oj.uz

Submission #168425

# Submission time Handle Problem Language Result Execution time Memory
168425 2019-12-13T04:22:29 Z juggernaut Chessboard (IZhO18_chessboard) C++14
39 / 100
 661 ms 4476 KB 
#include<bits/stdc++.h>
#define int long long int
#define fr first
#define sc second
using namespace std;
int n,k,i,j,x,y,res;
pair<int,int>p[100001];
bool a[1001][1001];
int get(int f,int q){
    int cnt=0;
    for(int i=0;i<n;i++)
    for(int j=0;j<n;j++){
        x=i/f;
        y=j/f;
        if(q){
            if((x+y)%2==0){
                if(a[i][j])cnt++;
            }else{
                if(!a[i][j])cnt++;
            }
        }else{
            if((x+y)%2==0){
                if(!a[i][j])cnt++;
            }else{
                if(a[i][j])cnt++;
            }
        }
    }
    return cnt;
}
int get(int f){
    return min(get(f,0),get(f,1));
}
main(){
    scanf("%lld%lld",&n,&k);
    for(i=0;i<k;i++){
        scanf("%lld%lld%lld%lld",&p[i].fr,&p[i].sc,&p[i].fr,&p[i].sc);
        p[i].fr--;
        p[i].sc--;
        a[p[i].fr][p[i].sc]=1;
    }
    res=get(1);
    for(j=2;j*j<=n;j++){
        if(n%j==0){
            res=min(res,get(j));
            res=min(res,get(n/j));
        }
    }
    printf("%lld",res);
}

Compilation message

chessboard.cpp:34:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
chessboard.cpp: In function 'int main()':
chessboard.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld",&n,&k);
     ~~~~~^~~~~~~~~~~~~~~~~~
chessboard.cpp:37:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld%lld%lld",&p[i].fr,&p[i].sc,&p[i].fr,&p[i].sc);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 4 ms 376 KB Output is correct
3 Correct 3 ms 256 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 376 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 4 ms 380 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 2 ms 376 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 4 ms 380 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 82 ms 2252 KB Output is correct
17 Correct 62 ms 3960 KB Output is correct
18 Correct 118 ms 4472 KB Output is correct
19 Correct 660 ms 4088 KB Output is correct
20 Correct 661 ms 4476 KB Output is correct
21 Correct 65 ms 3964 KB Output is correct
22 Correct 376 ms 1196 KB Output is correct
23 Correct 186 ms 2700 KB Output is correct
24 Correct 116 ms 4224 KB Output is correct
25 Correct 169 ms 1628 KB Output is correct
26 Correct 94 ms 3064 KB Output is correct
27 Correct 146 ms 3548 KB Output is correct
28 Correct 111 ms 4344 KB Output is correct
29 Correct 40 ms 2428 KB Output is correct
30 Correct 75 ms 1528 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 376 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 4 ms 376 KB Output is correct
3 Correct 3 ms 256 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Runtime error 2 ms 376 KB Execution killed with signal 11 (could be triggered by violating memory limits)
10 Halted 0 ms 0 KB -