oj.uz

Submission #762098

# Submission time Handle Problem Language Result Execution time Memory
762098 2023-06-20T19:36:26 Z sysia Growing Vegetable is Fun 3 (JOI19_ho_t3) C++17
75 / 100
 500 ms 149720 KB 
//Sylwia Sapkowska
#include <bits/stdc++.h>
#pragma GCC optimize("O3", "unroll-loops")
using namespace std;

void __print(int x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << "'" << x << "'";}
void __print(const char *x) {cerr << '"' << x << '"';}
void __print(const string &x) {cerr << '"' << x << '"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ", "; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? ", " : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef LOCAL
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif

#define int long long
typedef pair<int, int> T;
const int oo = 1e18, oo2 = 1e9+7, K = 30;
const int mod = 998244353;

int ti(char c){
    if (c == 'R') return 0;
    if (c == 'G') return 1;
    return 2;
}

void ckmin(int &a, int b){
    a = min(a, b);
}

void solve(){
    int n; cin >> n;
    string s; cin >> s;
    vector<int>cnt(3);
    for (auto c: s) cnt[ti(c)]++;
    int mx = 0;
    for (auto x: cnt) mx = max(mx, x);
    int p = 0;
    int a = -1, b = -1;
    for (int i = 0; i<3; i++) {
        if (cnt[i] == mx){
            p = i;
        }
    }
    for (int i = 0; i<3; i++){
        if (i == p) continue;
        if (a == -1) a = i;
        else b = i;
    }
    debug(p, a, b);
    s = "$" + s;
    vector<vector<int>>pos(3, {-oo});
    for (int i = 1; i<=n; i++){
        int x = ti(s[i]);
        pos[x].emplace_back(i);
    }
    int dp[n+1][cnt[a]+1][cnt[b]+1][3];
    for (int i = 0; i<=n; i++){
        for (int A = 0; A <= cnt[a]; A++){
            for (int B = 0; B <= cnt[b]; B++){
                for (int last = 0; last < 3; last++){
                    dp[i][A][B][last] = oo;
                }
            }
        }
    }
    auto ile = [&](int l, int r, int where){
        int x = (int)(upper_bound(pos[where].begin(), pos[where].end(), r) - upper_bound(pos[where].begin(), pos[where].end(), l));
        return max(0ll, x);
    };
    for (int i = 0; i<3; i++) dp[0][0][0][i] = 0;
    for (int i = 1; i<=n; i++){
        for (int A = 0; A <= cnt[a]; A++){
            for (int B = 0; B <= min(cnt[b], i-A); B++){
                int C = i - A - B;
                if (C < 0 || C > cnt[p]) continue;
                for (int last = 0; last < 3; last++){
                    for (int prev = 0; prev < 3; prev++){
                        if (last == prev) continue;
                        if (last == a){
                            if (!A) continue;
                            int now = pos[last][A];
                            int cost = now-i;
                            if (B) cost += ile(now, pos[b][B], b);
                            if (C) cost += ile(now, pos[p][C], p);
                            ckmin(dp[i][A][B][last], dp[i-1][A-1][B][prev] + cost);
                        } else if (last == b){
                            if (!B) continue;
                            int now = pos[last][B];
                            int cost = now-i;
                            if (A) cost += ile(now, pos[a][A], a);
                            if (C) cost += ile(now, pos[p][C], p);
                            ckmin(dp[i][A][B][last], dp[i-1][A][B-1][prev] + cost);
                        } else {
                            if (!C) continue;
                            int now = pos[p][C];
                            int cost = now-i;
                            if (A) cost += ile(now, pos[a][A], a);
                            if (B) cost += ile(now, pos[b][B], b);
                            ckmin(dp[i][A][B][last], dp[i-1][A][B][prev] + cost);
                        }
                    }
                    if (dp[i][A][B][last] >= oo) continue;
                }
            }
        }
    }
    int ans = oo;
    for (int last = 0; last < 3; last++){
        ans = min(ans, dp[n][cnt[a]][cnt[b]][last]);
    }
    if (ans == oo) cout << "-1\n";
    else cout << ans << "\n";
}

int32_t main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int t = 1;
    //cin >> t;
    while (t--) solve();

    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 4 ms 828 KB Output is correct
19 Correct 4 ms 724 KB Output is correct
20 Correct 4 ms 724 KB Output is correct
21 Correct 4 ms 852 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 5 ms 852 KB Output is correct
24 Correct 4 ms 704 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 3 ms 596 KB Output is correct
28 Correct 3 ms 852 KB Output is correct
29 Correct 3 ms 852 KB Output is correct
30 Correct 4 ms 724 KB Output is correct
31 Correct 4 ms 724 KB Output is correct
32 Correct 4 ms 724 KB Output is correct
33 Correct 1 ms 316 KB Output is correct
34 Correct 2 ms 468 KB Output is correct
35 Correct 4 ms 724 KB Output is correct
36 Correct 3 ms 724 KB Output is correct
37 Correct 3 ms 724 KB Output is correct
38 Correct 3 ms 724 KB Output is correct
39 Correct 4 ms 852 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 2 ms 340 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 8 ms 2216 KB Output is correct
3 Correct 9 ms 2260 KB Output is correct
4 Correct 12 ms 2132 KB Output is correct
5 Correct 12 ms 2116 KB Output is correct
6 Correct 12 ms 2216 KB Output is correct
7 Correct 12 ms 2204 KB Output is correct
8 Correct 12 ms 2116 KB Output is correct
9 Correct 12 ms 2132 KB Output is correct
10 Correct 12 ms 2220 KB Output is correct
11 Correct 12 ms 2212 KB Output is correct
12 Correct 3 ms 724 KB Output is correct
13 Correct 6 ms 1220 KB Output is correct
14 Correct 8 ms 1620 KB Output is correct
15 Correct 12 ms 2204 KB Output is correct
16 Correct 12 ms 2208 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 4 ms 828 KB Output is correct
19 Correct 4 ms 724 KB Output is correct
20 Correct 4 ms 724 KB Output is correct
21 Correct 4 ms 852 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 5 ms 852 KB Output is correct
24 Correct 4 ms 704 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 3 ms 596 KB Output is correct
28 Correct 3 ms 852 KB Output is correct
29 Correct 3 ms 852 KB Output is correct
30 Correct 4 ms 724 KB Output is correct
31 Correct 4 ms 724 KB Output is correct
32 Correct 4 ms 724 KB Output is correct
33 Correct 1 ms 316 KB Output is correct
34 Correct 2 ms 468 KB Output is correct
35 Correct 4 ms 724 KB Output is correct
36 Correct 3 ms 724 KB Output is correct
37 Correct 3 ms 724 KB Output is correct
38 Correct 3 ms 724 KB Output is correct
39 Correct 4 ms 852 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 2 ms 340 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 8 ms 2216 KB Output is correct
44 Correct 9 ms 2260 KB Output is correct
45 Correct 12 ms 2132 KB Output is correct
46 Correct 12 ms 2116 KB Output is correct
47 Correct 12 ms 2216 KB Output is correct
48 Correct 12 ms 2204 KB Output is correct
49 Correct 12 ms 2116 KB Output is correct
50 Correct 12 ms 2132 KB Output is correct
51 Correct 12 ms 2220 KB Output is correct
52 Correct 12 ms 2212 KB Output is correct
53 Correct 3 ms 724 KB Output is correct
54 Correct 6 ms 1220 KB Output is correct
55 Correct 8 ms 1620 KB Output is correct
56 Correct 12 ms 2204 KB Output is correct
57 Correct 12 ms 2208 KB Output is correct
58 Execution timed out 1095 ms 149720 KB Time limit exceeded
59 Halted 0 ms 0 KB -