Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[nod].size(); i++ ){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( ctc[i].size() > szmx ) ~~~~~~~~~~~~~~^~~~~~ main.cpp:56:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < ctc[C].size(); i++ ) ~~^~~~~~~~~~~~~~~ main.cpp:71:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < ctc[C].size() && ok == false; i++ ){ ~~^~~~~~~~~~~~~~~ main.cpp:77:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < cycle.size(); j++ ) ~~^~~~~~~~~~~~~~ main.cpp:80:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( cnt == cycle.size() || cnt == 0 ){ ~~~~^~~~~~~~~~~~~~~ main.cpp:81:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( cnt == cycle.size() ) ~~~~^~~~~~~~~~~~~~~ main.cpp:107:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < ctc[C].size() && ok == false; i++ ){ ~~^~~~~~~~~~~~~~~ main.cpp:121:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < edge[nod].size(); j++ ){ ~~^~~~~~~~~~~~~~~~~~ main.cpp:135:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < cycle.size(); i++ ) ~~^~~~~~~~~~~~~~ main.cpp:41:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &n ); m = n * (n - 1) / 2; ^ main.cpp:44:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &x, &y ); ^ main.cpp:60:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &x, &y ); ^