meetings.cpp: In function 'void findpath(std::vector<int>)':
meetings.cpp:8:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | #define f(i,a,b) for(int i=a;i<b;i++)
......
38 | f(i,2,p.size()){
| ~~~~~~~~~~~~
meetings.cpp:38:2: note: in expansion of macro 'f'
38 | f(i,2,p.size()){
| ^
meetings.cpp:8:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | #define f(i,a,b) for(int i=a;i<b;i++)
......
53 | f(i,0,res.size()){
| ~~~~~~~~~~~~~~
meetings.cpp:53:3: note: in expansion of macro 'f'
53 | f(i,0,res.size()){
| ^
meetings.cpp:57:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
57 | if(r==res.size()) pes.pb(u);
| ~^~~~~~~~~~~~
meetings.cpp:40:7: warning: variable 'l' set but not used [-Wunused-but-set-variable]
40 | int l,r;
| ^
meetings.cpp:8:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | #define f(i,a,b) for(int i=a;i<b;i++)
......
60 | f(i,1,res.size()){
| ~~~~~~~~~~~~~~
meetings.cpp:60:2: note: in expansion of macro 'f'
60 | f(i,1,res.size()){
| ^
meetings.cpp: In function 'void solve(std::vector<int>)':
meetings.cpp:8:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | #define f(i,a,b) for(int i=a;i<b;i++)
......
79 | f(i,0,e.size()){
| ~~~~~~~~~~~~
meetings.cpp:79:2: note: in expansion of macro 'f'
79 | f(i,0,e.size()){
| ^
meetings.cpp:81:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
81 | if(i==e.size()-1 || e[i].F!=e[i+1].F){
| ~^~~~~~~~~~~~
/usr/bin/ld: /tmp/ccMBBmut.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cclJct5u.o:meetings.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status