Compilare: main.cpp: In function 'int main()': main.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s.find('E') == -1 || s.find('W') == -1){ ~~~~~~~~~~~~^~~~~ main.cpp:12:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s.find('E') == -1 || s.find('W') == -1){ ~~~~~~~~~~~~^~~~~ main.cpp:18:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); i++) ~~^~~~~~~~~~ main.cpp:24:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = curr + 1; i < s.size(); i++){ ~~^~~~~~~~~~