Compilare: user.cpp: In function ‘void lee()’: user.cpp:27:144: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(sol[p.x+dx[k]][p.y+dy[k]]==0 || sol[p.x][p.y]+mat[p.x+dx[k]][p.y+dy[k]]<sol[p.x+dx[k]][p.y+dy[k]] && p.x>=1 && p.y>=1 && p.x<=n && p.y<=n){ ^ user.cpp: In function ‘int main()’: user.cpp:39:11: warning: unused variable ‘minim’ [-Wunused-variable] int S,minim; ^ user.cpp:37:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taxe2.in","r",stdin); ^ user.cpp:38:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taxe2.out","w",stdout); ^ user.cpp:40:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&S,&n); ^ user.cpp:43:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&mat[i][j]); ^