Submission #980557

#	Time	Username	Problem	Language	Result	Execution time	Memory
980557		fcmalkcin	Hexagonal Territory (APIO21_hexagon)	C++17	Compilation error	0 ms	0 KiB

hexagon

#include <bits/stdc++.h>
using namespace std;
#define fastio ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define nl "\n"

const int maxn = 2e5+5;
const ll mod = 1e9+7;
#define ll long long

ll mul(ll a, ll n) {
  if (n == 0) return 1;
  ll t= mul(a, n / 2);
  if (n%2==0) return (t*t)%mod;
  else return ((t*t)%mod*a)%mod;
}

int draw_territory(int N, int A, int B, vector<int> D, vector<int> L){
    long long a;
    if(N==3){
        long long length = L[0];
        a = ((length * (length+1))%mod*mul(2, mod - 2)) %mod;
    }
    else{
        int totalsq = 4000*4000;
        int dx[6] = {0, 1, 1, 0, -1, -1};
        int dy[6] = {2, 1 ,-1, -2, -1, 1};
    }
    int ans = a%mod;
    return ans;
}

Compilation message (stderr)

hexagon.cpp:7:7: error: 'll' does not name a type
    7 | const ll mod = 1e9+7;
      |       ^~
hexagon.cpp:7:7: note: the macro 'll' had not yet been defined
hexagon.cpp:8: note: it was later defined here
    8 | #define ll long long
      | 
hexagon.cpp: In function 'long long int mul(long long int, long long int)':
hexagon.cpp:13:28: error: 'mod' was not declared in this scope; did you mean 'modf'?
   13 |   if (n%2==0) return (t*t)%mod;
      |                            ^~~
      |                            modf
hexagon.cpp:14:22: error: 'mod' was not declared in this scope; did you mean 'modf'?
   14 |   else return ((t*t)%mod*a)%mod;
      |                      ^~~
      |                      modf
hexagon.cpp: In function 'int draw_territory(int, int, int, std::vector<int>, std::vector<int>)':
hexagon.cpp:21:36: error: 'mod' was not declared in this scope; did you mean 'modf'?
   21 |         a = ((length * (length+1))%mod*mul(2, mod - 2)) %mod;
      |                                    ^~~
      |                                    modf
hexagon.cpp:24:13: warning: unused variable 'totalsq' [-Wunused-variable]
   24 |         int totalsq = 4000*4000;
      |             ^~~~~~~
hexagon.cpp:25:13: warning: unused variable 'dx' [-Wunused-variable]
   25 |         int dx[6] = {0, 1, 1, 0, -1, -1};
      |             ^~
hexagon.cpp:26:13: warning: unused variable 'dy' [-Wunused-variable]
   26 |         int dy[6] = {2, 1 ,-1, -2, -1, 1};
      |             ^~
hexagon.cpp:28:17: error: 'mod' was not declared in this scope; did you mean 'modf'?
   28 |     int ans = a%mod;
      |                 ^~~
      |                 modf