Compilare: main.cpp: In function 'int main()': main.cpp:7:39: warning: unused variable 'r1' [-Wunused-variable] int ma[101][101],i,j,n,m,p,r,h,ct,r1; ^~ main.cpp:5:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ace.in","r",stdin); ^ main.cpp:6:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ace.out","w",stdout); ^