Compilare: user.cpp: In function ‘int main()’: user.cpp:20:48: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] d[i&1][j]=(d[i&1][j-1]+d[1-i&1][i]-d[1-i&1][j-1]+MOD)%MOD; ^ user.cpp:20:60: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] d[i&1][j]=(d[i&1][j-1]+d[1-i&1][i]-d[1-i&1][j-1]+MOD)%MOD; ^ user.cpp:22:48: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] d[i&1][j]=(d[i&1][j-1]+d[1-i&1][j-1])%MOD; ^ user.cpp:25:20: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] d[1-i&1][j]=0; ^ user.cpp:27:33: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] fprintf(fout,"%d\n" ,d[1-n&1][n]); ^ user.cpp:11:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&t); ^ user.cpp:14:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&n); ^ user.cpp:17:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%c" ,&a); ^