oj.uz

Submission #683529

# Submission time Handle Problem Language Result Execution time Memory
683529 2023-01-18T16:29:17 Z Ronin13 Chessboard (IZhO18_chessboard) C++14
47 / 100
 135 ms 3376 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define f first
#define s second
#define pii pair<ll,ll>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
using namespace std;
/*
6 8
3 3 3 3
1 2 1 2
3 4 3 4
5 5 5 5
4 3 4 3
4 4 4 4
2 1 2 1
3 6 3 6
*/

int pos[100001][2];

ll compute_line(ll x1, ll y1, ll x2, ll y2, ll k){
    ll u = (x1 / k + y1 / k);
    ll v = (x2 / k + y2 / k);
    ll a = (x2 - x1 + 1);
    ll b = (y2 - y1 + 1);
    ll cnt = 0;
    if(u % 2 == v % 2){
        if(u & 1){
            cnt +=  k * a;
        }
        else cnt -= k * a;
    }
    ll c = k - (y2 % k);
    if(u & 1){
        cnt -= c * a;
    }
    else cnt += c * a;
    ll d = y1 % k;
    d++;
    if(v & 1) cnt -= d * a;
    else cnt += d * a;
    return cnt;
}

ll C(ll x1, ll y1, ll x2, ll y2, ll k){

            ll x = (x1 / k) + (y1 / k);
            if(x & 1) return -1;
            return 1;

    if((x1 / k) == (x2 / k)){
        if((y1 / k) == (y2 / k)){
            ll x = (x1 / k) + (y1 / k);
            if(x % 2) return 0-(x2 - x1 + 1) * (y2 - y1 + 1);
            return (x2 - x1 + 1) * (y2 - y1 + 1);
        }
        return compute_line(x1, y1, x2, y2, k);
    }
    if(y1 / k == y2 / k)
        return compute_line(y1, x2, y2, x2, k);
    ll cnt = 0;
    cnt += compute_line(x1, y1, x1 / k * k + (k - 1), y2, k);
    cnt += compute_line(x2 / k * k, y1, x2, y2, k);
    ll v = x2 / k;
    v -= x1 / k;
    v--;
    if(v){
        ll j = x1 / k * k + k;
        ll nw = compute_line(j, y1, j + k, y2, k);
        if(v & 1) cnt += nw;
    }
    return cnt;
}

int main(){
  //  freopen("school.in", "r", stdin);
 // freopen("school.out", "w", stdout);
    ll n, k;
    cin >> n >> k;
    ll x1[k + 1], x2[k + 1], y1[k + 1], y2[k + 1];
    for(int i =  1; i <= k; ++i){
        cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
        x1[i]--;
        y1[i]--;
        x2[i]--;
        y2[i]--;
    }
    ll ans = 1e18 + 1;
    for(int a = 1; a <n; a++){
        if(n % a) continue;
        ll v = n / a;
        ll cnt = 0;
        if(v % 2 == 1)
            cnt += v * (v / 2) + (v + 1)  / 2;
        else cnt = v * v / 2;
        cnt *= a * a;
        for(int i = 1; i <= k; i++){
            cnt -= C(x1[i], y1[i], x2[i], y2[i], a);
        }
        ans = min(ans, cnt);
    }
    for(ll a = 1; a <n; a++){
        if(n % a) continue;
        ll v = n / a;
        ll cnt = -1;
        if(v % 2 == 1)
            cnt += v * (v / 2) + (v + 1) / 2;
        else cnt = v * v / 2;
        cnt *= a * a;
        for(int i = 1; i <= k; i++)
            cnt += C(x1[i], y1[i], x2[i], y2[i], a);
        ans = min(ans, cnt);
    }
    cout << ans;
    return 0;
}

Compilation message

chessboard.cpp: In function 'long long int compute_line(long long int, long long int, long long int, long long int, long long int)':
chessboard.cpp:29:8: warning: unused variable 'b' [-Wunused-variable]
   29 |     ll b = (y2 - y1 + 1);
      |        ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 2240 KB Output is correct
2 Correct 16 ms 724 KB Output is correct
3 Correct 41 ms 1492 KB Output is correct
4 Correct 40 ms 1712 KB Output is correct
5 Correct 56 ms 2004 KB Output is correct
6 Correct 36 ms 1392 KB Output is correct
7 Correct 8 ms 532 KB Output is correct
8 Correct 36 ms 1364 KB Output is correct
9 Correct 91 ms 3104 KB Output is correct
10 Correct 50 ms 1856 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 25 ms 1168 KB Output is correct
17 Correct 80 ms 2916 KB Output is correct
18 Correct 84 ms 3376 KB Output is correct
19 Correct 119 ms 3048 KB Output is correct
20 Correct 135 ms 3372 KB Output is correct
21 Correct 65 ms 2820 KB Output is correct
22 Correct 2 ms 212 KB Output is correct
23 Correct 41 ms 1620 KB Output is correct
24 Correct 76 ms 3028 KB Output is correct
25 Correct 8 ms 468 KB Output is correct
26 Correct 48 ms 2004 KB Output is correct
27 Correct 59 ms 2388 KB Output is correct
28 Correct 80 ms 3284 KB Output is correct
29 Correct 28 ms 1344 KB Output is correct
30 Correct 3 ms 340 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 2240 KB Output is correct
2 Correct 16 ms 724 KB Output is correct
3 Correct 41 ms 1492 KB Output is correct
4 Correct 40 ms 1712 KB Output is correct
5 Correct 56 ms 2004 KB Output is correct
6 Correct 36 ms 1392 KB Output is correct
7 Correct 8 ms 532 KB Output is correct
8 Correct 36 ms 1364 KB Output is correct
9 Correct 91 ms 3104 KB Output is correct
10 Correct 50 ms 1856 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 25 ms 1168 KB Output is correct
27 Correct 80 ms 2916 KB Output is correct
28 Correct 84 ms 3376 KB Output is correct
29 Correct 119 ms 3048 KB Output is correct
30 Correct 135 ms 3372 KB Output is correct
31 Correct 65 ms 2820 KB Output is correct
32 Correct 2 ms 212 KB Output is correct
33 Correct 41 ms 1620 KB Output is correct
34 Correct 76 ms 3028 KB Output is correct
35 Correct 8 ms 468 KB Output is correct
36 Correct 48 ms 2004 KB Output is correct
37 Correct 59 ms 2388 KB Output is correct
38 Correct 80 ms 3284 KB Output is correct
39 Correct 28 ms 1344 KB Output is correct
40 Correct 3 ms 340 KB Output is correct
41 Incorrect 127 ms 2888 KB Output isn't correct
42 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 65 ms 2240 KB Output is correct
10 Correct 16 ms 724 KB Output is correct
11 Correct 41 ms 1492 KB Output is correct
12 Correct 40 ms 1712 KB Output is correct
13 Correct 56 ms 2004 KB Output is correct
14 Correct 36 ms 1392 KB Output is correct
15 Correct 8 ms 532 KB Output is correct
16 Correct 36 ms 1364 KB Output is correct
17 Correct 91 ms 3104 KB Output is correct
18 Correct 50 ms 1856 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 25 ms 1168 KB Output is correct
35 Correct 80 ms 2916 KB Output is correct
36 Correct 84 ms 3376 KB Output is correct
37 Correct 119 ms 3048 KB Output is correct
38 Correct 135 ms 3372 KB Output is correct
39 Correct 65 ms 2820 KB Output is correct
40 Correct 2 ms 212 KB Output is correct
41 Correct 41 ms 1620 KB Output is correct
42 Correct 76 ms 3028 KB Output is correct
43 Correct 8 ms 468 KB Output is correct
44 Correct 48 ms 2004 KB Output is correct
45 Correct 59 ms 2388 KB Output is correct
46 Correct 80 ms 3284 KB Output is correct
47 Correct 28 ms 1344 KB Output is correct
48 Correct 3 ms 340 KB Output is correct
49 Incorrect 127 ms 2888 KB Output isn't correct
50 Halted 0 ms 0 KB -