# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
392896 | vanic | UFO (IZhO14_ufo) | C++14 | 2098 ms | 117092 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <cstdio>
#include <cmath>
#include <algorithm>
#include <vector>
#include <set>
#include <array>
using namespace std;
const int maxn=1e6+5;
typedef long long ll;
struct tournament{
vector < int > t;
int pot;
tournament(int sz){
for(int i=0; i<sz; i++){
t.push_back(0);
}
pot=sz/2;
}
void update(int x, int val){
t[x]+=val;
for(x/=2; x>0; x/=2){
t[x]=max(t[x*2], t[x*2+1]);
}
}
int query(int L, int D, int x, int l, int d, int val, bool p){
if(L>=l && D<=d){
// cout << L << ' ' << D << ' ' << t[x] << endl;
if(t[x]>=val){
while(x<pot){
if(p){
if(t[x*2]>=val){
x*=2;
}
else{
x=x*2+1;
}
}
else{
if(t[x*2+1]>=val){
x=x*2+1;
}
else{
x*=2;
}
}
}
return x-pot;
}
return -1;
}
int vrij=-1;
if(p){
if((L+D)/2>=l){
vrij=query(L, (L+D)/2, x*2, l, d, val, p);
}
if(vrij!=-1){
return vrij;
}
if((L+D)/2+1<=d){
vrij=query((L+D)/2+1, D, x*2+1, l, d, val, p);
}
}
else{
if((L+D)/2+1<=d){
vrij=query((L+D)/2+1, D, x*2+1, l, d, val, p);
}
if(vrij!=-1){
return vrij;
}
if((L+D)/2>=l){
vrij=query(L, (L+D)/2, x*2, l, d, val, p);
}
}
return vrij;
}
};
vector < tournament > R, S;
int n, m, r, k, p;
vector < vector < int > > l;
vector < vector < ll > > pref;
int main(){
scanf("%d%d%d%d%d", &n, &m, &r, &k, &p);
vector < int > vi;
vector < ll > vi1;
int a;
int pot1=(1<<(int)ceil(log2(n)));
tournament T1(pot1*2);
for(int i=0; i<m; i++){
S.push_back(T1);
}
int pot2=(1<<(int)ceil(log2(m)));
tournament T2(pot2*2);
for(int i=0; i<n; i++){
R.push_back(T2);
}
vi1.resize(m+1, 0);
for(int i=0; i<n; i++){
for(int j=0; j<m; j++){
cin >> a;
R[i].update(j+pot2, a);
S[j].update(i+pot1, a);
vi.push_back(a);
}
pref.push_back(vi1);
l.push_back(vi);
vi.clear();
}
pref.push_back(vi1);
char c;
int b;
int pos;
// printf("krecem\n");
for(int i=0; i<k; i++){
getchar();
scanf("%c%d%d", &c, &a, &b);
// printf("%c %d %d\n", c, a, b);
a--;
if(c=='W'){
pos=0;
for(int j=0; j<r; j++){
pos=R[a].query(0, pot2-1, 1, pos, pot2-1, b, 1);
// cout << "vracam " << pos << endl;
if(pos==-1){
break;
}
R[a].update(pos+pot2, -1);
S[pos].update(a+pot1, -1);
l[a][pos]--;
pos++;
}
}
else if(c=='N'){
pos=0;
for(int j=0; j<r; j++){
pos=S[a].query(0, pot1-1, 1, pos, pot1-1, b, 1);
if(pos==-1){
break;
}
R[pos].update(a+pot2, -1);
S[a].update(pos+pot1, -1);
l[pos][a]--;
pos++;
}
}
else if(c=='E'){
pos=pot2-1;
for(int j=0; j<r; j++){
pos=R[a].query(0, pot2-1, 1, 0, pos, b, 0);
if(pos==-1){
break;
}
R[a].update(pos+pot2, -1);
S[pos].update(a+pot1, -1);
l[a][pos]--;
pos--;
}
}
else{
pos=pot1-1;
for(int j=0; j<r; j++){
pos=S[a].query(0, pot1-1, 1, 0, pos, b, 0);
if(pos==-1){
break;
}
R[pos].update(a+pot2, -1);
S[a].update(pos+pot1, -1);
l[pos][a]--;
pos--;
}
}
// printf("dalje\n");
}
// printf("kraj\n");
for(int i=0; i<n; i++){
for(int j=0; j<m; j++){
pref[i+1][j+1]=pref[i][j+1]+pref[i+1][j]-pref[i][j]+l[i][j];
}
}
ll maksi=0;
for(int i=p; i<=n; i++){
for(int j=p; j<=m; j++){
maksi=max(maksi, pref[i][j]-pref[i-p][j]-pref[i][j-p]+pref[i-p][j-p]);
}
}
printf("%lld\n", maksi);
return 0;
}
Compilation message (stderr)
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