Compilare: user.cpp: In function ‘int main()’: user.cpp:40:28: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a[i][x]<max1&&a[i-1][x]==max2||a[i][x-1]==max2) ^ user.cpp:59:29: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((a[i][x]<max1&&a[i-1][x]==max2||a[i][x-1]==max2)&&a[i][x]!=0) ^ user.cpp:8:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drum6.in","r",stdin); ^ user.cpp:9:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drum6.out","w",stdout); ^ user.cpp:10:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:17:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&c); ^