Compilare: user.cpp: In function ‘bool solve(int, int)’: user.cpp:84:25: warning: suggest parentheses around assignment used as truth value [-Wparentheses] return dp[x][y] = 0; ~~~~~~~~~^~~ user.cpp:87:25: warning: suggest parentheses around assignment used as truth value [-Wparentheses] return dp[x][y] = 1; ~~~~~~~~~^~~ user.cpp:111:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses] return dp[x][y] = (check() == cnt); ~~~~~~~~~^~~~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:119:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&t); ^ user.cpp:122:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&n); ^ user.cpp:124:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&x,&y); ^ user.cpp:129:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&m); ^ user.cpp:131:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&x,&y); ^