Compilare: main.cpp: In function 'int main()': main.cpp:32:22: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses] if(j)f[i&1][j]=f[i&1^1][j-1]; ~^~ main.cpp:33:22: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses] else f[i&1][j]=s[i&1^1]; ~^~ main.cpp:21:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nkbiti.in","r",stdin); ^ main.cpp:22:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nkbiti.out","w",stdout); ^