oj.uz

Submission #878988

# Submission time Handle Problem Language Result Execution time Memory
878988 2023-11-26T03:39:28 Z niter Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
15 / 100
 102 ms 307024 KB 
#include <bits/stdc++.h>
#define pb push_back
#define ins isnert
#define pii pair<int,int>
#define ff first
#define ss second
#define loop(i,a,b) for(int i = (a); i < (b); i ++)
#define op(x) cerr << #x << " = " << x << endl;
#define opa(x) cerr << #x << " = " << x << ", ";
#define ops(x) cerr << x;
#define spac cerr << ' ';
#define entr cerr << endl;
#define STL(x) cerr << #x << " : "; for(auto &qwe:x) cerr << qwe << ' '; cerr << endl;
#define ARR(x, nnn) cerr << #x << " : "; loop(qwe,0,nnn) cerr << x[qwe] << ' '; cerr << endl;
#define BAE(x) (x).begin(), (x).end()
using namespace std;
mt19937 RNG(chrono::steady_clock::now().time_since_epoch().count());

int a[405], cnt[3];
vector<int> pos[3];
int dp[405][405][405][3];
bool vis[405][405][405][3];
const int INF = 1e8;

inline void upd(int &x, int y){
    x = min(x, y);
}
inline int pos_diff(int ca, int cb, int cc, int last){
    int now = ca + cb + cc - 1; // 0-based
    if(last == 0){
        return abs(now - pos[0][ca]);
    }
    if(last == 1){
        return abs(now - pos[1][cb]);
    }
    if(last == 2){
        return abs(now - pos[2][cc]);
    }
}
int cac(int ca, int cb, int cc, int last){
    if(ca < 0 || cb < 0 || cc < 0) return INF;
    if(ca == 0 && cb == 0 && cc == 0) return 0;
    if(last == 0 && ca == 0) return INF;
    if(last == 1 && cb == 0) return INF;
    if(last == 2 && cc == 0) return INF;
    if(vis[ca][cb][cc][last]) return dp[ca][cb][cc][last];
    loop(i,0,3){
        if(i == last) continue;
        int ret = cac(ca-(last == 0), cb-(last == 1), cc-(last == 2), i) + pos_diff(ca, cb, cc, last);
        upd(dp[ca][cb][cc][last], ret);
    }
    return dp[ca][cb][cc][last];
}

int main(){
    ios::sync_with_stdio(false); cin.tie(0);
//    freopen("in.txt", "r", stdin);
    int n; string s;
    cin >> n >> s;
    loop(i,0,3) pos[i].pb(-999);
    loop(i,0,n){
        if(s[i] == 'R') a[i] = 0;
        else if(s[i] == 'G') a[i] = 1;
        else a[i] = 2;
        cnt[a[i]]++;
        pos[a[i]].pb(i);
    }
    loop(i,0,cnt[0]+1)
        loop(j,0,cnt[1]+1)
            loop(k,0,cnt[2]+1)
                loop(l,0,3)
                    dp[i][j][k][l] = INF;
    loop(i,0,3){
        vis[0][0][0][i] = true;
        dp[0][0][0][i] = 0;
    }
    loop(i,0,3){
        if(cnt[i] != 0)
            cac(cnt[0], cnt[1], cnt[2], i);
    }
    int ans = INF;
    loop(i,0,3) ans = min(ans, dp[cnt[0]][cnt[1]][cnt[2]][i]);
    if(ans == INF) cout << "-1\n";
    else cout << (ans >> 1) << '\n';
}

Compilation message

joi2019_ho_t3.cpp: In function 'int pos_diff(int, int, int, int)':
joi2019_ho_t3.cpp:39:1: warning: control reaches end of non-void function [-Wreturn-type]
   39 | }
      | ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 14840 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 3 ms 14824 KB Output is correct
9 Correct 2 ms 14684 KB Output is correct
10 Correct 4 ms 22876 KB Output is correct
11 Incorrect 2 ms 12636 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #2
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 14840 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 3 ms 14824 KB Output is correct
9 Correct 2 ms 14684 KB Output is correct
10 Correct 4 ms 22876 KB Output is correct
11 Incorrect 2 ms 12636 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 1 ms 6488 KB Output is correct
2 Correct 102 ms 301852 KB Output is correct
3 Correct 46 ms 301392 KB Output is correct
4 Correct 49 ms 301868 KB Output is correct
5 Correct 47 ms 304212 KB Output is correct
6 Correct 49 ms 302928 KB Output is correct
7 Correct 47 ms 302124 KB Output is correct
8 Correct 46 ms 305852 KB Output is correct
9 Correct 46 ms 305492 KB Output is correct
10 Correct 47 ms 307024 KB Output is correct
11 Correct 48 ms 306780 KB Output is correct
12 Correct 20 ms 201560 KB Output is correct
13 Correct 26 ms 248400 KB Output is correct
14 Correct 34 ms 268628 KB Output is correct
15 Correct 48 ms 306340 KB Output is correct
16 Correct 47 ms 306260 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 2 ms 14840 KB Output is correct
7 Correct 2 ms 16732 KB Output is correct
8 Correct 3 ms 14824 KB Output is correct
9 Correct 2 ms 14684 KB Output is correct
10 Correct 4 ms 22876 KB Output is correct
11 Incorrect 2 ms 12636 KB Output isn't correct
12 Halted 0 ms 0 KB -