Compilare: main.cpp: In function 'int main()': main.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<g[i].size(); j++) ~^~~~~~~~~~~~ main.cpp:71:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<gg[i].size(); j++){ ~^~~~~~~~~~~~~ main.cpp:82:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(it->grad==s.size()-1){ ~~~~~~~~^~~~~~~~~~~~ main.cpp:86:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<gg[i].size(); j++){ ~^~~~~~~~~~~~~ main.cpp:44:21: warning: unused variable 'l' [-Wunused-variable] int p,n,i,j,k,x,l; ^ main.cpp:42:42: 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:43:44: 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:45:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &p, &n); ^ main.cpp:48:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ main.cpp:50:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^