Compilare: user.cpp: In function ‘int main()’: user.cpp:28:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &q); ^ user.cpp:31:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &m[i][j]); ^ user.cpp:37:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &t, &a, &b); ^ user.cpp: In function ‘int update(int)’: user.cpp:11:17: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow] if((a<i)||(b>j)||(j+l>b+t)||(i-l<a-t)) return INF; ^ user.cpp:11:10: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow] if((a<i)||(b>j)||(j+l>b+t)||(i-l<a-t)) return INF; ^ user.cpp: In function ‘int main()’: user.cpp:11:17: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow] if((a<i)||(b>j)||(j+l>b+t)||(i-l<a-t)) return INF; ^ user.cpp:11:10: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow] if((a<i)||(b>j)||(j+l>b+t)||(i-l<a-t)) return INF; ^