Compilare: main.cpp: In function 'int main()': main.cpp:24:31: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'int' [-Wformat=] scanf("%d",v[i][j]); ^ main.cpp:27:24: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if((1<<j)&i!=0) ~^~~ main.cpp:19:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("flip.in","r",stdin); ^ main.cpp:20:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("flip.out","w",stdout); ^ main.cpp:21:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:24:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",v[i][j]); ^