Compilare: main.cpp: In function 'int main()': main.cpp:90:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < lstLef.size(); ++i) { ~~^~~~~~~~~~~~~~~ main.cpp:91:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i + 1 < lstLef.size() && incl(lstLef[i + 1], lstLef[i])) { ~~~~~~^~~~~~~~~~~~~~~ main.cpp:100:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < lstRig.size(); ++i) { ~~^~~~~~~~~~~~~~~ main.cpp:113:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p1 != lstLef.size() + 1) ~~~^~~~~~~~~~~~~~~~~~~~ main.cpp:115:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p2 != lstRig.size() + 1) ~~~^~~~~~~~~~~~~~~~~~~~ main.cpp:54:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("transform3.in", "r", stdin); ^ main.cpp:55:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("transform3.out", "w", stdout); ^