Submission #1054971

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1054971	2024-08-12 13:29:51	voi	T-Covering (eJOI19_covering)	C++17	100 / 100	55 ms	11776 KiB

covering

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#include <bits/stdc++.h>
#define all(s) s.begin(), s.end()
#define lb(s, a) lower_bound(all(s), (a)) - s.begin()
#define ii pair <int, int>
#define fi first
#define se second
using namespace std;
typedef long long ll;
const int ar = 2e5+5;
const ll mod = 1e9+7;
const int oo = 1e9;
int n, m, k;
int dx[] = {-1, 1, 0, 0};
int dy[] = {0, 0, -1, 1};
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    #define task "d"
    if(fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    cin >> m >> n;
    vector <vector <int>> a(m + 1, vector <int> (n + 1, 0));
    vector <vector <bool>> ok(m + 1, vector <bool> (n + 1, 0));
 
 
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Compilation message (stderr)

covering.cpp: In function 'int main()':
covering.cpp:69:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   69 |         if(val.size() < 3 * cnt) cout << "No", exit(0);
      |            ~~~~~~~~~~~^~~~~~~~~
covering.cpp:74:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   74 |         if(val.size() > 3 * cnt) res -= (*min_element(all(val)));
      |            ~~~~~~~~~~~^~~~~~~~~
covering.cpp:25:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
covering.cpp:26:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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