sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:34:14: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
34 | if(V.size()<=mid) {
| ~~~~~~~~^~~~~
sorting.cpp:39:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
39 | if(i<V.size() ){
| ~^~~~~~~~~
sorting.cpp:41:19: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'struct std::pair<int, int>'} has no member named 'f'
41 | swap(ind[V[i].f],ind[V[i].s]);
| ^
sorting.cpp:41:31: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'struct std::pair<int, int>'} has no member named 's'
41 | swap(ind[V[i].f],ind[V[i].s]);
| ^
sorting.cpp:42:21: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'struct std::pair<int, int>'} has no member named 'f'
42 | swap(a[ind[V[i].f]],a[ind[V[i].s]]);
| ^
sorting.cpp:42:36: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'struct std::pair<int, int>'} has no member named 's'
42 | swap(a[ind[V[i].f]],a[ind[V[i].s]]);
| ^
sorting.cpp:43:29: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'struct std::pair<int, int>'} has no member named 'f'
43 | ans.push_back({ind[V[i].f],ind[V[i].s]});
| ^
sorting.cpp:43:41: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> >, std::pair<int, int> >::value_type' {aka 'struct std::pair<int, int>'} has no member named 's'
43 | ans.push_back({ind[V[i].f],ind[V[i].s]});
| ^
sorting.cpp:43:44: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(<brace-enclosed initializer list>)'
43 | ans.push_back({ind[V[i].f],ind[V[i].s]});
| ^
In file included from /usr/include/c++/9/vector:67,
from /usr/include/c++/9/queue:61,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:86,
from sorting.cpp:1:
/usr/include/c++/9/bits/stl_vector.h:1184:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
1184 | push_back(const value_type& __x)
| ^~~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1184:35: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const std::pair<int, int>&'}
1184 | push_back(const value_type& __x)
| ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/bits/stl_vector.h:1200:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
1200 | push_back(value_type&& __x)
| ^~~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1200:30: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<std::pair<int, int> >::value_type&&' {aka 'std::pair<int, int>&&'}
1200 | push_back(value_type&& __x)
| ~~~~~~~~~~~~~^~~
sorting.cpp:52:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | for(int i=0;i<ans.size();i++){
| ~^~~~~~~~~~~
sorting.cpp:56:17: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
56 | return ans.size();
| ~~~~~~~~^~
sorting.cpp:4:39: warning: unused parameter 'M' [-Wunused-parameter]
4 | int findSwapPairs(int N, int A[], int M, int x[], int y[], int P[], int Q[]) {
| ~~~~^