3.cpp:64:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(g[0].size() > aused) {
                    ~~~~~~~~~~~~^~~~~~~
joi2019_ho_t3.cpp:70:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(g[1].size() > bused) {
                    ~~~~~~~~~~~~^~~~~~~
joi2019_ho_t3.cpp:76:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if(g[2].size() > cused) {
                    ~~~~~~~~~~~~^~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 896 KB Output is correct
5 Correct 5 ms 1408 KB Output is correct
6 Correct 5 ms 1536 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 5 ms 1536 KB Output is correct
9 Correct 5 ms 1536 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1536 KB Output is correct
12 Correct 5 ms 1536 KB Output is correct
13 Correct 5 ms 1536 KB Output is correct
14 Correct 5 ms 1280 KB Output is correct
15 Correct 5 ms 1536 KB Output is correct
16 Correct 5 ms 1536 KB Output is correct
17 Correct 5 ms 1280 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 896 KB Output is correct
5 Correct 5 ms 1408 KB Output is correct
6 Correct 5 ms 1536 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 5 ms 1536 KB Output is correct
9 Correct 5 ms 1536 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1536 KB Output is correct
12 Correct 5 ms 1536 KB Output is correct
13 Correct 5 ms 1536 KB Output is correct
14 Correct 5 ms 1280 KB Output is correct
15 Correct 5 ms 1536 KB Output is correct
16 Correct 5 ms 1536 KB Output is correct
17 Correct 5 ms 1280 KB Output is correct
18 Correct 16 ms 19072 KB Output is correct
19 Correct 14 ms 19072 KB Output is correct
20 Correct 14 ms 18944 KB Output is correct
21 Correct 14 ms 19072 KB Output is correct
22 Correct 15 ms 19072 KB Output is correct
23 Correct 14 ms 19072 KB Output is correct
24 Correct 15 ms 19072 KB Output is correct
25 Correct 14 ms 19072 KB Output is correct
26 Correct 14 ms 19072 KB Output is correct
27 Correct 14 ms 19072 KB Output is correct
28 Correct 14 ms 19072 KB Output is correct
29 Correct 14 ms 19072 KB Output is correct
30 Correct 14 ms 19072 KB Output is correct
31 Correct 13 ms 19072 KB Output is correct
32 Correct 15 ms 19072 KB Output is correct
33 Correct 13 ms 18432 KB Output is correct
34 Correct 13 ms 18304 KB Output is correct
35 Correct 13 ms 17664 KB Output is correct
36 Correct 13 ms 18304 KB Output is correct
37 Correct 12 ms 17024 KB Output is correct
38 Correct 14 ms 19072 KB Output is correct
39 Correct 13 ms 19072 KB Output is correct
40 Correct 15 ms 18304 KB Output is correct
41 Correct 13 ms 19072 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Execution timed out 600 ms 1021552 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 896 KB Output is correct
5 Correct 5 ms 1408 KB Output is correct
6 Correct 5 ms 1536 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 5 ms 1536 KB Output is correct
9 Correct 5 ms 1536 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1536 KB Output is correct
12 Correct 5 ms 1536 KB Output is correct
13 Correct 5 ms 1536 KB Output is correct
14 Correct 5 ms 1280 KB Output is correct
15 Correct 5 ms 1536 KB Output is correct
16 Correct 5 ms 1536 KB Output is correct
17 Correct 5 ms 1280 KB Output is correct
18 Correct 16 ms 19072 KB Output is correct
19 Correct 14 ms 19072 KB Output is correct
20 Correct 14 ms 18944 KB Output is correct
21 Correct 14 ms 19072 KB Output is correct
22 Correct 15 ms 19072 KB Output is correct
23 Correct 14 ms 19072 KB Output is correct
24 Correct 15 ms 19072 KB Output is correct
25 Correct 14 ms 19072 KB Output is correct
26 Correct 14 ms 19072 KB Output is correct
27 Correct 14 ms 19072 KB Output is correct
28 Correct 14 ms 19072 KB Output is correct
29 Correct 14 ms 19072 KB Output is correct
30 Correct 14 ms 19072 KB Output is correct
31 Correct 13 ms 19072 KB Output is correct
32 Correct 15 ms 19072 KB Output is correct
33 Correct 13 ms 18432 KB Output is correct
34 Correct 13 ms 18304 KB Output is correct
35 Correct 13 ms 17664 KB Output is correct
36 Correct 13 ms 18304 KB Output is correct
37 Correct 12 ms 17024 KB Output is correct
38 Correct 14 ms 19072 KB Output is correct
39 Correct 13 ms 19072 KB Output is correct
40 Correct 15 ms 18304 KB Output is correct
41 Correct 13 ms 19072 KB Output is correct
42 Correct 5 ms 384 KB Output is correct
43 Execution timed out 600 ms 1021552 KB Time limit exceeded
44 Halted 0 ms 0 KB -