답안 #338170

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
338170 2020-12-22T15:35:37 Z boykut UFO (IZhO14_ufo) C++14
85 / 100
994 ms 172632 KB
#include <bits/stdc++.h>

using namespace std;

#define int long long

signed main() {
   ios::sync_with_stdio(0);
   cin.tie(0);
   
   int n, m, k, r, p;
   cin >> n >> m >> r >> k >> p;
   
   if (n * m <= 500000) {
      int a[n][m];
      for (int i = 0; i < n; i++) {
         for (int j = 0; j < m; j++) {
            cin >> a[i][j];
         }
      }
      
      for (int i = 0; i < k; i++) {
         char ch; cin >> ch;
         int pos, h; cin >> pos >> h;
         pos--;
         if (ch == 'N') {
            int cnt = 0;
            for (int i = 0; i < n && cnt < r; i++) {
               if (a[i][pos] >= h) {
                  a[i][pos] --;
                  cnt++;
                  if (cnt == r) break;
               }
            }
         } else if (ch == 'E') {
            int cnt = 0;
            for (int i = m - 1; i >= 0 && cnt < r; i--) {
               if (a[pos][i] >= h) {
                  a[pos][i] --;
                  cnt++;
                  if (cnt == r) break;
               }
            }
         } else if (ch == 'W') {
            int cnt = 0;
            for (int i = 0; i < m && cnt < r; i++) {
               if (a[pos][i] >= h) {
                  a[pos][i] --;
                  cnt++;
                  if (cnt == r) break;
               }
            }
         } else {
            int cnt = 0;
            for (int i = n - 1; i >= 0 && cnt < r; i--) {
               if (a[i][pos] >= h) {
                  a[i][pos] --;
                  cnt++;
                  if (cnt == r) break;
               }
            }
         }
      }
      
      for (int i = 0; i < n; i++) {
         for (int j = 0; j < m; j++) {
           //cout << a[i][j] << ' ';
         }
         //cout << '\n';
      }
      
      int sum = 0, ans = 0;
      for (int i = 0; i < n; i++) {
         for (int j = 0; j < m; j++) {
            if (i + p <= n && j + p <= m) {
               sum = 0;
               for (int i1 = i; i1 < i + p; i1++) {
                  for (int j1 = j; j1 < j + p; j1++) {
                     sum += a[i1][j1];
                  }
               }
               if (sum > ans) {
                  //cout << i << ' ' << j << '\n';
                  ans = sum;
                  //cout << sum << "\n\n";
               }
            }
         }
      }
      
      cout << ans << '\n';
   } else {
      
      vector < vector <int> > a(1+n, vector <int> (1+m, 0));
      vector < vector <int> > sum(1+n, vector <int> (1+m, 0));
      
      set <int> col[1+m];
      set <int> row[1+n];
      set <int> del;
      set <int>::iterator it;
      
      for (int i = 1; i <= n; i++) {
         for (int j = 1; j <= m; j++) {
            cin >> a[i][j];
            if (a[i][j] != 0) {
               row[i].insert(j);
               col[j].insert(i);
            }
         }
      }
      for (int tmp = k; tmp--;) {
         char c; cin >> c;
         int pos, h; cin >> pos >> h;
         if (c == 'N') {
            if (col[pos].empty()) continue;
            it = col[pos].begin();
            int cnt = 0;
            for (int temp = col[pos].size(); temp--;) {
               //if(a[*it][pos]>=h){
                  a[*it][pos]--;
                  if (a[*it][pos] == 0) del.insert(*it);
                  cnt++;if(cnt==r)break;
               //}
               it++;
            }
            for (auto i: del) {
               col[pos].erase(i);
               row[i].erase(pos);
            }
         } else if (c == 'S') {
            if (col[pos].empty()) continue;
            it = col[pos].end(); it--;
            int cnt = 0;
            for (int temp = col[pos].size(); temp--;) {
              // if(a[*it][pos]>=h){
                  a[*it][pos]--;
                  if (a[*it][pos] == 0) del.insert(*it);
                  cnt++;if(cnt==r)break;
               //}
               it--;
            }
            for (auto i: del) {
               col[pos].erase(i);
               row[i].erase(pos);
            }
         } else if (c == 'W') {
            if (row[pos].empty()) continue;
            it = row[pos].begin();
            int cnt = 0;
            for (int temp = row[pos].size(); temp--;) {
               //if(a[pos][*it]>=h){
                  a[pos][*it]--;
                  if (a[pos][*it] == 0) del.insert(*it);
                  cnt++;if(cnt==r)break;
               //}
               it++;
            }
            for (auto i: del) {
               row[pos].erase(i);
               col[i].erase(pos);
            }
         } else {
            if (row[pos].empty()) continue;
            it = row[pos].end(); it--;
            int cnt = 0;
            for (int temp = row[pos].size(); temp--;) {
               //if(a[pos][*it]>=h){
                  a[pos][*it]--;
                  if (a[pos][*it] == 0) del.insert(*it);
                  cnt++;if(cnt==r)break;
               //}
               it--;
            }
            for (auto i: del) {
               row[pos].erase(i);
               col[i].erase(pos);
            }
         }
         while (!del.empty())
            del.erase(del.begin());
      }
      
      for (int i = 1; i <= n; i++) {
         for (int j = 1; j <= m; j++) {
            sum[i][j] = a[i][j];
            sum[i][j] += sum[i-1][j];
            sum[i][j] += sum[i][j-1];
            sum[i][j] -= sum[i-1][j-1];
         }
      }
      
      int ans = 0, A, i2, j2;
      for (int i = 1; i <= n; i++) {
         for (int j = 1; j <= m; j++) {
            i2 = i + p - 1, j2 = j + p - 1;
            if (i2 <= n && j2 <= m) {
               A = sum[i2][j2];
               A -= sum[i2][j-1];
               A -= sum[i-1][j2];
               A += sum[i-1][j-1];
               if (A > ans)
                  ans = A;
            }
         }
      }
      
      cout << ans << '\n';
   }
   return 0;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 5 ms 364 KB Output is correct
5 Correct 19 ms 748 KB Output is correct
6 Correct 77 ms 4204 KB Output is correct
7 Correct 559 ms 116444 KB Output is correct
8 Correct 811 ms 116268 KB Output is correct
9 Correct 994 ms 113148 KB Output is correct
10 Correct 813 ms 116164 KB Output is correct
11 Correct 660 ms 113216 KB Output is correct
12 Correct 744 ms 116188 KB Output is correct
13 Correct 861 ms 122500 KB Output is correct
14 Correct 530 ms 113216 KB Output is correct
15 Incorrect 553 ms 116168 KB Output isn't correct
16 Correct 744 ms 113088 KB Output is correct
17 Incorrect 671 ms 122476 KB Output isn't correct
18 Correct 746 ms 109420 KB Output is correct
19 Incorrect 807 ms 122576 KB Output isn't correct
20 Correct 847 ms 172632 KB Output is correct