printt("real", (after-before) * 60);
printt("user", buffer.tms_cutime - obuffer.tms_cutime);
printt("sys ", buffer.tms_cstime - obuffer.tms_cstime);
printt("real", (after-before) * 60);
printt("user", buffer.tms_cutime - obuffer.tms_cutime);
printt("sys ", buffer.tms_cstime - obuffer.tms_cstime);