Compilare: main.cpp: In function 'int main()': main.cpp:7:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fsb.in","r",stdin); ^ main.cpp:8:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fsb.out","w",stdout); ^ main.cpp:10:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:13:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%1d",&x); ^ main.cpp:21:21: warning: iteration 400005 invokes undefined behavior [-Waggressive-loop-optimizations] cnt=cnt+(f[i]*(f[i]-1))/2; //combinari de f[i] luate cate 2 ~~~^ main.cpp:20:14: note: within this loop for(i=0;i<=LIM;i++) ~^~~~~