Submission #565586

#	Time	Username	Problem	Language	Result	Execution time	Memory
565586		birthdaycake	Xylophone (JOI18_xylophone)	C++17	Compilation error	0 ms	0 KiB

xylophone

#include<bits/stdc++.h>
#include "xylophone.h"

int A[5001][5001];
int ans[5001];


void solve(int N) {
    
    for(int i = 1; i <= N; i++) ans[i] = 0;
    
    
    
    for(int i = 1; i <= N; i++){
        for(int j = i + 1; j <= N; j++){
            int value = query(i,j);
            A[i][j] = value;
            A[j][i] = value;
        }
    }
    
    int j = 0;
    for(int i = 1; i <= N; i++){
        set<int>x;
        for(int j = 1; j <= N; j++){
            x.insert(A[i][j]);
        }
        if(x.size() == n){
            ans[i] = N;
            j = i;
            break;
        }
    }
    
    
    for(int i = 1; i <= N; i++){
        if(i != j) {
            ans[i] = abs(N - ans[i][j]);
        }
        
    }
	for(int i = 1; i <= N; i++) {
		answer(i, ans[i]);
	}

    
    
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:24:9: error: 'set' was not declared in this scope
   24 |         set<int>x;
      |         ^~~
xylophone.cpp:24:9: note: suggested alternatives:
In file included from /usr/include/c++/10/set:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:87,
                 from xylophone.cpp:1:
/usr/include/c++/10/bits/stl_set.h:94:11: note:   'std::set'
   94 |     class set
      |           ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:87,
                 from xylophone.cpp:1:
/usr/include/c++/10/set:78:13: note:   'std::pmr::set'
   78 |       using set = std::set<_Key, _Cmp, polymorphic_allocator<_Key>>;
      |             ^~~
xylophone.cpp:24:13: error: expected primary-expression before 'int'
   24 |         set<int>x;
      |             ^~~
xylophone.cpp:26:13: error: 'x' was not declared in this scope
   26 |             x.insert(A[i][j]);
      |             ^
xylophone.cpp:28:12: error: 'x' was not declared in this scope
   28 |         if(x.size() == n){
      |            ^
xylophone.cpp:28:24: error: 'n' was not declared in this scope
   28 |         if(x.size() == n){
      |                        ^
xylophone.cpp:38:36: error: invalid types 'int[int]' for array subscript
   38 |             ans[i] = abs(N - ans[i][j]);
      |                                    ^