Compilare: main.cpp: In function 'int cercuri(int)': main.cpp:57:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<d[n].size();i++) ~^~~~~~~~~~~~ main.cpp:60:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1;j<d[n].size();j++) ~^~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:18:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ main.cpp:20:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d\n", &a[i].x, &a[i].y, &a[i].r); ^ main.cpp: In function 'int main()': main.cpp:83:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cerc3.in", "r", stdin); ^ main.cpp:84:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cerc3.out", "w", stdout); ^