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Submission #341419

# Submission time Handle Problem Language Result Execution time Memory
341419 2020-12-29T16:19:22 Z ivan_tudor Chessboard (IZhO18_chessboard) C++14
70 / 100
 1825 ms 28392 KB 
#include<bits/stdc++.h>
using namespace std;
const long long N = 1e5 + 5;
struct eventhelp{
  long long t;
  long long l, r;
  long long val;
  long long type;
};
void add_int(long long l, long long r, long long val, long long &cnti, long long &cntp){
  long long pare, impare;
  long long dst = r - l + 1;
  pare = dst/2;
  impare = dst/2;
  if(dst%2 == 1){
    if(l%2 == 0)
      pare++;
    else
      impare++;
  }
  cnti += 1LL * impare * val;
  cntp += 1LL * pare * val;
}
vector<eventhelp> ev;
long long ans = LLONG_MAX;
long long n;
bool cmpev(eventhelp a, eventhelp b){
  if(a.t == b.t)
    return a.type > b.type;
  return a.t < b.t;
}
long long imp[N], pr[N];
void solve(long long len){
  vector<eventhelp> evc = ev;
  for(long long i=len; i<=n;i+=len){
    evc.push_back({i, 0, 0, 0});
  }
  inplace_merge(evc.begin(), evc.begin() + ev.size(), evc.end(), cmpev);
  long long sumi = 0, acti = 0, sump = 0, actp = 0;
  for(auto e:evc){
    if(e.type != 0){
      long long fgroup = (e.l - 1)/len + 1;
      long long lgroup = (e.r - 1)/len + 1;
      if(fgroup  + 1 <= lgroup - 1){
        add_int(fgroup, lgroup, 1LL* e.val * len, sumi, sump);
        add_int(fgroup, lgroup, 1LL* e.type * len, acti, actp);
      }
      if(fgroup != lgroup){
        add_int(fgroup, fgroup, 1LL * e.val * (fgroup*len - e.l + 1), sumi, sump);
        add_int(fgroup, fgroup, 1LL * e.type * (fgroup*len - e.l + 1), acti, actp);

        add_int(lgroup, lgroup, 1LL * e.val * (e.r - (lgroup - 1)*len), sumi, sump);
        add_int(lgroup, lgroup, 1LL * e.type * (e.r - (lgroup - 1)*len), acti, actp);
      }
      if(fgroup == lgroup){
        add_int(fgroup, fgroup, 1LL * e.val * (e.r - e.l + 1), sumi, sump);
        add_int(fgroup, fgroup, 1LL * e.type * (e.r - e.l + 1), acti, actp);
      }
    }
    else{
      long long csumi, csump;
      csumi = sumi - acti * (n - e.t);
      csump = sump - actp * (n - e.t);
      imp[e.t/len] = csumi;
      pr[e.t/len] =csump;

    }
  }
  long long fans = 0, sans = 0;
  for(long long i = 1; i<=n/len;i++){
    long long ci, cp;
    ci = imp[i] - imp[i-1];
    cp = pr[i] - pr[i -1];
    long long nrp = (n/len)/2, nri = n/len - nrp;
    if(i %2 == 1){
      fans += 1LL*len*len*nri - ci + cp;
      sans += 1LL*len*len*nrp - cp + ci;
    }
    else{
      sans += 1LL*len*len*nri - ci + cp;
      fans += 1LL*len*len*nrp - cp + ci;
    }
  }
  ans = min(ans, sans);
  ans = min(ans, fans);
}
int main()
{
  //freopen(".in","r",stdin);
  ios::sync_with_stdio(false);
  cin.tie(0),cout.tie(0);
  long long k;
  cin>>n>>k;
  for(long long i=1;i<=k;i++){
    long long x1, y1, x2, y2;
    cin>>x1>>y1>>x2>>y2;
    ev.push_back({x1, y1, y2, n - x1 + 1, 1});
    ev.push_back({x2, y1, y2,-(n - x2), -1});
  }
  sort(ev.begin(), ev.end(), cmpev);
  for(long long d = 1; d<n; d++){
    if(n%d == 0)
      solve(d);
  }
  cout<<ans;
  return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 15188 KB Output is correct
2 Correct 18 ms 4316 KB Output is correct
3 Correct 52 ms 15824 KB Output is correct
4 Correct 46 ms 11220 KB Output is correct
5 Correct 62 ms 13488 KB Output is correct
6 Correct 46 ms 9784 KB Output is correct
7 Correct 12 ms 3364 KB Output is correct
8 Correct 42 ms 9768 KB Output is correct
9 Correct 101 ms 21700 KB Output is correct
10 Correct 56 ms 12244 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 620 KB Output is correct
5 Correct 2 ms 620 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 552 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 620 KB Output is correct
5 Correct 2 ms 620 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 552 KB Output is correct
14 Correct 1 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 32 ms 6896 KB Output is correct
17 Correct 82 ms 20316 KB Output is correct
18 Correct 121 ms 23748 KB Output is correct
19 Correct 403 ms 21304 KB Output is correct
20 Correct 437 ms 23864 KB Output is correct
21 Correct 79 ms 19524 KB Output is correct
22 Correct 1 ms 620 KB Output is correct
23 Correct 77 ms 10456 KB Output is correct
24 Correct 109 ms 21628 KB Output is correct
25 Correct 14 ms 2420 KB Output is correct
26 Correct 68 ms 13780 KB Output is correct
27 Correct 101 ms 16456 KB Output is correct
28 Correct 115 ms 22896 KB Output is correct
29 Correct 39 ms 8280 KB Output is correct
30 Correct 4 ms 1076 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 15188 KB Output is correct
2 Correct 18 ms 4316 KB Output is correct
3 Correct 52 ms 15824 KB Output is correct
4 Correct 46 ms 11220 KB Output is correct
5 Correct 62 ms 13488 KB Output is correct
6 Correct 46 ms 9784 KB Output is correct
7 Correct 12 ms 3364 KB Output is correct
8 Correct 42 ms 9768 KB Output is correct
9 Correct 101 ms 21700 KB Output is correct
10 Correct 56 ms 12244 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 2 ms 620 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 492 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 552 KB Output is correct
24 Correct 1 ms 620 KB Output is correct
25 Correct 2 ms 620 KB Output is correct
26 Correct 32 ms 6896 KB Output is correct
27 Correct 82 ms 20316 KB Output is correct
28 Correct 121 ms 23748 KB Output is correct
29 Correct 403 ms 21304 KB Output is correct
30 Correct 437 ms 23864 KB Output is correct
31 Correct 79 ms 19524 KB Output is correct
32 Correct 1 ms 620 KB Output is correct
33 Correct 77 ms 10456 KB Output is correct
34 Correct 109 ms 21628 KB Output is correct
35 Correct 14 ms 2420 KB Output is correct
36 Correct 68 ms 13780 KB Output is correct
37 Correct 101 ms 16456 KB Output is correct
38 Correct 115 ms 22896 KB Output is correct
39 Correct 39 ms 8280 KB Output is correct
40 Correct 4 ms 1076 KB Output is correct
41 Correct 373 ms 25284 KB Output is correct
42 Correct 137 ms 24480 KB Output is correct
43 Correct 217 ms 24052 KB Output is correct
44 Correct 135 ms 25892 KB Output is correct
45 Correct 114 ms 23656 KB Output is correct
46 Correct 400 ms 27584 KB Output is correct
47 Correct 103 ms 21668 KB Output is correct
48 Correct 178 ms 23520 KB Output is correct
49 Correct 126 ms 22276 KB Output is correct
50 Correct 1691 ms 26228 KB Output is correct
51 Correct 1752 ms 27596 KB Output is correct
52 Correct 1662 ms 26080 KB Output is correct
53 Correct 1768 ms 27552 KB Output is correct
54 Correct 1636 ms 25776 KB Output is correct
55 Correct 1825 ms 28392 KB Output is correct
56 Correct 1610 ms 25168 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 71 ms 15188 KB Output is correct
10 Correct 18 ms 4316 KB Output is correct
11 Correct 52 ms 15824 KB Output is correct
12 Correct 46 ms 11220 KB Output is correct
13 Correct 62 ms 13488 KB Output is correct
14 Correct 46 ms 9784 KB Output is correct
15 Correct 12 ms 3364 KB Output is correct
16 Correct 42 ms 9768 KB Output is correct
17 Correct 101 ms 21700 KB Output is correct
18 Correct 56 ms 12244 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 620 KB Output is correct
23 Correct 2 ms 620 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 2 ms 620 KB Output is correct
26 Correct 2 ms 492 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 492 KB Output is correct
30 Correct 1 ms 492 KB Output is correct
31 Correct 1 ms 552 KB Output is correct
32 Correct 1 ms 620 KB Output is correct
33 Correct 2 ms 620 KB Output is correct
34 Correct 32 ms 6896 KB Output is correct
35 Correct 82 ms 20316 KB Output is correct
36 Correct 121 ms 23748 KB Output is correct
37 Correct 403 ms 21304 KB Output is correct
38 Correct 437 ms 23864 KB Output is correct
39 Correct 79 ms 19524 KB Output is correct
40 Correct 1 ms 620 KB Output is correct
41 Correct 77 ms 10456 KB Output is correct
42 Correct 109 ms 21628 KB Output is correct
43 Correct 14 ms 2420 KB Output is correct
44 Correct 68 ms 13780 KB Output is correct
45 Correct 101 ms 16456 KB Output is correct
46 Correct 115 ms 22896 KB Output is correct
47 Correct 39 ms 8280 KB Output is correct
48 Correct 4 ms 1076 KB Output is correct
49 Correct 373 ms 25284 KB Output is correct
50 Correct 137 ms 24480 KB Output is correct
51 Correct 217 ms 24052 KB Output is correct
52 Correct 135 ms 25892 KB Output is correct
53 Correct 114 ms 23656 KB Output is correct
54 Correct 400 ms 27584 KB Output is correct
55 Correct 103 ms 21668 KB Output is correct
56 Correct 178 ms 23520 KB Output is correct
57 Correct 126 ms 22276 KB Output is correct
58 Correct 1691 ms 26228 KB Output is correct
59 Correct 1752 ms 27596 KB Output is correct
60 Correct 1662 ms 26080 KB Output is correct
61 Correct 1768 ms 27552 KB Output is correct
62 Correct 1636 ms 25776 KB Output is correct
63 Correct 1825 ms 28392 KB Output is correct
64 Correct 1610 ms 25168 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Incorrect 1791 ms 26976 KB Output isn't correct
68 Halted 0 ms 0 KB -