Compilare: main.cpp: In function 'int main()': main.cpp:42:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0,l=0; j<g[i].size(); j++){ ~^~~~~~~~~~~~ main.cpp:45:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l<vreau[i].size() && vreau[i][l]==x){ ~^~~~~~~~~~~~~~~~ main.cpp:50:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l<vreau[i].size() && vreau[i][l]<x){ ~^~~~~~~~~~~~~~~~ main.cpp:58:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if((l<vreau[i].size() && x<vreau[i][l]) || vreau[i].size()==0){ ~^~~~~~~~~~~~~~~~ main.cpp:70:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(l<vreau[i].size()){ ~^~~~~~~~~~~~~~~~ main.cpp:87:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<vreau[i].size(); j++){ ~^~~~~~~~~~~~~~~~ main.cpp:98:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(it->grad==s.size()-1){ ~~~~~~~~^~~~~~~~~~~~ main.cpp:102:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<vreau[i].size(); j++){ ~^~~~~~~~~~~~~~~~ main.cpp:26:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("incurcatura.in", "r", stdin); ^ main.cpp:27:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("incurcatura.out", "w", stdout); ^ main.cpp:29:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &p, &n); ^ main.cpp:32:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ main.cpp:34:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^