Submission #466725

#	Time	Username	Problem	Language	Result	Execution time	Memory
466725		mtxas	T-Covering (eJOI19_covering)	C++14	0 / 100	2 ms	448 KiB

covering

#include <bits/stdc++.h>

#define ll long long
#define pii pair<int, int>
#define fi first
#define se second
#define pll pair<ll, ll>
#define mii map<int, int>
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define all(a) a.begin(), a.end()
#define sz(x) ((int)x.size())
#define turbo() cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(false)
#define _fre() freopen("input.txt", "r", stdin)
#define _for(a, b, c) for(int (a) = (b); (a) < (c); (a)++)
#define _foreq(a, b, c) for(int (a) = (b); (a) <= (c); (a)++)
#define _forneq(a, b, c) for(int (a) = (b); (a) >= (c); (a)--)
#define _forn(a, b, c) for(int (a) = (b); (a) > (c); (a)--)
using namespace std;
/**********************************************************************************
                                STRUCTS
**********************************************************************************/

/**********************************************************************************
                               VARIABLES
**********************************************************************************/
const int maxk = 1001, inf = 1e9+10;
int r[maxk], c[maxk];
int n, m;
vector<vi> table, val;
int dy[4] = {1, 0, -1, 0};
int dx[4] = {0, 1, 0, -1};
/**********************************************************************************
                               FUNCTIONS
**********************************************************************************/
bool validSpecCell(int r, int c){
    bool valid = 1;
    valid &= (!(r == 1 && (c == 1 || c==m)));
    valid &= (!(r == n && (c==1 || c== m)));
    return valid;
}
/**********************************************************************************
                                 MAIN
**********************************************************************************/
int main(){
    //_fre();
    turbo();
    cin>>n>>m;
    table.resize(n+2, vi(m+2));
    val.resize(n+2, vi(m+2));
    _foreq(i, 1, n)_foreq(j, 1, m) cin>>table[i][j];
    int k; cin>>k;
    _for(i, 0, k) cin>>r[i]>>c[i], r[i]++, c[i]++;
    _for(i, 0, k)
        if(!validSpecCell(r[i], c[i])) {cout<<"No"; return 0;}
    ll ans = 0;
    _for(i, 0, k){
        int rr = r[i], cc = c[i];
        val[rr][cc] = 0;
        int minVal = inf;
        _for(dir, 0, 4){
            int nr = rr + dy[dir], nc = cc + dx[dir];
            val[rr][cc] += table[nr][nc];
            minVal = min(minVal, table[nr][nc]);
        }
        val[rr][cc] -= minVal;
        ans += val[rr][cc];
    }
    cout<<ans;

}

Compilation message (stderr)

covering.cpp: In function 'int main()':
covering.cpp:17:33: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   17 | #define _foreq(a, b, c) for(int (a) = (b); (a) <= (c); (a)++)
      |                                 ^
covering.cpp:52:5: note: in expansion of macro '_foreq'
   52 |     _foreq(i, 1, n)_foreq(j, 1, m) cin>>table[i][j];
      |     ^~~~~~
covering.cpp:17:33: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   17 | #define _foreq(a, b, c) for(int (a) = (b); (a) <= (c); (a)++)
      |                                 ^
covering.cpp:52:20: note: in expansion of macro '_foreq'
   52 |     _foreq(i, 1, n)_foreq(j, 1, m) cin>>table[i][j];
      |                    ^~~~~~
covering.cpp:16:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define _for(a, b, c) for(int (a) = (b); (a) < (c); (a)++)
      |                               ^
covering.cpp:54:5: note: in expansion of macro '_for'
   54 |     _for(i, 0, k) cin>>r[i]>>c[i], r[i]++, c[i]++;
      |     ^~~~
covering.cpp:16:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define _for(a, b, c) for(int (a) = (b); (a) < (c); (a)++)
      |                               ^
covering.cpp:55:5: note: in expansion of macro '_for'
   55 |     _for(i, 0, k)
      |     ^~~~
covering.cpp:16:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define _for(a, b, c) for(int (a) = (b); (a) < (c); (a)++)
      |                               ^
covering.cpp:58:5: note: in expansion of macro '_for'
   58 |     _for(i, 0, k){
      |     ^~~~
covering.cpp:16:31: warning: unnecessary parentheses in declaration of 'dir' [-Wparentheses]
   16 | #define _for(a, b, c) for(int (a) = (b); (a) < (c); (a)++)
      |                               ^
covering.cpp:62:9: note: in expansion of macro '_for'
   62 |         _for(dir, 0, 4){
      |         ^~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 30