Compilare: user.cpp: In function ‘int main()’: user.cpp:42:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < t[i].size(); ++j) ^ user.cpp:46:28: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] if( !((1<<y-1) & mask) ) ^ user.cpp:47:35: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] dp[y][mask | (1<<y-1)] = min(dp[y][mask | (1<<y-1)], dp[x][mask] + cost[x][y]); ^ user.cpp:47:64: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] dp[y][mask | (1<<y-1)] = min(dp[y][mask | (1<<y-1)], dp[x][mask] + cost[x][y]); ^ user.cpp:27:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&N,&M); ^ user.cpp:32:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d",&x,&y,&c); ^