Submission #982000

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
982000	2024-05-13 17:53:46	vjudge1	Aliens (IOI16_aliens)	C++17	Compilation error	0 ms	0 KiB

aliens

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#include <bits/stdc++.h>
using namespace std;
#define int long long
struct Line { 
    int a, b;
    int idx;
    double x(const auto& rhs) { return 1.0 * (rhs.b - b) / (a - rhs.a); };
    int cal(const auto& x) { return a * x + b; }
}; 
struct CHT {
    Line s[100'000 + 10];
    int st = 1, ed = 0;
    void add(Line nline) {
        while (ed - st + 1 >= 2 && s[ed - 1].x(s[ed]) > s[ed - 1].x(nline)) ed -= 1;
        s[++ed] = nline;
    }
    Line get(int x) {
        while (ed - st + 1 >= 2 && s[st].cal(x) > s[st + 1].cal(x)) st += 1;
        return s[st];
    }
};
int take_photos(int n, int m, int k, vector<int> row, vector<int> column) { 
    using pii = pair<int, int>;
    vector<pii> p(n);
 
 
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Compilation message (stderr)

aliens.cpp:9:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
    9 |     double x(const auto& rhs) { return 1.0 * (rhs.b - b) / (a - rhs.a); };
      |                    ^~~~
aliens.cpp:10:19: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   10 |     int cal(const auto& x) { return a * x + b; }
      |                   ^~~~
aliens.cpp: In function 'long long int take_photos(long long int, long long int, long long int, std::vector<long long int>, std::vector<long long int>)':
aliens.cpp:83:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   83 |         int mid = l + r >> 1;
      |                   ~~^~~
/usr/bin/ld: /tmp/ccfRj7kg.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccvokbph.o:aliens.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccfRj7kg.o: in function `main':
grader.cpp:(.text.startup+0xf0): undefined reference to `take_photos(int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status