nicegift.cpp: In function 'int main()':
nicegift.cpp:21:22: warning: comparison of integer expressions of different signedness: 'std::multiset<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
21 | if( se.size() < k ){
| ~~~~~~~~~~^~~
nicegift.cpp:40:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | for( int j = 0 ; j < z.size() ; j ++ ) se.insert( z[ j ] ) ;
| ~~^~~~~~~~~~
nicegift.cpp:45:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
45 | for( int j = 0 ; j < v.size() ; j ++ ){
| ~~^~~~~~~~~~
nicegift.cpp:46:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
46 | for( int i = 0; i < v[ j ].size() ; i ++ ) cout << v[ j ][ i ] << " " ; cout << '\n' ; }
| ~~^~~~~~~~~~~~~~~
nicegift.cpp:46:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
46 | for( int i = 0; i < v[ j ].size() ; i ++ ) cout << v[ j ][ i ] << " " ; cout << '\n' ; }
| ^~~
nicegift.cpp:46:79: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
46 | for( int i = 0; i < v[ j ].size() ; i ++ ) cout << v[ j ][ i ] << " " ; cout << '\n' ; }
| ^~~~