oj.uz

Submission #334381

# Submission time Handle Problem Language Result Execution time Memory
334381 2020-12-09T05:35:36 Z juggernaut Chessboard (IZhO18_chessboard) C++14
70 / 100
 253 ms 3564 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
struct Rect{
    ll x,y,x2,y2;
    void _minus(){
        x--,y--,x2--,y2--;
    }
}rect[100005];
ll n,m;
ll solve(ll side){
    ll sz=n/side;
    ll wh=0,bl=side*side*((sz*sz+1)>>1);
    for(ll i=0;i<m;i++){
        ll block_x=rect[i].x/side;
        ll block_y=rect[i].y/side;
        if((block_x+block_y)&1)wh++;
        else bl--;
    }
    return min(wh+bl,n*n-wh-bl);
}
int main(){
    scanf("%lld%lld",&n,&m);
    for(ll i=0;i<m;i++)scanf("%lld%lld%lld%lld",&rect[i].x,&rect[i].y,&rect[i].x2,&rect[i].y2),rect[i]._minus();
    ll res=solve(1);
    for(ll i=2;i*i<=n;i++)if(n%i==0)res=min(res,min(solve(i),solve(n/i)));
    printf("%lld",res);
}

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:23:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |     scanf("%lld%lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
chessboard.cpp:24:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |     for(ll i=0;i<m;i++)scanf("%lld%lld%lld%lld",&rect[i].x,&rect[i].y,&rect[i].x2,&rect[i].y2),rect[i]._minus();
      |                        ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 0 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 0 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2284 KB Output is correct
2 Correct 7 ms 876 KB Output is correct
3 Correct 16 ms 1516 KB Output is correct
4 Correct 17 ms 1772 KB Output is correct
5 Correct 23 ms 2028 KB Output is correct
6 Correct 14 ms 1388 KB Output is correct
7 Correct 3 ms 492 KB Output is correct
8 Correct 14 ms 1388 KB Output is correct
9 Correct 36 ms 3200 KB Output is correct
10 Correct 20 ms 1900 KB Output is correct

Subtask #3
15.0 / 15.0

# 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 1 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 1 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# 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 1 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 1 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 11 ms 1152 KB Output is correct
17 Correct 29 ms 2924 KB Output is correct
18 Correct 38 ms 3436 KB Output is correct
19 Correct 66 ms 3052 KB Output is correct
20 Correct 75 ms 3436 KB Output is correct
21 Correct 28 ms 2916 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 19 ms 1644 KB Output is correct
24 Correct 34 ms 3180 KB Output is correct
25 Correct 4 ms 620 KB Output is correct
26 Correct 22 ms 2028 KB Output is correct
27 Correct 29 ms 2540 KB Output is correct
28 Correct 35 ms 3308 KB Output is correct
29 Correct 12 ms 1388 KB Output is correct
30 Correct 1 ms 364 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2284 KB Output is correct
2 Correct 7 ms 876 KB Output is correct
3 Correct 16 ms 1516 KB Output is correct
4 Correct 17 ms 1772 KB Output is correct
5 Correct 23 ms 2028 KB Output is correct
6 Correct 14 ms 1388 KB Output is correct
7 Correct 3 ms 492 KB Output is correct
8 Correct 14 ms 1388 KB Output is correct
9 Correct 36 ms 3200 KB Output is correct
10 Correct 20 ms 1900 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 0 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 11 ms 1152 KB Output is correct
27 Correct 29 ms 2924 KB Output is correct
28 Correct 38 ms 3436 KB Output is correct
29 Correct 66 ms 3052 KB Output is correct
30 Correct 75 ms 3436 KB Output is correct
31 Correct 28 ms 2916 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 19 ms 1644 KB Output is correct
34 Correct 34 ms 3180 KB Output is correct
35 Correct 4 ms 620 KB Output is correct
36 Correct 22 ms 2028 KB Output is correct
37 Correct 29 ms 2540 KB Output is correct
38 Correct 35 ms 3308 KB Output is correct
39 Correct 12 ms 1388 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 65 ms 2924 KB Output is correct
42 Correct 39 ms 3308 KB Output is correct
43 Correct 47 ms 2924 KB Output is correct
44 Correct 39 ms 3308 KB Output is correct
45 Correct 38 ms 3436 KB Output is correct
46 Correct 71 ms 3180 KB Output is correct
47 Correct 33 ms 3052 KB Output is correct
48 Correct 43 ms 3052 KB Output is correct
49 Correct 36 ms 2924 KB Output is correct
50 Correct 230 ms 3180 KB Output is correct
51 Correct 247 ms 3432 KB Output is correct
52 Correct 228 ms 3308 KB Output is correct
53 Correct 244 ms 3436 KB Output is correct
54 Correct 227 ms 3232 KB Output is correct
55 Correct 253 ms 3564 KB Output is correct
56 Correct 223 ms 3180 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 0 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 0 ms 364 KB Output is correct
9 Correct 25 ms 2284 KB Output is correct
10 Correct 7 ms 876 KB Output is correct
11 Correct 16 ms 1516 KB Output is correct
12 Correct 17 ms 1772 KB Output is correct
13 Correct 23 ms 2028 KB Output is correct
14 Correct 14 ms 1388 KB Output is correct
15 Correct 3 ms 492 KB Output is correct
16 Correct 14 ms 1388 KB Output is correct
17 Correct 36 ms 3200 KB Output is correct
18 Correct 20 ms 1900 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 0 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 11 ms 1152 KB Output is correct
35 Correct 29 ms 2924 KB Output is correct
36 Correct 38 ms 3436 KB Output is correct
37 Correct 66 ms 3052 KB Output is correct
38 Correct 75 ms 3436 KB Output is correct
39 Correct 28 ms 2916 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 19 ms 1644 KB Output is correct
42 Correct 34 ms 3180 KB Output is correct
43 Correct 4 ms 620 KB Output is correct
44 Correct 22 ms 2028 KB Output is correct
45 Correct 29 ms 2540 KB Output is correct
46 Correct 35 ms 3308 KB Output is correct
47 Correct 12 ms 1388 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 65 ms 2924 KB Output is correct
50 Correct 39 ms 3308 KB Output is correct
51 Correct 47 ms 2924 KB Output is correct
52 Correct 39 ms 3308 KB Output is correct
53 Correct 38 ms 3436 KB Output is correct
54 Correct 71 ms 3180 KB Output is correct
55 Correct 33 ms 3052 KB Output is correct
56 Correct 43 ms 3052 KB Output is correct
57 Correct 36 ms 2924 KB Output is correct
58 Correct 230 ms 3180 KB Output is correct
59 Correct 247 ms 3432 KB Output is correct
60 Correct 228 ms 3308 KB Output is correct
61 Correct 244 ms 3436 KB Output is correct
62 Correct 227 ms 3232 KB Output is correct
63 Correct 253 ms 3564 KB Output is correct
64 Correct 223 ms 3180 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Incorrect 0 ms 364 KB Output isn't correct
67 Halted 0 ms 0 KB -