Submission #883096

#	Time	Username	Problem	Language	Result	Execution time	Memory
883096		vjudge1	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	100 / 100	462 ms	780628 KiB

joi2019_ho_t3

#include <bits/stdc++.h>

using namespace std;

#define n_l '\n'
#define dbg(...) cout << "[" << #__VA_ARGS__ << "]: "; cout << to_string(__VA_ARGS__) << endl
template <typename T, size_t N> int SIZE(const T (&t)[N]){ return N; } template<typename T> int SIZE(const T &t){ return t.size(); } string to_string(const string s, int x1=0, int x2=1e9){ return '"' + ((x1 < s.size()) ? s.substr(x1, x2-x1+1) : "") + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(const bool b) { return (b ? "true" : "false"); } string to_string(const char c){ return string({c}); } template<size_t N> string to_string(const bitset<N> &b, int x1=0, int x2=1e9){ string t = ""; for(int __iii__ = min(x1,SIZE(b)),  __jjj__ = min(x2, SIZE(b)-1); __iii__ <= __jjj__; ++__iii__){ t += b[__iii__] + '0'; } return '"' + t + '"'; } template <typename A, typename... C> string to_string(const A (&v), int x1=0, int x2=1e9, C... coords); int l_v_l_v_l = 0, t_a_b_s = 0; template <typename A, typename B> string to_string(const pair<A, B> &p) { l_v_l_v_l++; string res = "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; l_v_l_v_l--; return res; } template <typename A, typename... C> string to_string(const A (&v), int x1, int x2, C... coords) { int rnk = rank<A>::value; string tab(t_a_b_s, ' '); string res = ""; bool first = true; if(l_v_l_v_l == 0) res += n_l; res += tab + "["; x1 = min(x1, SIZE(v)), x2 = min(x2, SIZE(v)); auto l = begin(v); advance(l, x1); auto r = l; advance(r, (x2-x1) + (x2 < SIZE(v))); for (auto e = l; e != r; e = next(e)) { if (!first) { res += ", "; } first = false; l_v_l_v_l++; if(e != l){ if(rnk > 1) { res += n_l; t_a_b_s = l_v_l_v_l; }; } else{ t_a_b_s = 0; } res += to_string(*e, coords...); l_v_l_v_l--; } res += "]"; if(l_v_l_v_l == 0) res += n_l; return res; } void dbgm(){;} template<typename Heads, typename... Tails> void dbgm(Heads H, Tails... T){ cout << to_string(H) << " | "; dbgm(T...); } 
#define dbgm(...) cout << "[" << #__VA_ARGS__ << "]: "; dbgm(__VA_ARGS__); cout << endl


#define lli long long int
#define MP make_pair
#define pb push_back
#define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)

#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
}


const double EPS = 0.00001;
const int INF = 1e9+500;
const int N = 405;
const int ALPH = 26;
const int LGN = 25;
const int MOD = 1e9+7;
int n,m,q;
int dp[N][N][N][3];
vector<int> s;
vector<int> p[3];
int mxs[3];
vector<int> plac[3]; // 1 - indexed
void find_oth(int x, vector<int> &oth) {
    oth.clear();
    for(int i = 0; i<3; i++) {
        if(i == x) continue;
        oth.pb(i);
    }
    
}

void reset() {
    REP(i,N) REP(j,N) REP(k,N) REP(t,3) {
        dp[i][j][k][t] = INF;
    } 
}

inline void solve() {
    cin>>n;
    string tmp;
    cin>>tmp;
    s.assign(n+3, -1);
    for(int i = 0; i<n; i++) {
        if(tmp[i] == 'R') s[i + 1] = 0;
        if(tmp[i] == 'G') s[i + 1] = 1;
        if(tmp[i] == 'Y') s[i + 1] = 2;

    }
    reset();
    REP(i,3) {
        p[i].assign(n+2, 0);
        p[i][0] = 0;
        plac[i].pb(0);
        dp[0][0][0][i] = 0;
    }
    for(int i = 1; i<=n; i++) {
        plac[ s[i] ].pb(i);
    }
    for(int t = 0; t<3; t++) {
        for(int i = 1; i<=n; i++) {
            p[t][i] = p[t][i - 1] + (s[i] == t);
        }
        mxs[t] = p[t][n];
    }

    for(int i = 1; i<=n; i++) {
        array<int,3> cnt;
        for(cnt[0] = 0; cnt[0] <= mxs[0]; cnt[0]++) {
            for(cnt[1] = 0; cnt[1] <= mxs[1]; cnt[1]++) {
                if(cnt[1] + cnt[0] > i) break;
                cnt[2] = i - cnt[0] - cnt[1];
                if(cnt[2] > mxs[2]) continue;
                for(int cur = 0; cur<3; cur++) {
                    if(cnt[cur] == 0) continue;
                    int ind = plac[cur][cnt[cur]];
                    int bef = 0;
                    for(int t = 0; t<3; t++) {
                        bef += min(p[t][ind - 1], cnt[t] - (t == cur));    
                    }
                    int aft = i - 1 - bef;
                    int nwind = ind + aft;
                    int cost = nwind - i;
                    vector<int> lst;
                    find_oth(cur, lst);
                    int prcnt[3];
                    for(int t = 0; t<3; t++) {
                        prcnt[t] = cnt[t];
                        if(t == cur) prcnt[t]--;
                    }
                    for(auto el : lst) {
                        dp[i][cnt[0]][cnt[1]][cur] = min(dp[i][cnt[0]][cnt[1]][cur], cost + dp[i - 1][prcnt[0]][prcnt[1]][el]);
                    }
                }
            }
        }
    }

    int ans = INF;
    for(int i = 0; i<3; i++) ans = min(dp[n][mxs[0]][mxs[1]][i], ans);
    if(ans == INF) ans = -1;
    cout<<ans<<"\n"; 
}
 
signed main() {

    fastio();
    int test = 1;
    //cin>>test;
    while(test--) {
        solve();
    }
    
}

Compilation message (stderr)

joi2019_ho_t3.cpp: In function 'std::string to_string(std::string, int, int)':
joi2019_ho_t3.cpp:7:208: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | template <typename T, size_t N> int SIZE(const T (&t)[N]){ return N; } template<typename T> int SIZE(const T &t){ return t.size(); } string to_string(const string s, int x1=0, int x2=1e9){ return '"' + ((x1 < s.size()) ? s.substr(x1, x2-x1+1) : "") + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(const bool b) { return (b ? "true" : "false"); } string to_string(const char c){ return string({c}); } template<size_t N> string to_string(const bitset<N> &b, int x1=0, int x2=1e9){ string t = ""; for(int __iii__ = min(x1,SIZE(b)),  __jjj__ = min(x2, SIZE(b)-1); __iii__ <= __jjj__; ++__iii__){ t += b[__iii__] + '0'; } return '"' + t + '"'; } template <typename A, typename... C> string to_string(const A (&v), int x1=0, int x2=1e9, C... coords); int l_v_l_v_l = 0, t_a_b_s = 0; template <typename A, typename B> string to_string(const pair<A, B> &p) { l_v_l_v_l++; string res = "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; l_v_l_v_l--; return res; } template <typename A, typename... C> string to_string(const A (&v), int x1, int x2, C... coords) { int rnk = rank<A>::value; string tab(t_a_b_s, ' '); string res = ""; bool first = true; if(l_v_l_v_l == 0) res += n_l; res += tab + "["; x1 = min(x1, SIZE(v)), x2 = min(x2, SIZE(v)); auto l = begin(v); advance(l, x1); auto r = l; advance(r, (x2-x1) + (x2 < SIZE(v))); for (auto e = l; e != r; e = next(e)) { if (!first) { res += ", "; } first = false; l_v_l_v_l++; if(e != l){ if(rnk > 1) { res += n_l; t_a_b_s = l_v_l_v_l; }; } else{ t_a_b_s = 0; } res += to_string(*e, coords...); l_v_l_v_l--; } res += "]"; if(l_v_l_v_l == 0) res += n_l; return res; } void dbgm(){;} template<typename Heads, typename... Tails> void dbgm(Heads H, Tails... T){ cout << to_string(H) << " | "; dbgm(T...); }
      |                                                                                                                                                                                                             ~~~^~~~~~~~~~
joi2019_ho_t3.cpp: In function 'void reset()':
joi2019_ho_t3.cpp:14:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
joi2019_ho_t3.cpp:46:5: note: in expansion of macro 'REP'
   46 |     REP(i,N) REP(j,N) REP(k,N) REP(t,3) {
      |     ^~~
joi2019_ho_t3.cpp:14:26: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
joi2019_ho_t3.cpp:46:14: note: in expansion of macro 'REP'
   46 |     REP(i,N) REP(j,N) REP(k,N) REP(t,3) {
      |              ^~~
joi2019_ho_t3.cpp:14:26: warning: unnecessary parentheses in declaration of 'k' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
joi2019_ho_t3.cpp:46:23: note: in expansion of macro 'REP'
   46 |     REP(i,N) REP(j,N) REP(k,N) REP(t,3) {
      |                       ^~~
joi2019_ho_t3.cpp:14:26: warning: unnecessary parentheses in declaration of 't' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
joi2019_ho_t3.cpp:46:32: note: in expansion of macro 'REP'
   46 |     REP(i,N) REP(j,N) REP(k,N) REP(t,3) {
      |                                ^~~
joi2019_ho_t3.cpp: In function 'void solve()':
joi2019_ho_t3.cpp:14:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
joi2019_ho_t3.cpp:63:5: note: in expansion of macro 'REP'
   63 |     REP(i,3) {
      |     ^~~

• Subtask 1: 5 / 5
• Subtask 2: 55 / 55
• Subtask 3: 15 / 15
• Subtask 4: 25 / 25