Compilare: user.cpp: In function ‘int main()’: user.cpp:85:26: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(max(vis[1 - tot & 1][i], vis[1 - tot & 1][i + 1]) == 0) { ~~^~~~~ user.cpp:85:47: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(max(vis[1 - tot & 1][i], vis[1 - tot & 1][i + 1]) == 0) { ~~^~~~~ user.cpp:89:22: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(vis[1 - tot & 1][i] && vis[1 - tot & 1][i + 1]) { ~~^~~~~ user.cpp:89:45: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(vis[1 - tot & 1][i] && vis[1 - tot & 1][i + 1]) { ~~^~~~~ user.cpp:90:40: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] cpy(a[tot & 1][i], a[1 - tot & 1][i]); ~~^~~~~ user.cpp:91:40: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] add(a[tot & 1][i], a[1 - tot & 1][i + 1]); ~~^~~~~ user.cpp:95:22: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(vis[1 - tot & 1][i]) { ~~^~~~~ user.cpp:96:40: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] cpy(a[tot & 1][i], a[1 - tot & 1][i]); ~~^~~~~ user.cpp:99:22: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(vis[1 - tot & 1][i + 1]) { ~~^~~~~ user.cpp:100:40: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] cpy(a[tot & 1][i], a[1 - tot & 1][i + 1]); ~~^~~~~ user.cpp:72:9: warning: unused variable ‘lim’ [-Wunused-variable] int lim = k - (n + 1) / 2; ^~~ user.cpp:71:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&k); ^