Submission #683534

#	Time	Username	Problem	Language	Result	Execution time	Memory
683534		Ronin13	Chessboard (IZhO18_chessboard)	C++14	Compilation error	0 ms	0 KiB

chessboard

#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
*/



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

    ll X = (x1 / a);
    ll Y = (y1 / a);
    if((X + Y) & 1) return 1;
    return -1;

}

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++){
            ll X = (x1 / a);
            ll Y = (y1 / a);
            if((X + Y) & 1) cnt++;
            cnt--;
        }
        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++){
            ll X = (x1 / a);
            ll Y = (y1 / a);
            if((X + Y) & 1) cnt--;
            cnt++;
        }
        ans = min(ans, cnt);
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

chessboard.cpp: In function 'int main()':
chessboard.cpp:57:24: error: invalid operands of types 'long long int [(k + 1)]' and 'int' to binary 'operator/'
   57 |             ll X = (x1 / a);
      |                     ~~ ^ ~
      |                     |    |
      |                     |    int
      |                     long long int [(k + 1)]
chessboard.cpp:58:24: error: invalid operands of types 'long long int [(k + 1)]' and 'int' to binary 'operator/'
   58 |             ll Y = (y1 / a);
      |                     ~~ ^ ~
      |                     |    |
      |                     |    int
      |                     long long int [(k + 1)]
chessboard.cpp:73:24: error: invalid operands of types 'long long int [(k + 1)]' and 'long long int' to binary 'operator/'
   73 |             ll X = (x1 / a);
      |                     ~~ ^ ~
      |                     |    |
      |                     |    long long int
      |                     long long int [(k + 1)]
chessboard.cpp:74:24: error: invalid operands of types 'long long int [(k + 1)]' and 'long long int' to binary 'operator/'
   74 |             ll Y = (y1 / a);
      |                     ~~ ^ ~
      |                     |    |
      |                     |    long long int
      |                     long long int [(k + 1)]