oj.uz

Submission #737731

# Submission time Handle Problem Language Result Execution time Memory
737731 2023-05-07T16:05:34 Z 1075508020060209tc The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 1181 ms 262144 KB 
#include<bits/stdc++.h>
using namespace std;
//#define int long long
int n;int m;
int TPV;int BTV;
int gr[2010][2010];
int tgr[2010][2010];
int rmq[2010][12][2010];
int rmxq[2010][12][2010];
int ans;

int chmx(int id,int l,int r){
int lg=__lg(r-l+1);
return max(rmxq[id][lg][l],rmxq[id][lg][r-(1<<lg)+1]);
}
int chmn(int id,int l,int r){
int lg=__lg(r-l+1);
return min(rmq[id][lg][l],rmq[id][lg][r-(1<<lg)+1]);
}



void spin(){

for(int i=1;i<=n;i++){
    for(int j=1;j<=m;j++){
        tgr[j][n-i+1 ]=gr[i][j];
    }
}
swap(n,m);
for(int i=1;i<=n;i++){
    for(int j=1;j<=m;j++){
        gr[i][j]=tgr[i][j];
    }
}
}

void precalc(){
for(int i=1;i<=n;i++){
    for(int j=1;j<=m;j++){
        rmq[i][0][j]=gr[i][j];
        rmxq[i][0][j]=gr[i][j];
    }
}
for(int t=1;t<=11;t++){
    for(int i=1;i<=n;i++){
        for(int j=1;j+(1<<t)-1<=m;j++){
            rmq[i][t][j]=min(rmq[i][t-1][j],rmq[i][t-1][j+(1<<(t-1))]);
            rmxq[i][t][j]=max(rmxq[i][t-1][j],rmxq[i][t-1][j+(1<<(t-1))]);
        }
    }
}
}

int ok1(int mid){
int lst=m;
int tp=TPV-mid;
int bt=BTV+mid;
for(int i=1;i<=n;i++){
    int l=0;int r=lst;
    while(l<r){
        int mi=l+(r-l+1)/2;
        if((mi==0||(mi!=0&&chmn(i,1,mi)>=tp)) ){
            l=mi;
        }else{
            r=mi-1;
        }
    }
    lst=l;
    if((lst!=m&&chmx(i,lst+1,m)>bt) ){return 0;}
}
return 1;
}

int ok2(int mid){
int lst=m;
int tp=TPV-mid;
int bt=BTV+mid;
for(int i=1;i<=n;i++){
    int l=0;int r=lst;
    while(l<r){
        int mi=l+(r-l+1)/2;
        if((mi==0||(mi!=0&&chmx(i,1,mi)<=bt)) ){
            l=mi;
        }else{
            r=mi-1;
        }
    }
    lst=l;
    if((lst!=m&&chmn(i,lst+1,m)<tp) ){return 0;}
}
return 1;
}




int solve(){
int l=0;int r=1e9;

while(l<r){
    int mi=l+(r-l)/2;
    if((ok1(mi)||ok2(mi))){
        r=mi;
    }else{
        l=mi+1;
    }
}
return l;
}



signed main(){
cin>>n>>m;
for(int i=1;i<=n;i++){
    for(int j=1;j<=m;j++){
        cin>>gr[i][j];
    }
}
TPV=gr[1][1];BTV=gr[1][1];
for(int i=1;i<=n;i++){
    for(int j=1;j<=m;j++){
        TPV=max(TPV,gr[i][j]);
        BTV=min(BTV,gr[i][j]);
    }
}
ans=1e9;
precalc();
ans=solve();
for(int t=1;t<=3;t++){
    spin();
    precalc();
    ans=min(ans,solve());
}
cout<<ans<<endl;





}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 692 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 1 ms 724 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 1 ms 724 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 692 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 1 ms 724 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 1 ms 724 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 16 ms 17196 KB Output is correct
17 Correct 24 ms 17364 KB Output is correct
18 Correct 23 ms 17244 KB Output is correct
19 Correct 22 ms 17228 KB Output is correct
20 Correct 26 ms 17216 KB Output is correct
21 Correct 25 ms 17240 KB Output is correct
22 Correct 24 ms 17440 KB Output is correct
23 Correct 26 ms 17364 KB Output is correct
24 Correct 29 ms 17204 KB Output is correct
25 Correct 25 ms 17344 KB Output is correct
26 Correct 27 ms 17268 KB Output is correct
27 Correct 28 ms 17288 KB Output is correct
28 Correct 27 ms 17364 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 692 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 724 KB Output is correct
10 Correct 1 ms 724 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 1 ms 724 KB Output is correct
15 Correct 5 ms 8916 KB Output is correct
16 Correct 16 ms 17196 KB Output is correct
17 Correct 24 ms 17364 KB Output is correct
18 Correct 23 ms 17244 KB Output is correct
19 Correct 22 ms 17228 KB Output is correct
20 Correct 26 ms 17216 KB Output is correct
21 Correct 25 ms 17240 KB Output is correct
22 Correct 24 ms 17440 KB Output is correct
23 Correct 26 ms 17364 KB Output is correct
24 Correct 29 ms 17204 KB Output is correct
25 Correct 25 ms 17344 KB Output is correct
26 Correct 27 ms 17268 KB Output is correct
27 Correct 28 ms 17288 KB Output is correct
28 Correct 27 ms 17364 KB Output is correct
29 Runtime error 1181 ms 262144 KB Execution killed with signal 9
30 Halted 0 ms 0 KB -