railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:8:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < s.size(); i++){
~~^~~~~~~~~~
railroad.cpp:14:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < s.size(); i++){
~~^~~~~~~~~~
railroad.cpp:6:15: warning: unused variable 'tal' [-Wunused-variable]
long long tal = 0;
^~~
railroad.cpp:19:1: warning: no return statement in function returning non-void [-Wreturn-type]
}
^