Compilare: main.cpp: In function 'int main()': main.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0,l=0; j<g[i].size(); j++){ ~^~~~~~~~~~~~ main.cpp:43:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l<vreau[i].size() && vreau[i][l]==x){ ~^~~~~~~~~~~~~~~~ main.cpp:48:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l<vreau[i].size() && vreau[i][l]<x){ ~^~~~~~~~~~~~~~~~ main.cpp:56:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l<vreau[i].size() && x<vreau[i][l]){ ~^~~~~~~~~~~~~~~~ main.cpp:68:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(l<vreau[i].size()){ ~^~~~~~~~~~~~~~~~ main.cpp:85:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<vreau[i].size(); j++){ ~^~~~~~~~~~~~~~~~ main.cpp:96:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(it->grad==s.size()-1){ ~~~~~~~~^~~~~~~~~~~~ main.cpp:100:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<g[i].size(); j++){ ~^~~~~~~~~~~~ main.cpp:24:42: 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:25:44: 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:27:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &p, &n); ^ main.cpp:30:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ main.cpp:32:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^