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Submission #572677

# Submission time Handle Problem Language Result Execution time Memory
572677 2022-06-05T02:58:46 Z byunjaewoo Sateliti (COCI20_satellti) C++17
110 / 110
 241 ms 37868 KB 
#include <bits/stdc++.h>
using namespace std;
using ull=unsigned long long;

const int Nmax=2010;
const ull P=998244353, Q=1e11+19;
int N, M;
bool A[Nmax][Nmax];
ull Pm[Nmax], Qm[Nmax], Pi, Qi, Pim[Nmax], Qim[Nmax], H[Nmax][Nmax];
pair<int, int> X[Nmax*Nmax];

ull Pow(ull a, ull b) {
    if(b==0) return 1;
    ull tmp=Pow(a, b/2);
    tmp*=tmp;
    if(b%2) tmp*=a;
    return tmp;
}

ull Hash2D(int sy, int sx, int ey, int ex) {
    ull res=H[ey][ex]-H[sy-1][ex]-H[ey][sx-1]+H[sy-1][sx-1];
    return res*Pim[sx-1]*Qim[sy-1];
}

ull Hash1D(int y, int sx, int ex) {
    return Hash2D(y, sx, y, ex);
}

bool f(int ay, int ax, int by, int bx) {
    int h=0, w=0;
    for(int s=1, e=N-1; s<=e;) {
        int m=(s+e)/2;
        if(Hash2D(ay, ax, ay+m-1, ax+M-1)==Hash2D(by, bx, by+m-1, bx+M-1)) h=m, s=m+1;
        else e=m-1;
    }
    for(int s=1, e=M; s<=e;) {
        int m=(s+e)/2;
        if(Hash1D(ay+h, ax, ax+m-1)==Hash1D(by+h, bx, bx+m-1)) w=m, s=m+1;
        else e=m-1;
    }
    if(h==N-1 && w==M) return false;
    if(w==M) return A[ay+h][ax]<A[by+h][bx];
    return A[ay+h][ax+w]<A[by+h][bx+w];
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin>>N>>M;
    for(int i=1; i<=N; i++) {
        string S; cin>>S;
        for(int j=1; j<=M; j++) A[i][j]=(S[j-1]=='.');
    }
    for(int i=1; i<=N; i++) {
        for(int j=M+1; j<=2*M; j++) A[i][j]=A[i][j-M];
    }
    for(int i=N+1; i<=2*N; i++) {
        for(int j=1; j<=2*M; j++) A[i][j]=A[i-N][j];
    }
    Pm[0]=Qm[0]=1;
    for(int i=1; i<=2*max(N, M); i++) {
        Pm[i]=Pm[i-1]*P;
        Qm[i]=Qm[i-1]*Q;
    }
    Pi=Pow(P, ULLONG_MAX); Qi=Pow(Q, ULLONG_MAX);
    Pim[0]=Qim[0]=1;
    for(int i=1; i<=2*max(N, M); i++) {
        Pim[i]=Pim[i-1]*Pi;
        Qim[i]=Qim[i-1]*Qi;
    }
    for(int i=1; i<=2*N; i++) {
        for(int j=1; j<=2*M; j++) {
            H[i][j]=H[i][j-1]+H[i-1][j]-H[i-1][j-1]+A[i][j]*Pm[j-1]*Qm[i-1];
        }
    }
    int x=1, y=1;
    for(int i=1; i<=N; i++) {
        for(int j=1; j<=M; j++) {
            if(f(i, j, x, y)) x=i, y=j;
        }
    }
    for(int i=x; i<=x+N-1; i++) {
        for(int j=y; j<=y+M-1; j++) {
            if(A[i][j]) cout<<".";
            else cout<<"*";
        }
        cout<<"\n";
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 17 ms 6580 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 2 ms 3924 KB Output is correct
11 Correct 17 ms 6612 KB Output is correct
12 Correct 18 ms 6708 KB Output is correct
13 Correct 18 ms 6828 KB Output is correct
14 Correct 18 ms 6832 KB Output is correct
15 Correct 15 ms 6868 KB Output is correct
16 Correct 18 ms 6796 KB Output is correct
17 Correct 20 ms 6868 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 17 ms 6580 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 2 ms 3924 KB Output is correct
11 Correct 17 ms 6612 KB Output is correct
12 Correct 18 ms 6708 KB Output is correct
13 Correct 18 ms 6828 KB Output is correct
14 Correct 18 ms 6832 KB Output is correct
15 Correct 15 ms 6868 KB Output is correct
16 Correct 18 ms 6796 KB Output is correct
17 Correct 20 ms 6868 KB Output is correct
18 Correct 191 ms 36688 KB Output is correct
19 Correct 8 ms 12628 KB Output is correct
20 Correct 4 ms 1108 KB Output is correct
21 Correct 197 ms 37696 KB Output is correct
22 Correct 209 ms 37688 KB Output is correct
23 Correct 188 ms 37708 KB Output is correct
24 Correct 212 ms 37816 KB Output is correct
25 Correct 178 ms 37868 KB Output is correct
26 Correct 241 ms 37772 KB Output is correct
27 Correct 204 ms 37652 KB Output is correct