oj.uz

Submission #1075209

# Submission time Handle Problem Language Result Execution time Memory
1075209 2024-08-25T20:05:54 Z ainta Cultivation (JOI17_cultivation) C++17
15 / 100
 2000 ms 7892 KB 
#include <bits/stdc++.h>
using namespace std;

#define rng(i,a,b) for(int i=int(a);i<=int(b);i++)
#define rep(i,b) rng(i,0,b-1)
#define gnr(i,b,a) for(int i=int(b);i>=int(a);i--)
#define per(i,b) gnr(i,b-1,0)
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define bg begin()
#define ed end()
#define all(x) x.bg,x.ed
#define si(x) int(x.size())
template<class t> using vc=vector<t>;
template<class t> using vvc=vc<vc<t>>;
typedef long long ll;
using pii=pair<int,int>;
using vi=vc<int>;
using uint=unsigned;
using ull=unsigned long long;
using pil=pair<int,ll>;
using pli=pair<ll,int>;
using pll=pair<ll,ll>;
using t3=tuple<int,int,int>;

ll rand_int(ll l, ll r) { //[l, r]
	#ifdef LOCAL
	static mt19937_64 gen;
	#else
    static mt19937_64 gen(chrono::steady_clock::now().time_since_epoch().count());
    #endif
    return uniform_int_distribution<ll>(l, r)(gen);
}


template <uint MD> struct ModInt {
    using M = ModInt;
    const static M G;
    uint v;
    ModInt(ll _v = 0) { set_v(_v % MD + MD); }
    M& set_v(uint _v) {
        v = (_v < MD) ? _v : _v - MD;
        return *this;
    }
    explicit operator bool() const { return v != 0; }
    M operator-() const { return M() - *this; }
    M operator+(const M& r) const { return M().set_v(v + r.v); }
    M operator-(const M& r) const { return M().set_v(v + MD - r.v); }
    M operator*(const M& r) const { return M().set_v(ull(v) * r.v % MD); }
    M operator/(const M& r) const { return *this * r.inv(); }
    M& operator+=(const M& r) { return *this = *this + r; }
    M& operator-=(const M& r) { return *this = *this - r; }
    M& operator*=(const M& r) { return *this = *this * r; }
    M& operator/=(const M& r) { return *this = *this / r; }
    bool operator==(const M& r) const { return v == r.v; }
    M pow(ll n) const {
        M x = *this, r = 1;
        while (n) {
            if (n & 1) r *= x;
            x *= x;
            n >>= 1;
        }
        return r;
    }
    M inv() const { return pow(MD - 2); }
    friend ostream& operator<<(ostream& os, const M& r) { return os << r.v; }
};
using Mint = ModInt<998244353>;
template<> const Mint Mint::G = Mint(3);

using t4 = tuple<int,int,int,int>;

int H, W, n;

const int SZ = 1024;

struct Tree{
    int Mn[SZ+SZ], K[SZ+SZ];
    void UDT(int nd){
        Mn[nd] = min(Mn[nd*2],Mn[nd*2+1]);
    }
    void Add2(int nd, int k){
        Mn[nd] += k;
        K[nd] += k;
    }
    void Spread(int nd){
        Add2(nd*2, K[nd]);
        Add2(nd*2+1, K[nd]);
        K[nd]=0;
    }
    void init(int nd, int b, int e){
        K[nd]=0;
        if(b==e){
            Mn[nd]=0;
            return;
        }
        int m = (b+e)>>1;
        init(nd*2,b,m);
        init(nd*2+1,m+1,e);
        UDT(nd);
    }
    void Add(int nd, int b, int e, int s, int l, int x){
        if(s>l)return;
        if(s<=b&&e<=l){
            Add2(nd,x);
            return;
        }
        Spread(nd);
        int m = (b+e)>>1;
        if(s<=m)Add(nd*2,b,m,s,l,x);
        if(l>m)Add(nd*2+1,m+1,e,s,l,x);
        UDT(nd);
    }
    int getLeft(int nd, int b, int e, int x){
        if(Mn[nd])return SZ;
        if(b==e)return b;
        Spread(nd);
        int m = (b+e)>>1;
        if(x<=m)return getLeft(nd*2,b,m,x);
        int r = getLeft(nd*2+1,m+1,e,x);
        if(r==SZ)r = getLeft(nd*2,b,m,x);
        return r;
    }
    int getRight(int nd, int b, int e, int x){
        if(Mn[nd])return -1;
        if(b==e)return b;
        Spread(nd);
        int m = (b+e)>>1;
        if(x>m)return getRight(nd*2+1,m+1,e,x);
        int r = getRight(nd*2,b,m,x);
        if(r==-1)r = getRight(nd*2+1,m+1,e,x);
        return r;
    }
}IT;

struct IdxTree{
    int IT[SZ+SZ];
    void Put(int a, int b){
        a+=SZ;
        IT[a]=b;
        while(a!=1){
            a>>=1;
            IT[a]=max(IT[a*2],IT[a*2+1]);
        }
    }
    int Max(int b, int e){
        b+=SZ,e+=SZ;
        int r=-1e9;
        while(b<=e){
            r=max(r,IT[b]);
            r=max(r,IT[e]);
            b=(b+1)>>1,e=(e-1)>>1;
        }
        return r;
    }
}LL, RR;


bool Pos(int x, int y, vc<pii> &w){
    vc<t4>S;
    vc<pii> Y;
    rep(i,n){
        Y.pb({w[i].se-y, i});
        Y.pb({w[i].se, i+n});
    }
    Y.pb({0,2*n});
    sort(all(Y));
    vi RY(n*2+1), OY(n*2+2);
    int cy=0;
    rep(i,si(Y)){
        if(i==0 || Y[i].fi!=Y[i-1].fi){
            cy++;
            OY[cy] = Y[i].fi;
        }
        RY[Y[i].se] = cy;
    }

    rep(i,n){
        S.pb({w[i].fi - x, 1, RY[i], RY[i+n]});
        S.pb({w[i].fi, -1, RY[i], RY[i+n]});
    }
    int my = RY[n*2];
    sort(all(S));
    IT.init(1,0,SZ-1);
    vi U;
    rep(i,si(S)){
        auto [x, d, by, ey] = S[i];
        IT.Add(1,0,SZ-1,by,ey-1,d);
        if(i==si(S)-1 || x != get<0>(S[i+1])){
            int l = IT.getLeft(1,0,SZ-1,my); l++;
            int r = IT.getRight(1,0,SZ-1,my);
            LL.Put(si(U),l);
            RR.Put(si(U),-r);
            U.pb(x);
        }
    }
    int pv = 0;
    rep(i,si(U)){
        while(pv<si(U) && (ll)U[pv] - U[i] < H)pv++;
        if(pv==si(U))return false;
        int l2 = LL.Max(i,pv-1);
        int r2 = -RR.Max(i,pv-1);
        if(l2<r2 && (ll)OY[r2] - OY[l2] >= W)return true;
    }
    return false;
}

void Solve(){
    scanf("%d%d",&H,&W);
    scanf("%d",&n);
    vc<pii>w(n);
    rep(i,n){
        scanf("%d%d",&w[i].fi,&w[i].se);
    }
    set<int>SX, SY;
    rep(i,n){
        rep(j,n){
            SX.insert(abs(w[i].fi-w[j].fi));
            SY.insert(abs(w[i].se-w[j].se));
            SX.insert(w[i].fi + H-w[j].fi);
            SY.insert(w[i].se + H-w[j].se);
        }
    }
    SX.erase(0);SY.erase(0);
    SX.insert(H);SY.insert(W);

    vi X, Y;
    for(auto &t: SX)X.pb(t);
    for(auto &t: SY)Y.pb(t);
    int p1 = 0, p2 = si(Y)-1;
    ll res=2e9;
/*    for(auto &x : X)printf("%d ",x);
    puts("");
    for(auto &y : Y)printf("%d ",y);
    puts("");*/
    while(p1 < si(X) && p2 >= 0){
            //printf("%d %d\n",X[p1],Y[p2]);
        if(Pos(X[p1],Y[p2],w)){
            //printf("%d %d\n",X[p1],Y[p2]);
            res = min(res, (ll)X[p1]+Y[p2]-2);
            p2--;
        }
        else p1++;
    }
    printf("%lld\n",res);
}

int main(){
	int TC=1;
	while(TC--){
		Solve();
	}
}

Compilation message

cultivation.cpp: In function 'void Solve()':
cultivation.cpp:211:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  211 |     scanf("%d%d",&H,&W);
      |     ~~~~~^~~~~~~~~~~~~~
cultivation.cpp:212:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  212 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
cultivation.cpp:215:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  215 |         scanf("%d%d",&w[i].fi,&w[i].se);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 3 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 4 ms 444 KB Output is correct
22 Correct 8 ms 496 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 14 ms 348 KB Output is correct
25 Correct 11 ms 448 KB Output is correct
26 Correct 25 ms 348 KB Output is correct
27 Correct 23 ms 528 KB Output is correct
28 Correct 14 ms 344 KB Output is correct
29 Correct 21 ms 348 KB Output is correct
30 Correct 22 ms 344 KB Output is correct
31 Correct 23 ms 524 KB Output is correct
32 Correct 21 ms 348 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 3 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 4 ms 444 KB Output is correct
22 Correct 8 ms 496 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 14 ms 348 KB Output is correct
25 Correct 11 ms 448 KB Output is correct
26 Correct 25 ms 348 KB Output is correct
27 Correct 23 ms 528 KB Output is correct
28 Correct 14 ms 344 KB Output is correct
29 Correct 21 ms 348 KB Output is correct
30 Correct 22 ms 344 KB Output is correct
31 Correct 23 ms 524 KB Output is correct
32 Correct 21 ms 348 KB Output is correct
33 Execution timed out 2043 ms 7892 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 344 KB Output is correct
2 Correct 21 ms 348 KB Output is correct
3 Correct 23 ms 560 KB Output is correct
4 Correct 28 ms 344 KB Output is correct
5 Correct 24 ms 344 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 9 ms 344 KB Output is correct
8 Incorrect 21 ms 572 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 344 KB Output is correct
2 Correct 21 ms 348 KB Output is correct
3 Correct 23 ms 560 KB Output is correct
4 Correct 28 ms 344 KB Output is correct
5 Correct 24 ms 344 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 9 ms 344 KB Output is correct
8 Incorrect 21 ms 572 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 3 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 4 ms 444 KB Output is correct
22 Correct 8 ms 496 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 14 ms 348 KB Output is correct
25 Correct 11 ms 448 KB Output is correct
26 Correct 25 ms 348 KB Output is correct
27 Correct 23 ms 528 KB Output is correct
28 Correct 14 ms 344 KB Output is correct
29 Correct 21 ms 348 KB Output is correct
30 Correct 22 ms 344 KB Output is correct
31 Correct 23 ms 524 KB Output is correct
32 Correct 21 ms 348 KB Output is correct
33 Execution timed out 2043 ms 7892 KB Time limit exceeded
34 Halted 0 ms 0 KB -