oj.uz

Submission #334410

# Submission time Handle Problem Language Result Execution time Memory
334410 2020-12-09T06:12:53 Z juggernaut Chessboard (IZhO18_chessboard) C++14
100 / 100
 289 ms 7404 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,pref_bl[100005],pref_wh[100005];
ll range_bl(ll l,ll r){
    if(l)return pref_bl[r]-pref_bl[l-1];
    return pref_bl[r];
}
ll range_wh(ll l,ll r){
    if(l)return pref_wh[r]-pref_wh[l-1];
    return pref_wh[r];
}
ll calc_wh(ll x,ll y,ll x2,ll y2){
    ll ans=0;
    ans+=range_bl(x,x2)*range_wh(y,y2);
    ans+=range_wh(x,x2)*range_bl(y,y2);
    return ans;
}
ll calc_bl(ll x,ll y,ll x2,ll y2){
    ll ans=0;
    ans+=range_bl(x,x2)*range_bl(y,y2);
    ans+=range_wh(x,x2)*range_wh(y,y2);
    return ans;
}
ll solve(ll side){
    ll sz=n/side;
    ll wh=0,bl=side*side*((sz*sz+1)>>1);
    pref_bl[0]=1;
    pref_wh[0]=0;
    for(ll i=1;i<n;i++)
        pref_wh[i]=pref_wh[i-1]+((i/side)&1),pref_bl[i]=i+1-pref_wh[i];
    for(ll i=0;i<m;i++){
        wh+=calc_wh(rect[i].x,rect[i].y,rect[i].x2,rect[i].y2);
        bl-=calc_bl(rect[i].x,rect[i].y,rect[i].x2,rect[i].y2);
    }
    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:45:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   45 |     scanf("%lld%lld",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
chessboard.cpp:46:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   46 |     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 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

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 4716 KB Output is correct
2 Correct 7 ms 1388 KB Output is correct
3 Correct 18 ms 3692 KB Output is correct
4 Correct 18 ms 2540 KB Output is correct
5 Correct 23 ms 4076 KB Output is correct
6 Correct 15 ms 2796 KB Output is correct
7 Correct 4 ms 1132 KB Output is correct
8 Correct 17 ms 2796 KB Output is correct
9 Correct 37 ms 5228 KB Output is correct
10 Correct 21 ms 3564 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 1 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 364 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 1 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 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 10 ms 1644 KB Output is correct
17 Correct 29 ms 3948 KB Output is correct
18 Correct 35 ms 4332 KB Output is correct
19 Correct 48 ms 4076 KB Output is correct
20 Correct 54 ms 4332 KB Output is correct
21 Correct 37 ms 3820 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 17 ms 2432 KB Output is correct
24 Correct 32 ms 4076 KB Output is correct
25 Correct 4 ms 748 KB Output is correct
26 Correct 21 ms 3052 KB Output is correct
27 Correct 36 ms 3436 KB Output is correct
28 Correct 35 ms 4352 KB Output is correct
29 Correct 12 ms 1900 KB Output is correct
30 Correct 2 ms 512 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 4716 KB Output is correct
2 Correct 7 ms 1388 KB Output is correct
3 Correct 18 ms 3692 KB Output is correct
4 Correct 18 ms 2540 KB Output is correct
5 Correct 23 ms 4076 KB Output is correct
6 Correct 15 ms 2796 KB Output is correct
7 Correct 4 ms 1132 KB Output is correct
8 Correct 17 ms 2796 KB Output is correct
9 Correct 37 ms 5228 KB Output is correct
10 Correct 21 ms 3564 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 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 10 ms 1644 KB Output is correct
27 Correct 29 ms 3948 KB Output is correct
28 Correct 35 ms 4332 KB Output is correct
29 Correct 48 ms 4076 KB Output is correct
30 Correct 54 ms 4332 KB Output is correct
31 Correct 37 ms 3820 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 17 ms 2432 KB Output is correct
34 Correct 32 ms 4076 KB Output is correct
35 Correct 4 ms 748 KB Output is correct
36 Correct 21 ms 3052 KB Output is correct
37 Correct 36 ms 3436 KB Output is correct
38 Correct 35 ms 4352 KB Output is correct
39 Correct 12 ms 1900 KB Output is correct
40 Correct 2 ms 512 KB Output is correct
41 Correct 74 ms 6016 KB Output is correct
42 Correct 43 ms 6308 KB Output is correct
43 Correct 56 ms 5996 KB Output is correct
44 Correct 42 ms 6380 KB Output is correct
45 Correct 42 ms 6520 KB Output is correct
46 Correct 83 ms 6380 KB Output is correct
47 Correct 36 ms 6124 KB Output is correct
48 Correct 47 ms 6124 KB Output is correct
49 Correct 40 ms 6124 KB Output is correct
50 Correct 269 ms 6124 KB Output is correct
51 Correct 283 ms 6252 KB Output is correct
52 Correct 268 ms 6124 KB Output is correct
53 Correct 280 ms 6124 KB Output is correct
54 Correct 264 ms 5996 KB Output is correct
55 Correct 289 ms 6380 KB Output is correct
56 Correct 258 ms 5996 KB Output is correct

Subtask #6
30.0 / 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 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 27 ms 4716 KB Output is correct
10 Correct 7 ms 1388 KB Output is correct
11 Correct 18 ms 3692 KB Output is correct
12 Correct 18 ms 2540 KB Output is correct
13 Correct 23 ms 4076 KB Output is correct
14 Correct 15 ms 2796 KB Output is correct
15 Correct 4 ms 1132 KB Output is correct
16 Correct 17 ms 2796 KB Output is correct
17 Correct 37 ms 5228 KB Output is correct
18 Correct 21 ms 3564 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 1 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 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 10 ms 1644 KB Output is correct
35 Correct 29 ms 3948 KB Output is correct
36 Correct 35 ms 4332 KB Output is correct
37 Correct 48 ms 4076 KB Output is correct
38 Correct 54 ms 4332 KB Output is correct
39 Correct 37 ms 3820 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 17 ms 2432 KB Output is correct
42 Correct 32 ms 4076 KB Output is correct
43 Correct 4 ms 748 KB Output is correct
44 Correct 21 ms 3052 KB Output is correct
45 Correct 36 ms 3436 KB Output is correct
46 Correct 35 ms 4352 KB Output is correct
47 Correct 12 ms 1900 KB Output is correct
48 Correct 2 ms 512 KB Output is correct
49 Correct 74 ms 6016 KB Output is correct
50 Correct 43 ms 6308 KB Output is correct
51 Correct 56 ms 5996 KB Output is correct
52 Correct 42 ms 6380 KB Output is correct
53 Correct 42 ms 6520 KB Output is correct
54 Correct 83 ms 6380 KB Output is correct
55 Correct 36 ms 6124 KB Output is correct
56 Correct 47 ms 6124 KB Output is correct
57 Correct 40 ms 6124 KB Output is correct
58 Correct 269 ms 6124 KB Output is correct
59 Correct 283 ms 6252 KB Output is correct
60 Correct 268 ms 6124 KB Output is correct
61 Correct 280 ms 6124 KB Output is correct
62 Correct 264 ms 5996 KB Output is correct
63 Correct 289 ms 6380 KB Output is correct
64 Correct 258 ms 5996 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Correct 279 ms 6764 KB Output is correct
68 Correct 287 ms 6764 KB Output is correct
69 Correct 241 ms 6124 KB Output is correct
70 Correct 246 ms 6636 KB Output is correct
71 Correct 248 ms 6508 KB Output is correct
72 Correct 243 ms 6508 KB Output is correct
73 Correct 257 ms 6508 KB Output is correct
74 Correct 270 ms 6764 KB Output is correct
75 Correct 249 ms 6636 KB Output is correct
76 Correct 283 ms 7020 KB Output is correct
77 Correct 75 ms 7404 KB Output is correct
78 Correct 42 ms 6764 KB Output is correct
79 Correct 74 ms 6508 KB Output is correct
80 Correct 58 ms 6764 KB Output is correct
81 Correct 55 ms 6380 KB Output is correct
82 Correct 52 ms 7020 KB Output is correct
83 Correct 45 ms 6636 KB Output is correct
84 Correct 186 ms 7276 KB Output is correct
85 Correct 284 ms 7020 KB Output is correct
86 Correct 71 ms 1644 KB Output is correct
87 Correct 71 ms 1644 KB Output is correct
88 Correct 279 ms 7276 KB Output is correct
89 Correct 107 ms 2668 KB Output is correct
90 Correct 70 ms 1660 KB Output is correct