The error message is as follows:
/judger/run/e9f1df8da21548be9d76e7a59262ca1f/main.cpp:7:5: error: 'int index' redeclared as different kind of symbol
int index = 0;
^
In file included from /usr/include/c++/5/cstring:42:0,
from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:48,
from /judger/run/e9f1df8da21548be9d76e7a59262ca1f/main.cpp:1:
/usr/include/string.h:477:1: note: previous declaration 'const char* index(const char*, int)'
index (const char *__s, int __c) __THROW
^
/judger/run/e9f1df8da21548be9d76e7a59262ca1f/main.cpp: In function 'int main()':
/judger/run/e9f1df8da21548be9d76e7a59262ca1f/main.cpp:19:13: error: 'index1' was not declared in this scope
cout << A[index1] << endl;
^
/judger/run/e9f1df8da21548be9d76e7a59262ca1f/main.cpp:20:8: error: no post-increment operator for type
index++;
^
compilation terminated due to -fmax-errors=3.
Code:
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int maxn = 3e4 + 5;
ll A[maxn], B[maxn], m, n;
int index = 0;
int main() {
cin >> n >> m;
for(int i = 0; i < n; i++) {
cin >> A[i];
}
for(int j = 0; j < m; j++) {
cin >> B[j];
}
for(int k = 0; k < m; k++) {
sort(A, A + B[k]);
cout << A[index] << endl;
index++;
}
return 0;
}
Explanation: There is a function in the C++ string called index, and I used the universal header file, including this function, the name conflict! !
Conclusion: Use #include<bits/stdc++.h> with caution