Compilare: user.cpp: In function ‘int get(std::vector<int>&, int)’: user.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:70:61: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] add(dp[i & 1][j][conf][0], dp[1 - i & 1][p][conf][0]); ~~^~~ user.cpp:71:61: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] add(dp[i & 1][j][conf][1], dp[1 - i & 1][p][conf][1]); ~~^~~ user.cpp:75:65: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] add(dp[i & 1][j][conf][1], dp[1 - i & 1][p][conf][0]); ~~^~~ user.cpp:76:65: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] add(dp[i & 1][j][conf][1], dp[1 - i & 1][p][conf - p3[j]][0]); ~~^~~ user.cpp:79:65: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] add(dp[i & 1][j][conf][0], dp[1 - i & 1][p][conf][1]); ~~^~~ user.cpp:80:65: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] add(dp[i & 1][j][conf][0], dp[1 - i & 1][p][conf - p3[j] * 2][1]); ~~^~~ user.cpp:39:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&k); ^ user.cpp:42:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&arr[i]); ^