Submission #1084502

#	Time	Username	Problem	Language	Result	Execution time	Memory
1084502		thangdz2k7	Soccer Stadium (IOI23_soccer)	C++17	0 / 100	1 ms	436 KiB

soccer

// author : thembululquaUwU
// 3.9.2024

#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define endl '\n'

using namespace std;
using ll = long long;
using ii = pair <int, int>;
using vi = vector <int>;

const int MaxN = 2e5;
const int mod = 1e9 + 7;

void maxl(auto &a, auto b) {a = max(a, b);}
void minl(auto &a, auto b) {a = min(a, b);}

int biggest_stadium(int n, vector <vi> f){
    if (n > 30){
        int ans = 0;
        vi l(n, -1), r(n, -1);
        int st = -1, ed = n;
        for (int i = 0; i < n; ++ i){
            bool have = false;
            for (int j = 0; j < n; ++ j) if (!f[i][j]){
                if (l[i] == -1) l[i] = j;
                r[i] = j; ++ ans; have = true;
                if (st == -1) st = i; if (i > ed) return 0;
            }
            if (!have) ed = i;
        }
        for (int i = st; i < ed; ++ i){
            for (int j = i + 1; j < ed; ++ j){
                if (l[i] <= l[j] && r[j] <= r[i]) continue;
                if (l[j] <= l[i] && r[i] <= r[j]) continue;
                return 0;
            }
        }
        return ans;
    }
}

Compilation message (stderr)

soccer.cpp:18:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | void maxl(auto &a, auto b) {a = max(a, b);}
      |           ^~~~
soccer.cpp:18:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | void maxl(auto &a, auto b) {a = max(a, b);}
      |                    ^~~~
soccer.cpp:19:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void minl(auto &a, auto b) {a = min(a, b);}
      |           ^~~~
soccer.cpp:19:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void minl(auto &a, auto b) {a = min(a, b);}
      |                    ^~~~
soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:31:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   31 |                 if (st == -1) st = i; if (i > ed) return 0;
      |                 ^~
soccer.cpp:31:39: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   31 |                 if (st == -1) st = i; if (i > ed) return 0;
      |                                       ^~
soccer.cpp:44:1: warning: control reaches end of non-void function [-Wreturn-type]
   44 | }
      | ^

• Subtask 0: 0 / 0
• Subtask 1: 0 / 6
• Subtask 2: 0 / 8
• Subtask 3: 0 / 22
• Subtask 4: 0 / 18
• Subtask 5: 0 / 16
• Subtask 6: 0 / 30